Solve hard problems where AI meets cybersecurity.
Open roles
Engineering
Platform Engineer
London, UK
The role
Own the core product platform from its external interfaces through the service and data layers. You will build the APIs and SDKs that connect Refractal to customer systems, along with the services, identity controls, and event contracts behind them.
Work directly with the founders and early customers to turn operational security needs into simple, reliable platform interfaces and operator tools.
- Location
- London
- Working arrangement
- In person
- Employment type
- Full-time
What we offer
- Competitive salary, meaningful equity, and a performance-linked bonus.
- Direct influence over the product, architecture, engineering standards, and company direction.
- Real, high-consequence AI deployments rather than purely synthetic environments.
- London-based, in-person work, with UK Skilled Worker visa sponsorship and support for Global Talent applications.
What you'll work on
- Own stable, versioned platform APIs and SDKs, including client interfaces, compatibility rules, documentation, and examples.
- Build FastAPI services for enforcement decisions, evidence, policies, and red-team results.
- Design authentication, sessions, API keys, authorisation, and rigorous multi-tenant isolation.
- Build data and event interfaces, real-time streams, and a tamper-evident audit ledger.
- Create customer onboarding, policy integration, and operator dashboard workflows.
- Own testing and deployment across API compatibility, browser smoke tests, Cloud Run, and Cloud SQL.
What we're looking for
A product-minded platform engineer who makes complex systems clear and predictable and takes ownership from the data model to the customer integration.
- Strong backend experience with HTTP APIs; Python and FastAPI experience is preferred.
- Experience with observability, tracing, relational databases, and database migrations.
- Sound judgement around API design, versioning, SDKs, and compatibility.
- A strong understanding of authentication, authorisation, API keys, and multi-tenant access control.
- Good JavaScript and React skills for building operator-facing product surfaces.
- The ability to work independently and own technically uncertain customer problems.
How to apply
Complete the application form with your CV and tell us about the most interesting thing you have built and shipped, ideally something you owned end to end. Links to live products, open-source work, or technical write-ups are strongly encouraged.
Senior Data Engineer
London, UK
The role
You'll build Refractal's data foundation, including the evidence store that customers' auditors rely on, the analytics behind compliance reporting and the datasets our models are trained on.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £80,000–£135,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Design the data model for our append-only, cryptographically signed evidence store.
- Build the streaming and batch layer that turns ingested activity and detections into queryable data, working with our integrations engineers on schemas.
- Own data quality, retention, residency and deletion controls for regulated customers.
- Build training and evaluation datasets with our data scientists and security engineers.
- Make compliance reporting against the EU AI Act, NIST AI RMF and ISO/IEC 42001 quick to produce from our data.
Success in your first six months
- The evidence store is in production, documented and trusted by customers' auditors.
- Colleagues answer compliance and detection questions from data you own, without ad hoc work.
- Training and evaluation data has clear provenance and separation.
What we're looking for
- 6+ years in data engineering, owning production pipelines.
- Strong Python and SQL, with Postgres plus a warehouse or analytics store such as BigQuery or ClickHouse.
- Experience with streaming (Kafka, Pub/Sub or similar) and orchestration (Airflow, Dagster or similar).
- Data modelling for audit trails, lineage and multi-tenant isolation.
- Security-minded handling of sensitive data.
Nice to have
- Data work in banking, insurance or other regulated industries.
- Experience with UK GDPR and data residency.
How to apply
Complete the application form with your CV and tell us about a production data pipeline you owned end to end.
Senior Data Engineer
Podgorica, Montenegro
The role
You'll build Refractal's data foundation, including the evidence store that customers' auditors rely on, the analytics behind compliance reporting and the datasets our models are trained on.
- Location
- Podgorica, Montenegro
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: €35,000–€80,000 gross per year
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Design the data model for our append-only, cryptographically signed evidence store.
- Build the streaming and batch layer that turns ingested activity and detections into queryable data.
- Own data quality, retention, residency and deletion controls for regulated customers.
- Build training and evaluation datasets with our data scientists and security researchers.
- Make compliance reporting against the EU AI Act, NIST AI RMF and ISO/IEC 42001 quick to produce from our data.
Success in your first six months
- The evidence store is in production, documented and trusted by customers' auditors.
- Colleagues answer compliance and detection questions from data you own, without ad hoc work.
- Training and evaluation data has clear provenance and separation.
What we're looking for
- 6+ years in data engineering, owning production pipelines.
- Strong Python and SQL, with Postgres plus a warehouse or analytics store such as BigQuery or ClickHouse.
- Experience with streaming (Kafka, Pub/Sub or similar) and orchestration (Airflow, Dagster or similar).
- Data modelling for audit trails, lineage and multi-tenant isolation.
- Security-minded handling of sensitive data.
Nice to have
- Google Cloud experience, or data work in regulated industries.
- Montenegrin, Serbian, Bosnian or Croatian.
How to apply
Complete the application form with your CV and tell us about a production data pipeline you owned end to end.
Senior DevOps Engineer
London, UK
The role
You'll own how Refractal is built, released and deployed, including our release pipeline, our cloud infrastructure and the packaging that lets regulated customers run Refractal in their own environments. You'll work alongside our Systems Engineer, who is responsible for the production runtime.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £85,000–£140,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Run and harden our Google Cloud production estate as infrastructure as code.
- Build CI/CD with signed artefacts, supply-chain verification and fast, safe releases.
- Package Refractal for customer-hosted and private-cloud deployments that pass enterprise security reviews.
- Own secrets management, key rotation, environment isolation and on-call observability.
- Automate the security controls and audit evidence behind our own compliance programme.
Success in your first six months
- Releases are automated, signed and easy to roll back.
- Customers can run Refractal in their own environments using packaging you built.
- Our infrastructure is fully codified, monitored and documented.
What we're looking for
- 6+ years in DevOps, SRE or infrastructure engineering, owning production systems.
- Deep experience with Terraform or similar, containers and Kubernetes.
- Strong Google Cloud or AWS experience, including network and IAM design.
- Experience with CI/CD and software supply-chain security, including SBOMs, signing and provenance.
- Python or Go for automation.
Nice to have
- Experience deploying into financial-services or other regulated environments.
- Familiarity with operational-resilience requirements such as DORA.
How to apply
Complete the application form with your CV and tell us about production infrastructure you owned, including how you secured the delivery pipeline.
