{"id":2668996,"url":"https://alion.io/job/netflix-senior-software-engineer-5-validation-safety-platform","title":"Senior Software Engineer 5 — Validation & Safety Platform","company":{"id":5888,"name":"Netflix","domain":"netflix.com","url":"https://alion.io/company/netflix","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Eightfold","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":62000,"max_usd":103000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":339},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"CI/CD","optional":false},{"name":"LLM","optional":false},{"name":"LLM Guardrails","optional":false}],"status":"live","first_seen_at":"2026-09-21T00:00:00Z","employer_posted_date":"2026-09-21","last_verified_at":"2026-10-17T12:08:56Z","board_verified":true,"closed_at":null,"days_open":26,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":26},"description":"Netflix is one of the world's leading entertainment services, with over 300 million paid memberships in over 190 countries enjoying TV series, films and games across a wide variety of genres and languages. Members can play, pause and resume watching as much as they want, anytime, anywhere, and can change their plans at any time.\nAbout the team\nThe Validation & Safety Platform is one of three pillars inside the new System Health, Validation & Insights Platform group in Productivity Engineering. Our mandate: catch safety and correctness regressions in human-written or agent-generated code before they reach production.\nNetflix's agent fleet now writes, tests, refactors, and deploys code continuously across every domain. As agent volume grows, the constraint shifts from producing changes to knowing which ones are safe. Quality assurance can no longer be a human-gated step at the end of a PR - it has to be embedded at every stage of the developer loop, proactive and automated.\nToday the team runs the validation and safety gates for the fleet: automated test generation, coverage and safeguards show teams where they stand. We're extending to other safety signals built specifically for agent-generated code, so we can judge whether a change is genuinely correct as agents write and modify code at scale.\nAbout the role\nWe are looking for a Senior Software Engineer to help build the next generation of this platform: tools and guardrails that keep pace with an engineering org where a growing share of code is agent-generated.\nYou will design systems that thousands of engineers and their agents depend on, make build-vs-extend calls on what the platform should own versus expose through an API, and bring a security-conscious view to how autonomous agents get sandboxed, scoped, and safely given access to test infrastructure.\nKey responsibilities\nDesign and build validation and safety products used platform-wide: test generation, coverage and safeguards, deterministic and predictive test selection, and mutation testing at scale.\nBuild the polyglot static analysis layer that gives agent-generated code an automated, language-agnostic first quality gate.\nDevelop agent-specific safety signals: detect prompt flakiness (an agent producing inconsistent output across identical prompts or seeds), evaluate agent trajectories against execution traces, and score semantic correctness of agent-generated code against the original requirement, the agent's own stated intent, and observed behavior change.\nDefine clear platform capabilities and make deliberate build-vs-buy, build-vs-extend calls as the platform's scope grows.\nApply sound judgment on agent sandboxing, scoping, and data redaction wherever the platform gives agents access to test infrastructure or execution environments.\nWho you are\nExperienced building and operating a platform used by other engineering teams - you think about your product as a platform, not a one-off tool.\nComfortable making product calls: what capability the platform should own, what it should expose as an API, and when to extend versus build new.\nAn advanced user of agentic coding tools - you work daily with hooks, MCPs, and context management, even if you haven't built an agentic platform yourself.\nSecurity-minded: you have a working understanding of agent sandboxing, scoping, and redaction, even if it isn't your primary background.\nA strong communicator who can document technical tradeoffs clearly for both engineering and non-technical stakeholders.\nAn advocate for a strong testing culture: familiar with test frameworks, code coverage tooling, CI systems, and post-deployment verification.\nExperience we'd be excited about\nYou have designed or operated developer-platform infrastructure: distribution, CI/CD, or versioning systems used by many teams.\nYou have built or integrated LLM-based evaluation systems (LLM-as-judge, agent trajectory scoring, or similar).\nYou have worked with mutation testing, static analysis, or test-selection systems at scale.\nYou have hands-on experience sandboxing or scoping agent access to sensitive systems or data.\nInclusion is a Netflix value and we strive to host a meaningful interview experience for all candidates. If you want an accommodation/adjustmentfor a disability or any other reason during the hiring process, please send a request to your recruiting partner.\nWe are an equal-opportunity employer and celebrate diversity, recognizing that diversitybuilds stronger teams. We approach diversity and inclusion seriously and thoughtfully. We do not discriminate on the basis of race, religion, color, ancestry, national origin, caste, sex, sexual orientation, gender, gender identity or expression, age, disability, medical condition, pregnancy, genetic makeup, marital status, or military service.","description_format":"text","description_chars":4805,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Streaming & OTT Platforms"],"lifecycle":[{"event":"open","at":"2026-10-16T03:44:32Z"}],"visa":[],"liveness":{"score":57,"band":"ok","label":"Likely open","p_open":1,"p_active":0.758,"p_room":0.75,"age_days":26,"expected_fill_days":28,"reasons":["conf:0","velocity","win:late","comp:brand"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/netflix-senior-software-engineer-5-validation-safety-platform","json_url":"https://alion.io/job/netflix-senior-software-engineer-5-validation-safety-platform.json","meta":{"generated_at":"2026-10-17T15:10:07Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":20452,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":5888},"rest":"https://alion.io/mcp/rest/get_company?id=5888"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fnetflix-senior-software-engineer-5-validation-safety-platform"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fnetflix-senior-software-engineer-5-validation-safety-platform"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fnetflix-senior-software-engineer-5-validation-safety-platform"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/netflix-senior-software-engineer-5-validation-safety-platform\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fnetflix-senior-software-engineer-5-validation-safety-platform"}]}