{"id":2043270,"url":"https://alion.io/job/prometheus-senior-front-end-infrastructure-engineer-founding","title":"Senior Front-End Infrastructure Engineer (Founding)","company":{"id":79790,"name":"Prometheus","domain":"prometheus.ae","url":"https://alion.io/company/prometheus","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":154000,"max_usd":293000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":202},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Figma","optional":false},{"name":"Prometheus","optional":false},{"name":"React Three Fiber","optional":false},{"name":"React.js","optional":false},{"name":"Three.JS","optional":false},{"name":"Vercel AI SDK","optional":false},{"name":"WebGPU","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-07T16:51:33Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-10T23:00:42Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"About Prometheus\nPrometheus is building AI systems for engineering in the physical world: fleets of agents and solvers working on long-running, steerable jobs. The people and agents driving that work need an interface. Today it does not exist. You will be its first owner.\nThe role\nThis is a founding front-end role with full ownership of architecture, tooling, patterns, and visual quality. The interface differs from a typical web application in three ways.\nIt is agent-driven and ephemeral. Agents compose the UI as they work: surfacing a view here, a trace there, a decision that needs a human now. Views are generated, streamed, and discarded. There are no established patterns for this; you will set them.\n\nIt is real-time over long-running state. Sessions run for days. The interface streams live progress from thousands of concurrent jobs, stays consistent through reconnects, and lets a human steer mid-run.\n\nIt renders complex 3D and data-heavy content. WebGL/WebGPU, three.js-class rendering, large datasets, 60fps expectations.\n\nYou will build the component runtime, the streaming and state layer, the 3D visualization stack, and the design system. The role also requires real design sense: for most people who use the product, your work is the product.\nYou might be a fit if\nYou have 5+ years building complex web applications or front-end infrastructure, and something you are proud to demo.\n\nYou have framework-author-level depth in React or a comparable system: rendering internals, concurrency, streaming (RSC or equivalent), state management you could have written yourself.\n\nYou have built real-time collaborative or streaming interfaces: multiplayer editing, live dashboards, trading UIs, in-game interfaces, or agent products.\n\nYou have strong design instincts and a record of shipping interfaces people describe as fast and beautiful, ideally alongside designers of the Figma/Linear caliber, or as the designer yourself.\n\nYou are comfortable owning the whole surface alone at first: build tooling, testing, performance budgets, deployment.\n\nStrong pluses\n3D in the browser: three.js, react-three-fiber, WebGPU, large-mesh rendering.\n\nGenerative UI: streaming component trees from model output (AI SDK / v0-class work).\n\nLocal-first or CRDT-based state (Yjs, Automerge), sync engines, or presence systems.\n\nOpen-source authorship or maintainership on tooling or frameworks the community uses.","description_format":"text","description_chars":2413,"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":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Wealth Management & Financial Advisors","Asset Management & Funds"],"lifecycle":[{"event":"open","at":"2026-10-07T18:39:55Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":29,"reasons":["conf:2","velocity","win:early"],"computed_at":"2026-10-10T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/prometheus-senior-front-end-infrastructure-engineer-founding","json_url":"https://alion.io/job/prometheus-senior-front-end-infrastructure-engineer-founding.json","meta":{"generated_at":"2026-10-11T03:22:33Z","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","counted_by":"address","units_charged":1,"used_today":998,"day_limit":5000,"remaining_today":4002,"minute_limit":60,"resets_at":"2026-10-12T00:00:00Z"}},"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":79790},"rest":"https://alion.io/mcp/rest/get_company?id=79790"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fprometheus-senior-front-end-infrastructure-engineer-founding"},{"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%2Fprometheus-senior-front-end-infrastructure-engineer-founding"},{"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%2Fprometheus-senior-front-end-infrastructure-engineer-founding"},{"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/prometheus-senior-front-end-infrastructure-engineer-founding\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fprometheus-senior-front-end-infrastructure-engineer-founding"}]}