Senior DevOps Engineer
Podgorica, Montenegro
The role
You'll own the infrastructure that runs Refractal, both in our production environment and in customers' own environments, including our delivery pipeline, deployment tooling and the security controls the product depends on.
- Location
- Podgorica, Montenegro
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: €35,000–€85,000 gross per year
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Run and harden our Google Cloud production estate as infrastructure as code.
- Build CI/CD with signed artefacts, supply-chain verification and fast, safe releases.
- Package Refractal for customer-hosted and private-cloud deployments, including on-premises installations.
- Own secrets management, key rotation, environment isolation and on-call observability.
- Automate the security controls and audit evidence behind our own compliance programme.
Success in your first six months
- Releases are automated, signed and easy to roll back.
- Customers can run Refractal in their own environments using packaging you built.
- Our infrastructure is fully codified, monitored and documented.
What we're looking for
- 6+ years in DevOps, SRE or infrastructure engineering, owning production systems.
- Deep experience with Terraform or similar, containers and Kubernetes.
- Strong Google Cloud or AWS experience, including network and IAM design.
- Experience with CI/CD and software supply-chain security, including SBOMs, signing and provenance.
- Python or Go for automation.
Nice to have
- Experience deploying into on-premises or highly restricted customer environments.
- Montenegrin, Serbian, Bosnian or Croatian.
How to apply
Complete the application form with your CV and tell us about production infrastructure you owned, including how you secured the delivery pipeline.
Senior Platform Engineer (UI/UX and Integrations)
Podgorica, Montenegro
The role
You'll own the parts of the Refractal platform that customers see and connect to: the operator console, and the integrations that link Refractal to customers' AI tools and security stack. You'll work closely with our product designer and set front-end and integration standards in Podgorica with our London team.
- Location
- Podgorica, Montenegro
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: €35,000–€85,000 gross per year
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Build the operator console in React and TypeScript, turning designs into fast, accessible interfaces for security and compliance teams.
- Work with our product designer on workflows for policy authoring, triage, investigations and audit reporting.
- Build and maintain integrations with customers' AI platforms and security tools, including SIEMs, identity providers and observability platforms.
- Design the APIs and SDKs that customers use to connect their agents and tools to Refractal.
- Make integrations reliable through testing, monitoring and clear setup documentation.
Success in your first six months
- Console workflows you built are in customers' hands and measurably easier to use.
- Priority integrations are live, documented and supported.
- The front-end and integration standards you set are in use across the Podgorica team.
What we're looking for
- 6+ years in software engineering, with deep front-end experience in React and TypeScript.
- A strong eye for UI and UX, and experience turning designs into polished, data-heavy interfaces.
- Experience building integrations with third-party APIs, including authentication, rate limits and error handling.
- Working knowledge of a backend language, ideally Python.
- Clear communication with designers, engineers and customers.
Nice to have
- Experience with SIEM, identity or observability platforms such as Splunk, Okta or OpenTelemetry.
- Experience building security or compliance products.
- Montenegrin, Serbian, Bosnian or Croatian.
How to apply
Complete the application form with your CV and a link to a data-heavy interface you built, and tell us about a third-party API integration you built and supported.
Software Engineer
London, UK
The role
You'll connect Refractal to the security systems our customers already use, building the integrations and data pipelines that make their security data usable. You'll work closely with our security engineers and with customers to understand their environments and turn their requirements into reliable software.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £60,000–£115,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Build and maintain integrations with security and observability tools, including platforms such as Splunk.
- Develop pipelines to ingest, validate and transform security data, accounting for inconsistent formats, incomplete records and changing source systems.
- Design clear interfaces between integrations and the wider product, working with platform engineers to keep responsibilities well defined.
- Make integrations reliable in production through testing, monitoring, useful error messages and safe handling of credentials and sensitive data.
- Investigate customer integration issues and turn recurring problems into product improvements, documentation and reusable implementation patterns.
Success in your first six months
- You've shipped and supported priority integrations that customers can use with clear setup guidance.
- The data flows you own handle common failures predictably and make problems straightforward to diagnose.
- You've established reusable patterns that make the next integration easier to build and maintain.
What we're looking for
- Experience building and maintaining software, with a clear approach to testing, debugging and code review.
- Familiarity with data engineering concepts, including ingestion, transformation, data quality and pipeline reliability.
- Experience working with APIs and external systems, including authentication, pagination, rate limits and error handling.
- Ability to investigate unfamiliar systems and turn incomplete requirements into a practical implementation.
- Clear communication and a willingness to own work through deployment and ongoing support.
Nice to have
- Experience integrating with Splunk or other SIEM and observability platforms.
- Familiarity with security telemetry, event schemas or detection workflows.
- Experience with high-volume data processing or customer-facing integration projects.
How to apply
Complete the application form with your CV and tell us about an integration with an external system or third-party API that you built and supported.
Software Engineer (Internal Tools and Services)
Podgorica, Montenegro
The role
You'll build the internal tools and services that keep Refractal running, from the systems our engineering, research and customer teams use every day to the backend services behind the product. The role suits someone who likes ownership, makes practical engineering decisions and wants to improve how a small team works.
- Location
- Podgorica, Montenegro
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: €25,000–€70,000 gross per year
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Build internal tools for our engineering, research and customer-facing teams, such as admin consoles, deployment and support tooling, and data utilities.
- Develop and maintain backend services and APIs behind the product, with clear interfaces and documentation.
- Automate repetitive work across engineering and operations, from testing and release checks to customer onboarding.
- Strengthen reliability and security through testing, code review, monitoring and investigation of production issues.
- Use modern AI software engineering tools thoughtfully, taking responsibility for understanding, reviewing and testing every change you ship.
Success in your first six months
- Internal tools you built are in daily use and save the team measurable time.
- The services you own have useful tests, clear documentation and enough visibility to diagnose problems.
- You've helped the team use AI tools more effectively while keeping code quality high.
What we're looking for
- Experience building and maintaining software, with strong fundamentals in system design, debugging and testing.
- Ability to build clear APIs and work confidently with databases and backend services.
- Familiarity with current AI coding assistants or agents, and judgement about where they help and where their output needs scrutiny.
- A habit of understanding the code you ship, checking assumptions and validating behaviour beyond whether it appears to work.
- Ability to break down ambiguous problems, communicate trade-offs and own the quality of your work.
