{"id":552638,"url":"https://alion.io/job/wordware-senior-full-stack-engineer-back-end","title":"Senior Full Stack Engineer (Back-End)","company":{"id":20990,"name":"Wordware","domain":"wordware.ai","url":"https://alion.io/company/wordware","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Work at a Startup","truth_index":{"grade":"A","score":100,"open_postings":8,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":29,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","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":{"min":180000,"max":240000,"currency":"USD","period":"year","gross":null,"usd_annual":240000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Blue-Green Deployment","optional":false},{"name":"Cloudflare","optional":false},{"name":"Docker","optional":false},{"name":"Fly.io","optional":false},{"name":"Gmail","optional":false},{"name":"LLM","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Tool Use","optional":false},{"name":"TypeScript","optional":false},{"name":"Vercel AI SDK","optional":false},{"name":"WebSockets","optional":false},{"name":"Zod","optional":false}],"status":"live","first_seen_at":"2026-09-08T17:28:50Z","employer_posted_date":"2026-10-15","last_verified_at":"2026-10-17T01:19:04Z","board_verified":true,"closed_at":null,"days_open":38,"trust":{"level":"ok","repost_count":1,"flags":[],"days_open":37},"description":"Please read first\nThis is a full-time, in-person role based in San Francisco (Presidio) - we work from the office 5 days a week.\n\nYou must be based in the Bay Area or willing to relocate before starting.\n\nWe require US work authorisation , but are open to O-1 or J-1 visa sponsorship for exceptional candidates.\n\nAbout Sauna by Wordware\nEvery tool you use was built as an island, so you became the glue between them: a name from Gmail into the CRM, a time from the CRM into Calendly, a note from Calendly into a doc. AI showed up and mostly became an eleventh window to paste into.\nSauna is a hybrid of AI and software standing on one shared brain. It holds your context and hands you real software built on top of it, so an ordinary Calendly becomes one that writes the invite itself and knows which of your busy hours bend, and for whom. Software for the path you repeat, AI for the edge that never repeats.\nWordware is the team behind it, 15 people backed by Spark Capital, Felicis, and Y Combinator with a $30M seed, the largest in YC's history. We build from an office in the Presidio, fifty metres from Crissy Field beach, and we work absurdly hard because we can see and feel the outcome every day.\nAbout the Role:\nYou'll write and ship full-stack features end to end, from the agent runtime and backend APIs, to the web and desktop UI that users interact with every day.\nWe're still ~20 people and shipping to our first paying users. You won't just be building features, you'll be making the decisions that determine whether this system holds at 1000x the current load.\nWhat You'll Do:\nYou'll work directly with our CTO. Here are a few examples of the kinds of things you might work on:\nBuild and operate the sandbox infrastructure where agents execute code, process isolation, resource limits, secure credential handling across thousands of concurrent sessions.\n\nDesign the deployment and migration pipeline for a Cloudflare Workers + Fly.io http://Fly.io architecture, including blue-green rollouts and canary patterns.\n\nInstrument real-time workloads end to end: SSE streaming, task queues, and multi-model LLM provider routing.\n\nShip new backend capabilities, tool integrations, scheduled task execution, memory indexing, and see them used by real people the same week.\n\nReduce operational toil for a small team: structured logging, tracing, monitoring, and incident response tooling that actually works at our scale.\n\nPlus whatever you see that needs building.\n\nStack:\nTypeScript, Cloudflare Workers, Durable Objects, Hono, Drizzle ORM, Postgres, Zod, Vercel AI SDK, Docker, React, Vite\nWho You Are:\nMinimum:\nYou have 5+ years of engineering experience building and operating backend systems in production. You've been on-call.\n\nYou're fluent in TypeScript and comfortable working across the stack, but your instinct is to go deeper on the backend.\n\nYou've built real-time systems: WebSockets, SSE, event streaming, or message queues in production.\n\nYou have distributed systems intuition, you understand consistency tradeoffs and have opinions about them.\n\nYou've shipped infrastructure to real users, not just internal tooling.\n\nBonus (but not required):\nYou've worked with Cloudflare Workers, Durable Objects, or serverless compute at the edge.\n\nYou've built agent systems, model routing layers, or tool-use architectures with LLMs.\n\nYou've been a founder or early-stage engineer and care deeply about product.\n\nCompensation & Benefits:\nBase salary: $180K-$240K + meaningful early-stage equity + health, dental, 401(k), considerable PTO, gym budget, lunch. x\nThe Process:\nWe keep our process simple. Exceptional candidates go from first touch to offer within 2 weeks.\nApplication: Submit your resume and answer a few short questions.\n\n15-minute intro call: Quick check to align on location, motivation, and logistics. If it's a go, we move fast from here.\n\n45-minute technical interview: You'll work through a real backend problem. We're looking for fluency, depth, and how you think about systems.\n\nSystem design interview: A deep dive into how you architect systems. We'll walk through a real Wordware problem together.\n\nFinal conversation: We answer your questions and scope out the work trial.\n\nWork trial: Paid trial to work on a real project in person with us, usually a few days to two weeks (flexible to do what works for you). See how we work and whether this feels like the right fit on both sides.","description_format":"text","description_chars":4424,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":true,"industries":["LLM & Generative AI","AI Agents","AI Development Tools"],"lifecycle":[{"event":"open","at":"2026-09-08T17:28:50Z"},{"event":"close","at":"2026-10-08T00:17:27Z"},{"event":"reopen","at":"2026-10-15T05:47:20Z"}],"visa":[],"liveness":{"score":38,"band":"fade","label":"Fading","p_open":1,"p_active":0.7,"p_room":0.55,"age_days":37,"expected_fill_days":29,"reasons":["conf:2","win:tail"],"computed_at":"2026-10-16T05:45:00Z"},"pay":{"stated_usd_annual":240000,"is_top_pay":true},"html_url":"https://alion.io/job/wordware-senior-full-stack-engineer-back-end","json_url":"https://alion.io/job/wordware-senior-full-stack-engineer-back-end.json","meta":{"generated_at":"2026-10-17T01:38:02Z","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":2283,"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":20990},"rest":"https://alion.io/mcp/rest/get_company?id=20990"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fwordware-senior-full-stack-engineer-back-end"},{"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%2Fwordware-senior-full-stack-engineer-back-end"},{"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%2Fwordware-senior-full-stack-engineer-back-end"},{"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/wordware-senior-full-stack-engineer-back-end\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fwordware-senior-full-stack-engineer-back-end"}]}