{"id":4187839,"url":"https://alion.io/job/encord-lead-security-engineer-application-security","title":"Lead Security Engineer (Application Security)","company":{"id":557,"name":"Encord","domain":"encord.com","url":"https://alion.io/company/encord","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":90,"open_postings":38,"ghost_share":0.079,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":69,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Security","role_family":"Security","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"GCP","optional":false},{"name":"GDPR","optional":false},{"name":"HIPAA","optional":false},{"name":"Kubernetes","optional":false},{"name":"OWASP Top 10","optional":false},{"name":"Python","optional":false},{"name":"SOC 2","optional":false},{"name":"TypeScript","optional":false},{"name":"LLM","optional":true},{"name":"UiPath","optional":true}],"status":"live","first_seen_at":"2026-11-12T16:50:28Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-12T18:45:50Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"About us\nEncord is the universal data layer for AI that helps 300+ AI teams train and run models on the right data. Our platform indexes, curates, annotates, and evaluates data across the full AI lifecycle, from development through production.\nTrusted by Woven by Toyota, AXA, UiPath, Zipline, and more. We're an ambitious team of 100+ working at the frontier of AI and have raised $60M in Series C funding from Wellington Management, CRV, Next47 and Y Combinator.\nAbout the role\nAs Lead Security Engineer, you'll own application security across our platform, embedding secure practices into how we design, build, and ship software, and setting the direction for a growing security function.\nWhat you'll do\nOwn the application security program end to end: threat modelling, secure design reviews, code review, and vulnerability management.\n\nBuild security into the SDLC with SAST, DAST, dependency/SCA, and secrets scanning integrated into CI/CD without slowing teams down.\n\nPartner with engineering on authentication, authorization, multi-tenancy isolation, and data protection across our APIs and SDKs.\n\nLead penetration testing, bug bounty triage, and incident response for application-layer issues.\n\nSupport customer security reviews and compliance (SOC 2, HIPAA, GDPR) with practical technical controls.\n\nMentor engineers and raise the security bar across the organisation.\n\nWhat we're looking for\n7+ years in software or security engineering, with significant hands-on AppSec experience.\n\nStrong coding ability (Python and/or TypeScript ideal) and the credibility to review and fix code, not just flag issues.\n\nDeep knowledge of web and API security (OWASP Top 10, OAuth/OIDC, authz models, SSRF, injection, deserialisation).\n\nExperience securing cloud-native SaaS (GCP or AWS, Kubernetes, containers).\n\nTrack record of building security tooling and processes in a fast-moving product company.\n\nClear communicator who can influence engineering teams and speak to enterprise customers.\n\nNice to have\nExperience with ML/AI systems security (data pipelines, model supply chain, LLM-specific risks such as prompt injection).\n\nBackground in regulated industries such as healthcare.\n\nPrevious experience as an early or first dedicated security hire.\n\nWhy Encord\nCompetitive salary, and meaningful equity in a high-growth startup\n\nStrong in-person culture - most of the team works from our London office 4+ days/week\n\n25 days annual leave + UK public holidays\n\nAnnual learning & development budget\n\nTravel for customer visits, events, and conferences across the UK and Europe\n\nDaily company lunches\n\nMonthly socials & bi-annual team offsites\n\nOperating principles\nHigh agency\nYou see something broken, you fix it or find the person who can. We celebrate the people who solve 90% of a problem before anyone asks.\nBuild with care & urgency\nWe bear-hug the customer. Former founders and people from fast-moving, high-stakes environments thrive here.\nSelf-aware & hungry\nWe stay warm, self-aware, and genuinely hungry. We elevate our peers, and ego doesn't last long.\nInvent in real time\nWe move toward the ambiguity. We’re pragmatic, resourceful, energized by the fact that there's no playbook.\nIf you're looking to do the most meaningful work of your career alongside people who push you to be better, we'd love to meet you.","description_format":"text","description_chars":3321,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Annual leave","Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Application Security","MLOps","AI Training Data & Annotation"],"lifecycle":[{"event":"open","at":"2026-11-12T18:45:50Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":69,"reasons":["conf:2","win:early"],"computed_at":"2026-11-12T20:49:46Z"},"pay":null,"html_url":"https://alion.io/job/encord-lead-security-engineer-application-security","json_url":"https://alion.io/job/encord-lead-security-engineer-application-security.json","meta":{"generated_at":"2026-11-12T20:49:46Z","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":44035,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":557},"rest":"https://alion.io/mcp/rest/get_company?id=557"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fencord-lead-security-engineer-application-security"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fencord-lead-security-engineer-application-security"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fencord-lead-security-engineer-application-security"},{"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/encord-lead-security-engineer-application-security\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fencord-lead-security-engineer-application-security"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4187839}},{"tool":"search_jobs","arguments":{"company":"encord.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4187839},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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