Nice to have
- Experience building internal platforms, developer tooling or workflow automation.
- Familiarity with security-sensitive systems, access controls or auditability.
- Montenegrin, Serbian, Bosnian or Croatian.
How to apply
Complete the application form with your CV and tell us about the most interesting system you've built, scaled or secured, and how you use AI coding assistants in your work.
Systems Engineer
London, UK
The role
Own the services and infrastructure that keep Refractal secure and reliable in production. You will work across the enforcement runtime, data integrity, tenant isolation, agent tracing, model services, and cloud infrastructure.
Build systems that connect activity across agents, services, and tools, evaluate risk, apply decisions, and preserve the evidence behind them.
- Location
- London
- Working arrangement
- In person
- Employment type
- Full-time
What we offer
- Competitive salary, meaningful equity, and a performance-linked bonus.
- Direct influence over the product, architecture, engineering standards, and company direction.
- A clear path to technical leadership as the engineering team grows.
- London-based, in-person work, with UK Skilled Worker visa sponsorship and support for Global Talent applications.
What you'll work on
- Build and operate a low-latency runtime enforcement pipeline with predictable failure behaviour.
- Own observability and tracing across agent actions, tool calls, model calls, and enforcement decisions.
- Build tamper-evident evidence storage and enforce multi-tenant isolation throughout every data path.
- Create reliable event and streaming services with safe handling for load, retries, backpressure, and disconnections.
- Build infrastructure for red-team jobs, evaluation workloads, and model-serving services.
- Own cloud infrastructure, continuous delivery, secrets, artefact verification, and production trust boundaries.
What we're looking for
A systems engineer who reasons carefully about latency, failure, isolation, integrity, and cost, and uses measurements rather than assumptions.
- Strong experience with backend, distributed, or infrastructure systems; Python experience is preferred.
- Production observability and distributed tracing experience, ideally with OpenTelemetry or similar tooling.
- Experience building responsive services under load with correct timeout, retry, and backpressure behaviour.
- Experience with Postgres, Row-Level Security, migrations, and multi-tenant access-control testing.
- Hands-on experience with containers, cloud infrastructure, continuous delivery, and operational security.
- The ability to work independently and own technically ambiguous production problems.
How to apply
Complete the application form with your CV and tell us about the most interesting system you have built, scaled, or secured. Links to open-source work, technical write-ups, or systems you have designed are strongly encouraged.
Research and security
Security Engineer (AI Red Team)
London, UK
The role
You'll test how deployed AI systems and agents fail under adversarial pressure. You'll run authorised, controlled security assessments, show what each finding means in practice, and work with our engineering and research teams to turn findings into stronger defences and repeatable tests.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £65,000–£125,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Design and execute assessments of AI applications and agents, grounded in realistic attacker goals and clearly defined test scope.
- Test realistic threats such as indirect prompt injection, misuse of connected tools, sensitive data exposure and attempts to cross permission boundaries.
- Build reproducible test cases and small testing tools that demonstrate security impact and distinguish reliable failures from one-off outputs.
- Analyse how model behaviour, application design, identity and permissions combine to create vulnerabilities.
- Document findings, recommend practical mitigations and retest fixes with the engineers responsible for the affected systems.
Success in your first six months
- You've established a repeatable assessment approach that connects realistic adversaries, test scenarios and security outcomes.
- You've produced actionable findings with reproducible evidence and helped validate the resulting fixes.
- You've built a growing set of regression tests that captures recurring failure modes and checks whether fixes hold.
What we're looking for
- Hands-on experience in offensive security, application security testing or adversarial testing of AI systems.
- A solid understanding of web applications, APIs, authentication, authorisation and common security failure modes.
- An understanding of how AI applications use prompts, retrieved information, memory and connected tools, and where trust boundaries arise.
- The ability to write code that automates testing, reproduces findings and inspects application behaviour.
- Good judgement around test scope and sensitive data, and the ability to explain technical findings in terms of practical impact.
Nice to have
- Experience assessing LLM applications, agent workflows or systems that retrieve external content.
- Experience building security evaluation suites or testing proposed mitigations systematically.
- Experience combining application testing with cloud, identity or infrastructure security assessment.
How to apply
Complete the application form with your CV and tell us about your most significant security finding and a time you jailbroke or manipulated an AI system. Links to CVEs, write-ups, talks or tools are welcome.
Security Engineer (Detection & Response)
London, UK
The role
You'll bring hands-on detection and response experience into Refractal's product. Working with our software and research engineers, you'll draw on your experience writing detection rules, using SIEMs and investigating threats to shape what we build.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £60,000–£115,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Translate detection and investigation workflows into product requirements, helping engineers understand what security teams need and why.
- Use your experience with detection rules and SIEMs such as Splunk and Datadog to guide product design and integration priorities.
- Build realistic examples and test cases that capture attacker behaviour, benign activity and common sources of false positives.
- Evaluate product outputs for detection quality, useful context and the effort required for an analyst to reach a decision.
- Work with customers and colleagues to identify gaps, prioritise improvements and check that changes address practical security needs.
Success in your first six months
- You've translated important detection and response needs into clear product requirements and helped deliver improvements.
- You've built representative test cases that help the team assess detection quality and investigation usefulness.
- You've established a feedback loop that brings practitioner experience into engineering and research decisions.
What we're looking for
- Hands-on experience writing and tuning detection rules, with examples of how you assessed whether they worked.
- Practical experience using SIEM platforms, including Splunk or Datadog, to query security data and investigate activity.
- Experience in detection and response, with a clear understanding of analyst workflows, false positives and gaps in security telemetry.
- The ability to explain security problems to software engineers and translate your experience into requirements and test cases.
- An interest in building products and a willingness to challenge assumptions using evidence from practical security work.
Nice to have
- Experience contributing to a security product or working closely with software and research engineers.
- Scripting skills for preparing data, prototyping ideas or creating repeatable security tests.
- An interest in how AI changes attacker behaviour and the security of autonomous agents.
How to apply
Complete the application form with your CV and tell us about a detection you wrote or tuned, and how you tested that it worked.
Senior AI Security Researcher
Podgorica, Montenegro
The role
You'll lead offensive security research against AI agents and the infrastructure around them, and work with our engineers to turn your findings into detections, evaluations and defences in the product.
- Location
- Podgorica, Montenegro
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: €40,000–€95,000 gross per year
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Red-team AI agents across browser, code, enterprise and multi-agent environments.
