Senior Security Researcher

Snyk
Lisbon Office +1 more
On-site

Who this role is best for

Security researchers with offensive security and AI red teaming experience will find this role in Lisbon offers a chance to shape AI security through collaborative, cutting-edge research.

Best fit for

  • Candidates with offensive security and AI red teaming expertise, particularly in adversarial attacks and agent security testing
    — “Research and exploit weaknesses in LLM applications and autonomous agents”
  • Individuals who have built attack tooling and performed exploit validation in prior roles
    — “Build attack tooling, agent harnesses, and reproducible evaluations”
  • Professionals with a background in experimental design and benchmarking security solutions
    — “Evals and benchmarks: Realistic attack scenarios, ground truth, reliable graders, dataset quality, and regression suites”

Things to consider

  • The role requires strong communication to explain findings to both technical and non-technical stakeholders
    — “Clearly communicate complex research findings, risks, and tradeoffs to technical and non-technical stakeholders”

How to stand out

  • Highlight experience with multi-step adversarial attacks and agent security testing in your resume and interview responses
    — “AI red teaming: Prompt injection, jailbreaks, data leakage, tool abuse, and multi-step adversarial attacks”
  • Demonstrate your ability to translate research into actionable recommendations for security strategy
    — “Experience delivering research in a team and translating findings into actionable recommendations”
  • Showcase your skills in building maintainable research tools and working with Python and APIs
    — “Research engineering: Strong Python, APIs, containers, browser automation, and building maintainable research tools”
Pace · Fast PacedCollaboration · HighAutonomy · HighDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • Research and exploit weaknesses in LLM applications and autonomous agents
  • Build attack tooling, agent harnesses, and reproducible evaluations
Typical background
Experience in AI red teamingOffensive securityLLM fundamentals

Skills & requirements

Required

AI Red TeamingOffensive SecurityLLM FundamentalsHarness EngineeringAgent SecurityEvals And BenchmarksExperimental DesignResearch EngineeringFailure AnalysisExploit Validation And Reporting

Stack & domain

AI Red TeamingOffensive SecurityLLM FundamentalsHarness EngineeringAgent SecurityEvals And BenchmarksExperimental DesignResearch EngineeringFailure AnalysisExploit Validation And ReportingCollaborative ResearchWritten And Verbal CommunicationSecurity ResearchAI Security

About the role

Original posting from Snyk via Ashby

UNLEASH AI INNOVATORS, SECURELY

Software is being rewritten in real time. AI agents are starting to write more code than humans do, at a speed no security team has ever had to match, and that single shift is opening up the biggest opportunity our industry has seen in a decade. We're not bracing for it, we're building the company that owns it.

Snyk is building the next generation security platform where security isn't a set of tools people operate. It's a team of security agents working alongside your engineers, finding, fixing, and governing risk at the speed software is now built. These agents work alongside both the company build and the agents they adopt. Security stops being a queue of work waiting for people, and becomes a coordinated workforce companies direct and trust.

Research and exploit weaknesses in LLM applications and autonomous agents. Build attack tooling, agent harnesses, and reproducible evaluations that turn offensive research into measurable improvements in AI security and improve on Snyk’s offensive security product offering.

Looking for candidates with experience in the following areas:

  • AI red teaming: Prompt injection, jailbreaks, data leakage, tool abuse, and multi-step adversarial attacks.
  • Offensive security: Web/API penetration testing, authentication and authorization flaws, business logic attacks, and exploit chaining.
  • LLM fundamentals: Model behavior and limitations, inference, context management, retrieval, and tool calling.
  • Harness engineering: Agent orchestration, tool integrations, state management, sandboxed execution, and reproducible runs.
  • Agent security: Trust boundaries, permissions, memory poisoning, scope enforcement, and guardrail bypass testing.
  • Evals and benchmarks: Realistic attack scenarios, ground truth, reliable graders, dataset quality, and regression suites.
  • Experimental design: Controlled comparisons, repeated trials, attack success rates, precision/recall, and cost/performance measurement.
  • Research engineering: Strong Python, APIs, containers, browser automation, and building maintainable research tools.
  • Failure analysis: Inspecting prompts, traces, and tool outputs to distinguish model, harness, and environment failures.
  • Exploit validation and reporting: Reproducible proofs of concept, demonstrated impact, false-positive analysis, and actionable remediation.

Collaboration and communication:

  • Collaborative research: Experience delivering research in a team and translating findings into actionable recommendations that shape priorities and strategy.
  • Written and verbal communication: Clearly communicate complex research findings, risks, and tradeoffs to technical and non-technical stakeholders.

ABOUT SNYK

Snyk is committed to creating an inclusive and engaging environment where our employees can thrive as we rally behind our common mission to make the digital world a safer place. From Snyk employee resource groups, to global benefits that help our employees prioritize their health, wellness, financial security, and a work/life blend, we aim to support our employees along their entire journeys here at Snyk.

EQUAL EMPLOYMENT OPPORTUNITY

Snyk is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Source: Snyk careers (Ashby)

Similar roles

More roles at Snyk