{"id":3908514,"url":"https://alion.io/job/endex-security-engineer","title":"Security Engineer","company":{"id":673798,"name":"Endex","domain":"endex.ai","url":"https://alion.io/company/endex","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":85,"open_postings":12,"ghost_share":0,"stale_share":0.583,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-07T05:47:08Z"}},"role":"Security","role_family":"Security","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["New York, United States","Singapore","Los Angeles, United States","Denver, United States","London, United Kingdom","Austin, United States","San Francisco, United States","Chicago, United States"],"countries":["US","SG","GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":true},{"name":"IAM","optional":true},{"name":"OpenAI","optional":true},{"name":"Threat Modeling","optional":true}],"status":"live","first_seen_at":"2026-11-07T04:24:23Z","employer_posted_date":"2026-11-07","last_verified_at":"2026-11-07T16:50:24Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Who We Are\nEndex builds AI agents that handle complex, end-to-end work for the world's most demanding teams. Today we're deployed across leading financial institutions and Fortune 500 companies, embedded in the tools and workflows they rely on. We operate at the frontier of agentic knowledge work, partnering closely with top AI research labs and backed by the OpenAI Startup Fund. We're on a mission to build the most capable digital coworker in the world.\nAbout the Role\nLocation: New York City (Primary), Denver, Chicago, Singapore (APAC), London, San Francisco, Austin, Los Angeles\nCommitment: 5 Days In-Person\nWe're looking for an engineer who can find meaningful security weaknesses and work with the team to fix them.\nAs a Security Engineer at Endex, you'll build security improvements across our applications and infrastructure. You'll work directly with product engineers and compliance owners to turn identified risks into tested technical controls.\nYour Key Responsibilities\nSecure Product Architecture: Review authentication, authorization, tenant boundaries and data flows to find practical weaknesses before they reach production.\n\nBuild Technical Defenses: Improve cloud identity, secrets management, application protections and security checks with the engineering team.\n\nManage Vulnerabilities: Investigate findings, prioritize remediation and verify fixes.\n\nSupport Secure Development: Build useful checks and guidance into engineering workflows.\n\nInvestigate and Learn: Help analyze security incidents and build detection or prevention improvements that address the underlying failure mode.\n\nWhat We're Looking For\nSecurity Engineering Experience: You've investigated and remediated real application or cloud security issues.\n\nSoftware Fluency: You can read code, build tooling and work with production 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