- Research prompt injection, tool abuse, memory poisoning, identity and data-exfiltration attack chains.
- Build automated attack tooling and reusable evaluation suites that run in CI and for customers.
- Turn findings into detection rules, classifiers and policy controls with our engineers.
- Lead customer assessments and write findings that security leaders can act on.
Success in your first six months
- You've set a research agenda and delivered findings that changed the product.
- A growing regression suite captures the attack techniques you've found.
- Customers have received assessments with clear, reproducible evidence.
What we're looking for
- 6+ years in offensive security, application security, red teaming or vulnerability research.
- A record of original findings, such as CVEs, bug bounties, published research or conference talks.
- Hands-on experience attacking LLM applications or agents, including tool calling, retrieval, memory and permissions.
- Strong Python and a systems language, with a habit of building your own tooling.
- Clear communication of rigorous findings to engineers and executives.
Nice to have
- Working knowledge of MITRE ATLAS or the OWASP Top 10 for LLM applications.
- Montenegrin, Serbian, Bosnian or Croatian.
How to apply
Complete the application form with your CV and tell us about your most significant security finding and a time you jailbroke or manipulated an AI system. Links to CVEs, write-ups, talks or tools are welcome.
Senior Data Scientist
London, UK
The role
You'll own the machine-learning models behind Refractal's detections in production, which decide in milliseconds whether an action is safe, and the analysis that shows how well they perform for each customer.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £85,000–£145,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Train, tune and ship classifiers for prompt injection, data exfiltration, policy violations and other risky AI activity.
- Design low-latency models, including distilled and small models and rules-plus-ML ensembles.
- Analyse production telemetry for drift, blind spots, false-positive cost and new attack patterns.
- Build evaluations and benchmarks for our detection models, and work with security engineers to turn new attacks into training data.
- Turn company policies and regulatory requirements into measurable controls.
Success in your first six months
- Detection models you own are in production, with quality metrics tracked per customer.
- You've reduced false positives or latency measurably without losing detection quality.
- Production data feeds a regular cycle of model improvements.
What we're looking for
- 5+ years in applied ML or data science, with models shipped to production.
- Strong Python, PyTorch or similar, and solid statistics for evaluation.
- Hands-on NLP and LLM work: fine-tuning, embeddings, classification and LLM-as-judge.
- Experience measuring fuzzy problems, including labelling, agreement and drift.
- Clear communication of trade-offs to engineers and customers.
Nice to have
- Experience with adversarial ML, safety or content-moderation models.
- Published work on evaluations or AI security.
How to apply
Complete the application form with your CV and tell us about a model you shipped to production and how you evaluated it.
Senior Data Scientist
Podgorica, Montenegro
The role
You'll own the machine-learning models behind Refractal's detections in production, which decide in milliseconds whether an action is safe, and the analysis that shows how well they perform for each customer.
- Location
- Podgorica, Montenegro
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: €35,000–€85,000 gross per year
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Train, tune and ship classifiers for prompt injection, data exfiltration, policy violations and other risky AI activity.
- Design low-latency models, including distilled and small models and rules-plus-ML ensembles.
- Analyse production telemetry for drift, blind spots, false-positive cost and new attack patterns.
- Build evaluations and benchmarks for our detection models, and work with security researchers to turn new attacks into training data.
- Turn company policies and regulatory requirements into measurable controls.
Success in your first six months
- Detection models you own are in production, with quality metrics tracked per customer.
- You've reduced false positives or latency measurably without losing detection quality.
- Production data feeds a regular cycle of model improvements.
What we're looking for
- 5+ years in applied ML or data science, with models shipped to production.
- Strong Python, PyTorch or similar, and solid statistics for evaluation.
- Hands-on NLP and LLM work: fine-tuning, embeddings, classification and LLM-as-judge.
- Experience measuring fuzzy problems, including labelling, agreement and drift.
- Clear communication of trade-offs to engineers and customers.
Nice to have
- Experience with adversarial ML, safety or content-moderation models.
- Montenegrin, Serbian, Bosnian or Croatian.
How to apply
Complete the application form with your CV and tell us about a model you shipped to production and how you evaluated it.
Customer and sales
Account Executive EMEA
London, UK
The role
You'll build customer relationships and win new business for Refractal across EMEA. You'll manage the full sales cycle for a technically complex cybersecurity product, building a clear business case for each customer and adapting your approach to each market.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £70,000–£130,000 base
- 20% commission on sales
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Develop a focused account strategy across agreed EMEA markets, prioritising organisations with relevant security needs and building opportunities through targeted prospecting and relationship development.
- Lead discovery with security, technical and business stakeholders to understand the problem, its impact, the decision process and what would justify a purchase.
- Work with technical colleagues to shape demonstrations and evaluations around agreed customer outcomes, keeping requirements, responsibilities and next steps clear throughout.
- Manage opportunities through business case development, procurement, negotiation and close, adapting to the stakeholders and purchasing practices involved in each market.
- Assess where regional partners can help reach or support customers, coordinate relevant relationships and maintain accurate opportunity records and forecasts.
Success in your first six months
- You've built a qualified pipeline in agreed markets, with credible customer needs, identified decision-makers and clear next steps for each opportunity.
- You've won new business against agreed commercial targets and can explain what helped customers reach a purchasing decision.
- You've established a repeatable approach to account prioritisation and shared actionable feedback on market differences, customer objections and where partners add value.
What we're looking for
- Experience managing the full sales cycle for technically complex B2B software, with evidence of winning business through consultative selling.
- Ability to engage security and technical stakeholders, learn the product deeply and explain its value accurately.
- Experience navigating buying processes across multiple EMEA markets and adapting your approach to different customer contexts.
- Strong discovery, qualification and negotiation skills, including coordinating several stakeholders through a purchasing decision.
- Disciplined pipeline management and forecasting, with clear communication about progress, risks and the support needed.
Nice to have
- Experience selling cybersecurity products or working with security teams as buyers.
- Experience working with regional channel, referral or other commercial partners.
- Additional language skills relevant to EMEA markets, or familiarity with AI security challenges.
How to apply
Complete the application form with your CV and tell us about your quota attainment over the last two years and the largest deal you closed yourself.
