{"id":765227,"url":"https://alion.io/job/lumbra-full-stack-software-engineer-core-platform","title":"Full-Stack Software Engineer, Core Platform","company":{"id":679123,"name":"Lumbra","domain":"lumbra.ai","url":"https://alion.io/company/lumbra","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"C","score":58,"open_postings":10,"ghost_share":0.7,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-01T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Arlington, United States","New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":115000,"max_usd":239000,"period":"year","method":"role_country_seniority_unknown","sample_n":5985},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"FastAPI","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"SQLAlchemy","optional":false},{"name":"TypeScript","optional":false},{"name":"Context Engineering","optional":true},{"name":"GCP","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"LLM","optional":true},{"name":"Model Context Protocol","optional":true},{"name":"Tool Use","optional":true}],"status":"live","first_seen_at":"2026-04-29T17:19:55Z","employer_posted_date":"2026-04-29","last_verified_at":"2026-10-01T05:51:23Z","board_verified":true,"closed_at":null,"days_open":155,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":154},"description":"About Lumbra\nLumbra builds the vendor-neutral operating system for agentic AI in high-consequence environments. In our first ten months we won four U.S. Government prime contracts in open competition, every one deploying into classified spaces, and we are live on JWICS. We were selected from a field of more than 200 companies and won, beat two established defense primes head to head, and earned the follow-on now in execution. Lumbra is a team of engineers and operators from the intelligence community, special operations, and frontier AI research, with degrees from MIT, Carnegie Mellon, and West Point, and careers built at Palantir, Anduril, Northrop Grumman, Onebrief, JSOC, NSA, and CIA. They have lived this problem from the inside.\nAbout the Role\nNebula turns days of manual synthesis into minutes of analysis. We want a full-stack engineer to own features end to end across the Python backend and the React frontend, putting real AI tooling directly in analysts' hands.\nWhat You'll Own\nDesign and build FastAPI endpoints backed by PostgreSQL and SQLAlchemy for agent configuration, workflow orchestration, and evaluation pipelines.\n\nImplement interactive React and TypeScript features: conversation interfaces, workflow visualization, and knowledge-graph exploration.\n\nBuild durable workflow orchestration for long-running agent execution, including delegation, monitoring, and timeout propagation.\n\nOwn features across the full stack, from database migration through API contract to UI state.\n\nBring clean abstractions and well-defined interfaces to a fast-moving codebase, writing code that survives constant change and stays easy to understand, refactor, and extend.\n\nWrite contract-driven tests across backend and frontend that cover the spec rather than the implementation, working test-first.\n\nDesign testing for non-deterministic AI components: metamorphic testing, property-based testing, and regression suites that catch capability loss without overfitting to specific outputs.\n\nContribute to the Python and TypeScript client SDKs so programmatic consumers get ergonomic, well-typed access.\n\nOwn performance across the stack and profile before guessing: API latency, query efficiency, render performance, and end-to-end streaming latency. Treat slowness as a defect.\n\nDebug across service boundaries with local environments and distributed tracing.\n\nRequired Qualifications\nShips production Python (async, relational modeling, layered services) and production React and TypeScript\n\nReasons comfortably about data flow through every layer, from schema to UI state\n\nWrites clean, well-tested code and works test-first\n\nPreferred Qualifications\nAgentic AI systems: harness engineering, context engineering, or building on LLM APIs\n\nDistributed task orchestration systems\n\nGraph databases or vector search for knowledge representation and retrieval\n\nModel Context Protocol or similar tool-use frameworks\n\nIdentity management (OAuth2/OIDC)\n\nOpen-source developer-tooling contributions\n\nIntelligence analysis, OSINT, or analytical workflows that inform product intuition\n\nCloud infrastructure (GCP or equivalent): managed Kubernetes, managed databases, secrets management\nWhat We Offer\n\nHealth, dental, and vision insurance. 99% of your premiums covered, and 100% of your dependents' premiums.\n\nOptional HSA plan. Lower premium, HSA eligible, fully portable, self directed or managed.\n\nHealth Reimbursement Account for qualified healthcare expenses.\n\nLife insurance of $150,000 plus AD&D, 100% company paid.\n\n401(k) with a 100% match on the first 6%, immediately vested. No cliff, no waiting period. Yours from day one.\n\nWellhub Gold. Everything from Gold's Gym to Lifetime, fully covered, plus [solidcore], F45, and hundreds of other studios.\n\nUnlimited PTO. Real time off, not accrual based. Take what you need, no counting required.\n\nEvery federal holiday, plus additional paid days off over the winter break.\n\nSupportive leave of absence program, including time off for military service, medical events, and parental leave.\n\nBreakfast, lunch, and endless snacks every day you are in the office.\n\nPre-tax commuter benefits.\n\nCompany phone plan. A new iPhone, fully company paid.","description_format":"text","description_chars":4196,"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":["Life insurance","Parental leave","Unlimited PTO","Vision insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["AI Agents"],"lifecycle":[{"event":"open","at":"2026-09-11T19:44:20Z"}],"liveness":{"score":4,"band":"cold","label":"Long shot","p_open":1,"p_active":0.155,"p_room":0.28,"age_days":154,"expected_fill_days":30,"reasons":["conf:26","stale_co","ghost","win:tail","crowd:"],"computed_at":"2026-10-01T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/lumbra-full-stack-software-engineer-core-platform","json_url":"https://alion.io/job/lumbra-full-stack-software-engineer-core-platform.json","meta":{"generated_at":"2026-10-01T20:22:51Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":2910,"day_limit":5000,"remaining_today":2090,"minute_limit":60,"resets_at":"2026-10-02T00:00:00Z"}}}