{"id":53526,"url":"https://alion.io/job/fonzi-senior-ai-product-engineer","title":"Senior AI Product Engineer","company":{"id":1138,"name":"Fonzi","domain":"fonzi.ai","url":"https://alion.io/company/fonzi","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","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":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":175000,"max":225000,"currency":"USD","period":"year","gross":null,"usd_annual":225000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Claude Code","optional":false},{"name":"Copilot","optional":false},{"name":"Cursor","optional":false},{"name":"LLM","optional":false},{"name":"Next.js","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"GCP","optional":true},{"name":"Go","optional":true},{"name":"JavaScript","optional":true},{"name":"Python","optional":true},{"name":"Temporal","optional":true}],"status":"live","first_seen_at":"2026-01-23T17:06:46Z","employer_posted_date":"2026-01-23","last_verified_at":"2026-10-17T14:24:19Z","board_verified":true,"closed_at":null,"days_open":266,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":266},"description":"Senior AI Product Engineer\nAbout Fonzi AI\nWe're a Series A startup backed by Lightspeed revolutionizing hiring through AI. Founded by repeat entrepreneurs (Kumospace), we launched our AI-powered recruiting marketplace in June 2025 and are already revenue-positive with just under 100 employer partners-75%+ are AI-native companies. Thousands of engineers are on our platform, and we're running Match Days every two weeks where pre-screened candidates receive competing offers from top employers.\nOur vision: build the infrastructure where AI learns what engineers actually do, what they want, and matches them to opportunities automatically. We're not just using AI at the edges-we're building toward a future where intelligent systems handle the entire recruiting workflow, and we need engineers who want to build that future with us.\nThe Role\nThe Senior AI Product Engineer is a new kind of role for a new era of software development. The line between \"full-stack engineer\" and \"AI engineer\" is blurring fast-and at Fonzi, we've stopped pretending it exists.\nYou'll own features end-to-end: from database schemas to React components to the AI agents that make our platform intelligent. Some weeks you're building robust backend systems. Other weeks you're experimenting with the latest models to create features that feel like magic. Most weeks, it's both.\nWe're looking for engineers who've had the \"aha moment\"-who understand that AI changes everything about how software gets built-and who want to work at a company where that belief is baked into every product decision.\nWhat You'll Build\nAI agents that conduct intelligent conversations with candidates-voice interfaces that onboard engineers, coaching systems that prep them for interviews, matching algorithms that learn from every interaction\n\nThe platform that powers a two-sided marketplace-TypeScript/Node.js backends, React/Next.js frontends, PostgreSQL data layer, all built for speed and iteration\n\nAI-powered features from concept to production-rapidly prototype with the latest models, make smart trade-offs between cost/quality/speed, then scale the winners to thousands of users\n\nThe intelligence layer that makes our marketplace smarter with every candidate conversation, every match, every hire-the data flywheel that will define our competitive advantage\n\nRequired Experience\nTypeScript across the stack: Strong proficiency in TypeScript, Node.js, React, and Next.js-you'll move fluidly between backend and frontend\n\nProduction AI experience: You've shipped LLM-powered features to real users-whether that's agentic systems, conversational AI, intelligent automation, or integrating models into applications. We care that you've done it, not how deep you went.\n\nProduct engineering mindset: You care about user experience, not just technical implementation. You'll help define the \"what\" not just build the \"how.\"\n\nDatabase fluency: PostgreSQL experience-efficient queries, sensible schemas, understanding of how data flows through a system\n\nStartup velocity: 5+ years of experience with meaningful time in fast-paced environments where you owned problems end-to-end\n\nShip-first mentality: You default to shipping and iterating. You're deliberate about trade-offs but allergic to over-engineering.\n\nAI coding tool mastery: You're fluent with tools like Claude Code, Cursor, Copilot, or similar. You don't just use them-you've developed workflows that make you dramatically faster. You understand when to lean on AI assistance and when to think for yourself.\n\nThe AI Spectrum (We're Flexible)\nWe recognize that \"AI Engineer\" means different things to different people. You might be:\nA full-stack engineer who's been going deep on AI for the past year and wants to do more\n\nAn AI-focused engineer who can also build solid product features\n\nSomeone who's been building agentic systems and wants to apply that to a real business problem\n\nA product engineer who uses AI tools daily and wants to build AI features, not just use them\n\nAll of these profiles can succeed here. What matters is that you can build across the stack AND have genuine experience shipping AI to production. The ratio is less important than the capability.\nNice to Have\nVoice AI or conversational interface experience\n\nExperience with agentic systems, AI orchestration, or Temporal.io\n\nBackground in marketplace, recruiting, or HR technology\n\nServerless architecture and GCP experience\n\nPython for AI/ML tooling\n\nYou've created custom Skills, rules, or workflows for Claude Code, Cursor, or similar tools-you don't just use AI coding assistants, you extend them\n\nWhat Makes You Successful Here\nExtreme ownership: You take projects and run. Our tech lead wants to hand off entire features, not provide ongoing support.\n\nAdaptability: Comfortable with rapid pivots, killing work mid-stream, and FIFO priority shifts. We move fast and directions change.\n\nDirect communication: You flag issues early, propose changes proactively, and translate technical concepts for non-technical teammates.\n\nBusiness instincts: You understand how your code impacts revenue and user experience. You make trade-offs accordingly.\n\nWhat Makes This Special\nAI playground: We're testing every model available. Constant experimentation. Freedom to build and break things.\n\nReal users, real feedback: Thousands of engineers on the platform. Your code ships and you see impact immediately.\n\nGround floor timing: Early enough to shape architecture and culture. Established enough to have traction and resources.\n\nNo red tape: Flat structure, minimal documentation overhead, streamlined decisions. We optimize for speed.\n\nRepeat founders: Leadership that's done this before. Sustainable pace. No theater.\n\nLocation\nBrooklyn, NY (Williamsburg) - 3-4 days/week in office\nCompensation\n$175,000 - $225,000 base + meaningful equity","description_format":"text","description_chars":5836,"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":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Recruiting & Staffing","Recruiting Software & ATS"],"lifecycle":[{"event":"open","at":"2026-01-23T17:06:46Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.277,"p_room":0.28,"age_days":266,"expected_fill_days":37,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":225000,"is_top_pay":true},"html_url":"https://alion.io/job/fonzi-senior-ai-product-engineer","json_url":"https://alion.io/job/fonzi-senior-ai-product-engineer.json","meta":{"generated_at":"2026-10-17T15:34:02Z","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":21099,"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":1138},"rest":"https://alion.io/mcp/rest/get_company?id=1138"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffonzi-senior-ai-product-engineer"},{"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%2Ffonzi-senior-ai-product-engineer"},{"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%2Ffonzi-senior-ai-product-engineer"},{"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/fonzi-senior-ai-product-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffonzi-senior-ai-product-engineer"}]}