Account Executive USA
Boston, MA · Austin, TX · New York, NY
The role
You'll build customer relationships and win new business for Refractal in the US, owning the full sales cycle for a technically complex cybersecurity product from first conversation to signed agreement.
- Location
- Boston, MA; Austin, TX; or New York, NY
- Working arrangement
- Hybrid, with travel
- Employment type
- Full-time
What we offer
- Salary: $130,000–$190,000 base
- 20% commission on sales
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Develop a US account strategy, prioritising organisations with relevant security needs and creating opportunities through targeted outbound activity and relationships.
- Lead discovery with security, technical and business stakeholders, identifying the operational impact of their challenges and the conditions required for a purchasing decision.
- Partner with technical colleagues on demonstrations and evaluations, agreeing useful success criteria with customers and keeping the work connected to an active buying process.
- Build customer champions and business cases, coordinating budget owners, procurement, legal and other stakeholders to move opportunities through negotiation and close.
- Maintain clear opportunity records and reliable forecasts, and bring specific customer feedback to colleagues to improve positioning, qualification and the sales process.
Success in your first six months
- You've built a qualified US pipeline with clear customer problems, identified stakeholders and realistic plans for progressing each opportunity.
- You've won new business against agreed commercial targets and can explain what helped customers reach a purchasing decision.
- You've developed a repeatable approach to reaching relevant accounts and shared useful evidence about US buying dynamics, objections and competitive alternatives.
What we're looking for
- Experience managing the full sales cycle for technically complex B2B software, with evidence of winning business through consultative selling.
- Experience selling to US organisations and navigating the stakeholders, budget decisions and procurement steps involved in a complex purchase.
- Ability to engage security and technical stakeholders, learn the product deeply and communicate its capabilities and limitations accurately.
- Strong prospecting, discovery and negotiation skills, with the persistence and judgement to move opportunities forward.
- Disciplined pipeline management and forecasting, plus a collaborative approach to working with technical and commercial colleagues.
Nice to have
- Experience selling cybersecurity products or working with security teams as buyers.
- Experience developing account strategies and sales practices in an early-stage company.
- Familiarity with AI security challenges, or experience selling to organisations with demanding security requirements.
How to apply
Complete the application form with your CV and tell us about your quota attainment over the last two years and the largest deal you closed yourself.
Senior Enterprise Account Executive
Boston, MA · Austin, TX · New York, NY
The role
You'll build pipeline and close six-figure enterprise deals for Refractal in the US, working with the founders to refine how we sell. You can be based in Boston, Austin or New York.
- Location
- Boston, MA; Austin, TX; or New York, NY
- Working arrangement
- Hybrid, with travel
- Employment type
- Full-time
What we offer
- Salary: $140,000–$190,000 base
- 20% commission on sales
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Own the full sales cycle for US enterprise accounts, from first meeting to signature.
- Sell to CISOs, security leaders, and risk and compliance executives.
- Build and close partnerships with managed security service providers that resell or embed Refractal.
- Run evaluations with our Forward Deployed Engineer and turn them into contracts.
- Help refine our ideal customer profile, pricing, proposals and sales process, and lead outbound with our SDR.
Success in your first six months
- You've built a qualified pipeline with identified decision-makers and clear next steps.
- You've won new business against agreed targets and have at least one MSSP partnership in motion.
- What works in your accounts is documented so the rest of the sales team can use it.
What we're looking for
- 7+ years in B2B sales, including 5+ carrying a closing quota and 3+ selling security.
- A record of closing net-new enterprise deals at $100k+ annual contract value.
- Comfort selling a new category, working closely with the founders and our technical team.
- A network among security leaders in financial services or other regulated industries.
- Disciplined qualification using MEDDPICC or similar, and willingness to travel.
Nice to have
- Experience selling for a growing security company.
- Channel or MSSP sales experience.
- A technical background, such as sales engineering.
How to apply
Complete the application form with your CV and tell us about your quota attainment over the last two years and the largest deal you closed yourself.
Senior Forward Deployed Engineer
London, UK
The role
As a Senior Forward Deployed Engineer, you'll lead Refractal deployments at UK and European banks, insurers and enterprises. You'll work inside customers' security, risk and AI teams to get Refractal running in their environments, and feed what you learn back into the product.
- Location
- London
- Working arrangement
- In office, five days a week, with travel to customers
- Employment type
- Full-time
What we offer
- Salary: £100,000–£165,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Lead technical deployments from first integration to production, with clear plans, owners and success criteria.
- Integrate Refractal with customers' AI agents, copilots, models and security tooling.
- Translate customer policies and regulatory requirements into enforceable controls.
- Help managed security service providers deploy Refractal for their own clients.
- Build connectors and reference implementations, and ship fixes into the core product.
Success in your first six months
- You've taken customer deployments into production that customers rely on day to day.
- Recurring deployment work has become reusable connectors, scripts and documentation.
- Product and engineering decisions reflect what you've learned in the field.
What we're looking for
- 6+ years in software engineering, including 2+ in customer-facing roles such as forward deployed, solutions or technical consulting.
- Strong Python, and confidence across APIs, cloud and identity.
- Hands-on experience building with LLMs and AI agents.
- Calm, clear communication with CISOs, risk leaders and engineers.
- Willingness to travel to customer sites across the UK and Europe.
Nice to have
- Experience in financial services or other regulated industries.
- A background in security engineering or at a security product company.
How to apply
Complete the application form with your CV and tell us about a customer deployment you led and what you've built with LLMs or AI agents.
Senior Forward Deployed Engineer
New York, NY
The role
You'll act as technical lead on Refractal's US deals from discovery through evaluation, then work inside customers' security, risk and AI teams to get Refractal into production.
- Location
- New York, NY
- Working arrangement
- Hybrid, with travel to customers
- Employment type
- Full-time
What we offer
- Salary: $170,000–$250,000 base
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Lead technical discovery, demonstrations and evaluations alongside our Account Executives.
- Deploy Refractal into customers' environments and integrate it with their AI agents, models and security tooling.
- Translate customer policies and regulatory requirements into enforceable controls.
- Help managed security service providers deploy Refractal for their own clients.
- Build connectors and reference implementations, and bring US customer patterns back into the roadmap.
Success in your first six months
- Evaluations you led have turned into signed customers.
- Those customers are in production and rely on Refractal day to day.
- Reusable demonstration and deployment assets make the next US deal faster.
