{"id":3347588,"url":"https://alion.io/job/snyk-senior-security-researcher","title":"Senior Security Researcher","company":{"id":11819,"name":"Snyk","domain":"snyk.io","url":"https://alion.io/company/snyk","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Lisbon, Portugal"],"countries":["PT"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":45000,"max_usd":111000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":9},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Function Calling","optional":false},{"name":"LLM","optional":false},{"name":"Python","optional":false},{"name":"Red Teaming","optional":false},{"name":"Snyk","optional":false}],"status":"live","first_seen_at":"2026-10-27T14:34:08Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-11-02T20:05:42Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"Unleash AI Innovators, Securely\nSoftware 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.\nSnyk 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.\nResearch 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.\nLooking for candidates with experience in the following areas:\nAI red teaming: Prompt injection, jailbreaks, data leakage, tool abuse, and multi-step adversarial attacks.\n\nOffensive security: Web/API penetration testing, authentication and authorization flaws, business logic attacks, and exploit chaining.\n\nLLM fundamentals: Model behavior and limitations, inference, context management, retrieval, and tool calling.\n\nHarness engineering: Agent orchestration, tool integrations, state management, sandboxed execution, and reproducible runs.\n\nAgent security: Trust boundaries, permissions, memory poisoning, scope enforcement, and guardrail bypass testing.\n\nEvals and benchmarks: Realistic attack scenarios, ground truth, reliable graders, dataset quality, and regression suites.\n\nExperimental design: Controlled comparisons, repeated trials, attack success rates, precision/recall, and cost/performance measurement.\n\nResearch engineering: Strong Python, APIs, containers, browser automation, and building maintainable research tools.\n\nFailure analysis: Inspecting prompts, traces, and tool outputs to distinguish model, harness, and environment failures.\n\nExploit validation and reporting: Reproducible proofs of concept, demonstrated impact, false-positive analysis, and actionable remediation.\n\nCollaboration and communication:\nCollaborative research: Experience delivering research in a team and translating findings into actionable recommendations that shape priorities and strategy.\n\nWritten and verbal communication: Clearly communicate complex research findings, risks, and tradeoffs to technical and non-technical stakeholders.\n\nAbout Snyk\nSnyk 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.\nEqual Employment Opportunity\nSnyk is an Equal Opportunity Employer. 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