What we're looking for
- 6+ years in software engineering, including 2+ in customer-facing roles such as forward deployed, solutions or sales engineering.
- Strong Python, and confidence across APIs, cloud and identity.
- Hands-on experience building with LLMs and AI agents.
- Security experience as a practitioner or at a security vendor.
- Credibility with CISOs and engineers alike, and willingness to travel.
Nice to have
- Experience with US financial services or healthcare customers.
- Pre-sales experience at an early-stage security company.
How to apply
Complete the application form with your CV and tell us about a customer deployment you led and what you've built with LLMs or AI agents.
Senior Forward Deployed Engineer
Podgorica, Montenegro
The role
As a Senior Forward Deployed Engineer, you'll lead Refractal deployments for organisations across Europe, including in the public sector. You'll work inside customers' security, risk and AI teams to get Refractal running in their environments, and feed what you learn back into the product.
- Location
- Podgorica, Montenegro
- Working arrangement
- In office, five days a week, with travel to customers
- Employment type
- Full-time
What we offer
- Salary: €40,000–€95,000 gross per year
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Lead technical deployments from first integration to production, with clear plans, owners and success criteria.
- Integrate Refractal with customers' AI agents, copilots, models and security tooling.
- Translate customer policies and regulatory requirements into enforceable controls.
- Run technical discovery, demonstrations and evaluations with the founders.
- Build connectors and reference implementations, and ship fixes into the core product.
Success in your first six months
- You've taken customer deployments into production that customers rely on day to day.
- Recurring deployment work has become reusable connectors, scripts and documentation.
- Product and engineering decisions reflect what you've learned in the field.
What we're looking for
- 5+ years in software engineering, including 2+ in customer-facing roles such as forward deployed, solutions or technical consulting.
- Strong Python, and confidence across APIs, cloud and identity.
- Hands-on experience building with LLMs and AI agents.
- Calm, clear communication with senior stakeholders and engineers.
- Willingness to travel to customer sites across Europe.
Nice to have
- A background in security or regulated industries.
- Montenegrin, Serbian, Bosnian or Croatian.
How to apply
Complete the application form with your CV and tell us about a customer deployment you led and what you've built with LLMs or AI agents.
Senior Sales Development Representative
New York, NY
The role
You'll generate Refractal's US pipeline by opening conversations with security and risk leaders at US enterprises and managed security service providers. You'll run and improve our outbound process, with a clear path into a closing role.
- Location
- New York, NY
- Working arrangement
- Hybrid
- Employment type
- Full-time
What we offer
- Salary: $70,000–$100,000 base; $100,000–$145,000 on-target earnings
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Research target accounts and partners, and map their buying committees.
- Run multi-channel outbound across calls, email, LinkedIn and events.
- Qualify inbound demo requests and book meetings for our Account Executives and founders.
- Write and test messaging for CISOs, security leaders and compliance executives.
- Improve our outbound playbook and tooling, including sequences, AI-assisted research and CRM hygiene.
Success in your first six months
- A consistent flow of qualified meetings that turn into pipeline.
- Messaging and sequences that are tested, documented and improving.
- A documented, repeatable outbound process the sales team can rely on.
What we're looking for
- 3+ years as an SDR or BDR in B2B software, including 1+ in cybersecurity.
- A consistent record of beating meeting or pipeline targets.
- Confidence cold-calling senior security buyers.
- Quick to learn technical topics, and able to explain AI security risk in plain language.
- Organised CRM habits in HubSpot or Salesforce.
Nice to have
- Enterprise or MSSP prospecting experience.
- Hands-on experience with AI prospecting tools such as Clay or Apollo.
How to apply
Complete the application form with your CV and tell us about your results against meeting or pipeline targets, and how you would open a cold call with a CISO about AI security risk.
Senior Technical Account Manager
London, UK
The role
You'll look after Refractal's UK and European customers once they've signed. You'll lead onboarding, drive adoption and manage each account through renewal and expansion, so customers get clear, measurable value from the product.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £70,000–£120,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Lead onboarding and implementation plans with customers' security, risk and AI teams, alongside our Forward Deployed Engineers.
- Act as the technical point of contact: troubleshoot integrations, manage escalations and coordinate fixes with engineering.
- Track adoption and outcomes, and run regular business reviews with customer stakeholders.
- Own renewals and identify expansion opportunities with our Account Executives.
- Turn customer feedback into clear product requirements, and build the playbooks and documentation behind technical account management.
Success in your first six months
- Your customers are live, use Refractal regularly and can point to the value it delivers.
- Escalations are handled quickly and transparently, with fixes tracked to closure.
- You've built a repeatable onboarding and account-review process the team can scale.
What we're looking for
- 5+ years as a technical account manager, customer success engineer or similar in B2B software, ideally security.
- A solid technical grounding in cloud, APIs, identity and SaaS integrations, with working knowledge of AI agents.
- A record of strong retention and expansion across enterprise accounts.
- Composure with senior stakeholders during escalations.
- Clear written and spoken communication.
Nice to have
- Experience with regulated customers in financial services, healthcare or the public sector.
- Familiarity with the EU AI Act, NIST AI RMF or ISO/IEC 42001.
How to apply
Complete the application form with your CV and tell us about an enterprise account you managed through a difficult moment, such as an escalation or an at-risk renewal.
Senior Technical Account Manager
New York, NY
The role
You'll look after Refractal's US customers once they've signed. You'll lead onboarding, drive adoption and manage each account through renewal and expansion, so customers get clear, measurable value from the product.
- Location
- New York, NY
- Working arrangement
- Hybrid, with travel
- Employment type
- Full-time
What we offer
- Salary: $125,000–$185,000 base
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Lead onboarding and implementation plans with customers' security, risk and AI teams, alongside our Forward Deployed Engineer.
- Act as the technical point of contact: troubleshoot integrations, manage escalations and coordinate fixes with engineering.
- Track adoption and outcomes, and run regular business reviews with customer stakeholders.
- Own renewals and identify expansion opportunities with our Account Executives.
- Turn customer feedback into clear product requirements, and build the playbooks and documentation behind technical account management.
Success in your first six months
- Your customers are live, use Refractal regularly and can point to the value it delivers.
- Escalations are handled quickly and transparently, with fixes tracked to closure.
- You've built a repeatable onboarding and account-review process the team can scale.
What we're looking for
- 5+ years as a technical account manager, customer success engineer or similar in B2B software, ideally security.
- A solid technical grounding in cloud, APIs, identity and SaaS integrations, with working knowledge of AI agents.
- A record of strong retention and expansion across enterprise accounts.
- Composure with senior stakeholders during escalations.
- Clear written and spoken communication.
Nice to have
- Experience with regulated customers in financial services or healthcare.
- Familiarity with AI governance frameworks such as the NIST AI RMF or ISO/IEC 42001.
How to apply
Complete the application form with your CV and tell us about an enterprise account you managed through a difficult moment, such as an escalation or an at-risk renewal.
Solutions Engineer
London, UK
The role
You'll help prospective customers understand where Refractal fits in their security environment and show them its value. You'll lead technical discovery and evaluations, answer integration questions and hand customers over smoothly into deployment, working with our sales, security and engineering teams.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £65,000–£120,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Lead technical discovery to understand customers' security priorities, existing tools, data availability and deployment constraints.
- Deliver product demonstrations tailored to the customer's use cases and the questions they need answered.
- Design and run proofs of value with agreed success criteria, realistic scope and a clear account of the results.
- Assess integration readiness, help troubleshoot evaluation issues and coordinate with engineers when deeper product work is needed.
- Support technical due diligence and handovers, documenting requirements, commitments and open questions while bringing customer feedback into product discussions.
Success in your first six months
- You can independently lead technical discovery and demonstrate Refractal clearly to security and engineering audiences.
- You've helped customers complete focused evaluations that provide evidence for a buying decision.
- You've created reusable demonstration materials and handover guidance that improve the customer experience.
What we're looking for
- Experience explaining technical products to customers or working with external stakeholders to solve technical problems.
- Understanding of security operations and how tools, telemetry and workflows fit together in a customer environment.
- Practical ability to work with APIs, inspect data and write scripts to support demonstrations, integrations and troubleshooting.
- Ability to translate a broad customer problem into testable requirements and communicate the outcome clearly.
- Sound judgement about product capabilities, with the confidence to surface limitations, manage expectations and involve the right colleagues.
Nice to have
- Experience in solutions engineering, technical consulting or customer-facing security delivery.
- Familiarity with SIEM platforms such as Splunk and enterprise security evaluations.
- Experience presenting AI or security technology to both technical and business audiences.
How to apply
Complete the application form with your CV and tell us about a technical evaluation or proof of concept you ran with a customer.
Design and marketing
Senior Content and Marketing Manager
London, UK
The role
You'll lead Refractal's content and marketing, writing about AI security for security, risk and technology leaders and running the programmes that turn that interest into sales pipeline.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £60,000–£105,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Write and publish technical content, including blog posts, research write-ups, guides and white papers on AI threats and AI security.
- Turn customer work and research findings into case studies and launch stories.
- Build sales enablement materials: decks, one-pagers, battle cards and email copy.
- Run campaigns, webinars and events with sales and partners across the UK and Europe.
- Manage our website, LinkedIn presence and newsletter, and measure what drives pipeline.
Success in your first six months
- We publish on a steady cadence, and security buyers read, share and cite our content in sales conversations.
- Sales has current, consistent materials for every stage of the cycle.
- Marketing-sourced pipeline is tracked and growing.
What we're looking for
- 5+ years in content or product marketing at a B2B technology company, ideally in security or developer tools.
- Exceptional writing, with the ability to explain a technical topic clearly without oversimplifying it. Please include two or three samples with your application.
- Comfort working with engineers and researchers to get the details right.
- Experience running campaigns end to end and tying them to pipeline.
- Hands-on experience with HubSpot or similar, and with AI tools in your own workflow.
Nice to have
- A technical or security background.
- An audience you've built through writing or speaking.
How to apply
Complete the application form with your CV and links to two or three pieces you've written on technical topics, and tell us about a campaign you ran end to end.
Senior Content and Marketing Manager
Podgorica, Montenegro
The role
You'll lead content and marketing for Refractal across Europe with our London team, writing about AI security for security, risk and technology leaders and running the programmes that turn that interest into sales pipeline.
- Location
- Podgorica, Montenegro
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: €20,000–€60,000 gross per year
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Write and publish technical content, including blog posts, research write-ups, guides and white papers on AI threats and AI security.
- Turn customer work and research findings into case studies and launch stories.
- Build sales enablement materials: decks, one-pagers, battle cards and email copy.
- Run campaigns, webinars and events with sales and partners across the Western Balkans and Europe.
- Manage our website, LinkedIn presence and newsletter, and measure what drives pipeline.
Success in your first six months
- We publish on a steady cadence, and security buyers read, share and cite our content in sales conversations.
- Sales has current, consistent materials for every stage of the cycle.
- Marketing-sourced pipeline is tracked and growing.
What we're looking for
- 5+ years in content or product marketing at a B2B technology company, ideally in security or developer tools.
- Exceptional writing in English, with the ability to explain a technical topic clearly without oversimplifying it. Please include two or three samples with your application.
- Comfort working with engineers and researchers to get the details right.
- Experience running campaigns end to end and tying them to pipeline.
- Hands-on experience with HubSpot or similar, and with AI tools in your own workflow.
Nice to have
- A technical or security background.
- Montenegrin, Serbian, Bosnian or Croatian.
How to apply
Complete the application form with your CV and links to two or three pieces you've written on technical topics, and tell us about a campaign you ran end to end.
Senior Product Designer
London, UK
The role
You'll lead product design at Refractal, covering the operator console, policy authoring, investigation and audit views, and the design system behind them. Your work will shape how security, risk and compliance teams find and respond to AI threats.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £65,000–£110,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Design core workflows, including policy authoring, real-time triage, investigations and audit reporting.
- Turn dense technical data, such as agent activity, detections and evidence, into clear, fast interfaces.
- Build and maintain our design system in Figma, and work with engineers to ship it in React.
- Run research with security analysts, compliance leads and engineers at customer organisations.
- Shape our brand and website visuals with our content and marketing lead.
Success in your first six months
- Core console workflows have been redesigned, shipped and measurably improved for analysts.
- A design system is in use across the product, with engineers building from it directly.
- Customer research is a regular input to product decisions.
What we're looking for
- 5+ years of product design for B2B or technical products, with a portfolio of shipped work linked in your application.
- Strong interaction and visual design, with expert Figma skills in components, variants and prototyping.
- Experience designing data-heavy tools such as dashboards, consoles, and developer or security products.
- Comfort working directly with engineers, with a good grasp of front-end constraints.
- Confident use of AI tools in your own design workflow.
Nice to have
- Design experience on security, observability or compliance products.
- Front-end prototyping in code.
How to apply
Complete the application form with your CV and a link to your portfolio, and tell us about a complex, data-heavy product you designed.
Senior Product Designer
Podgorica, Montenegro
The role
You'll lead product design at Refractal with our London team, covering the operator console, policy authoring, investigation and audit views, and the design system behind them. Your work will shape how security, risk and compliance teams find and respond to AI threats.
- Location
- Podgorica, Montenegro
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: €25,000–€70,000 gross per year
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Design core workflows, including policy authoring, real-time triage, investigations and audit reporting.
- Turn dense technical data, such as agent activity, detections and evidence, into clear, fast interfaces.
- Build and maintain our design system in Figma, and work with engineers to ship it in React.
- Run research with security analysts, compliance leads and engineers at customer organisations.
- Shape our brand and website visuals with our content and marketing team.
Success in your first six months
- Core console workflows have been redesigned, shipped and measurably improved for analysts.
- A design system is in use across the product, with engineers building from it directly.
- Customer research is a regular input to product decisions.
What we're looking for
- 5+ years of product design for B2B or technical products, with a portfolio of shipped work linked in your application.
- Strong interaction and visual design, with expert Figma skills in components, variants and prototyping.
- Experience designing data-heavy tools such as dashboards, consoles, and developer or security products.
- Comfort working directly with engineers, with a good grasp of front-end constraints.
- Fluent written and spoken English.
Nice to have
- Design experience on security, observability or compliance products.
- Front-end prototyping in code.
- Montenegrin, Serbian, Bosnian or Croatian.
How to apply
Complete the application form with your CV and a link to your portfolio, and tell us about a complex, data-heavy product you designed.
Operations
Founder's Associate
London, UK
The role
You'll work directly with Refractal's founders to turn company priorities into well-run projects, bringing analysis, structure and follow-through to commercial, recruiting and operational work. It's a hands-on role for someone who likes moving between research, decisions and execution.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £45,000–£80,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Scope projects with the founders, define the decision or outcome needed, and establish a practical plan with clear owners, milestones and dependencies.
- Research markets, customers and competitors, combining evidence into concise recommendations that help the team decide where to focus its time and resources.
- Support commercial execution through account research, opportunity analysis and preparation for important conversations, working closely with the people responsible for those relationships.
- Support agreed recruiting priorities through candidate research, hiring materials and process improvements that help colleagues make timely, well-informed hiring decisions.
- Improve operational workflows where there is a clear business need, then document the approach and establish ownership so improvements last beyond the project.
Success in your first six months
- You've delivered a set of agreed priority projects, with clear evidence of the decisions enabled, work completed or time saved.
- You've built trust with the founders and colleagues through sound judgement, useful analysis, reliable follow-through and early communication when priorities or assumptions change.
- You've left behind practical processes and documentation that colleagues can use independently, with clear handovers and no unnecessary administrative burden.
What we're looking for
- Strong analytical judgement: you can frame an ambiguous question, find relevant evidence and explain a practical recommendation.
- Evidence of taking a project from an unclear starting point through to a useful, completed outcome.
- Clear, concise writing and confident communication with people across different functions.
- Strong organisation, attention to detail and discretion when handling sensitive commercial or people information.
- Comfort changing direction while keeping scope, priorities and commitments explicit.
Nice to have
- Experience working in an early-stage company, consulting, investing or another varied, execution-focused environment.
- Familiarity with commercial research, recruiting projects or operational process improvement.
- An interest in cybersecurity, AI and the organisations that depend on secure technology.
How to apply
Complete the application form with your CV and tell us about a project you took from an unclear starting point to a finished outcome.
Operations Lead
London, UK
The role
You'll own the operations that keep Refractal running as it grows across London, Podgorica and the United States. You'll be responsible for finance operations, people operations, legal and compliance administration, and the systems that connect them, so the founders and the team can focus on customers and product. It's a hands-on role for someone who likes building processes and then running them well.
- Location
- London
- Working arrangement
- In office, five days a week
- Employment type
- Full-time
What we offer
- Salary: £55,000–£100,000
- Competitive equity to share in Refractal's growth
- Pension contribution
- Private medical and dental cover
- Visa and relocation support
What you'll do
- Run day-to-day finance operations with our accountants, including invoicing, supplier payments, expenses, payroll inputs, month-end close and the reporting the founders and board rely on.
- Own people operations from offer to first day: contracts, payroll and benefits setup, visa and relocation logistics, equipment and system access, and an onboarding plan that helps new joiners contribute quickly.
- Coordinate legal and compliance administration with our advisers, including contract workflow, company and statutory filings, insurance, and the evidence needed for security certifications and customer due diligence.
- Keep policies, payroll and suppliers consistent across our London, Podgorica and United States teams while meeting local requirements in each country.
- Select, set up and maintain the internal tools and suppliers the company depends on, with clear costs, access and ownership.
- Manage the office, travel and events, including logistics for customer visits, conferences and team gatherings.
Success in your first six months
- Finance, payroll and onboarding run on a predictable schedule, with clear owners and no surprises at month-end.
- New joiners in every location have their contract, equipment, access and first-week plan ready before they start.
- You've documented the core operating processes and taken routine administration off the founders, and colleagues know who owns what and where to find it.
What we're looking for
- Experience running operations at a growing company, ideally an early-stage technology business, with ownership of several functions rather than one.
- Working knowledge of UK finance operations, payroll and employment administration, and the confidence to learn how they work in other countries.
- Strong organisation and attention to detail, with a record of keeping many workstreams moving without dropping commitments.
- Clear, concise writing and confident communication with colleagues, advisers, suppliers and candidates.
- Discretion and sound judgement when handling confidential financial, legal and personal information.
Nice to have
- Experience supporting a company with teams in more than one country, including visas and international payroll.
- Familiarity with security certifications such as Cyber Essentials Plus or ISO 27001, or with supplier onboarding for government and regulated customers.
- Experience with finance and HR platforms such as Xero, Deel or Rippling.
- An interest in cybersecurity, AI and the organisations that depend on secure technology.
How to apply
Complete the application form with your CV and tell us about the operations you've run at a growing company.