{"id":64681,"url":"https://alion.io/job/baseten-ai-engineer","title":"AI Engineer","company":{"id":4399,"name":"Baseten","domain":"baseten.co","url":"https://alion.io/company/baseten","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":74,"open_postings":17,"ghost_share":0,"stale_share":0.824,"repost_share":0.059,"time_to_fill_p50_days":93,"computed_at":"2026-10-16T05:45:00Z"}},"role":"AI/ML","role_family":"AI/ML","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":{"min":220000,"max":260000,"currency":"USD","period":"year","gross":null,"usd_annual":260000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"AI Agents","optional":false},{"name":"Baseten","optional":false},{"name":"Cursor","optional":false},{"name":"LangChain","optional":false},{"name":"LLM","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Post-training","optional":false},{"name":"Python","optional":false},{"name":"Spark","optional":false},{"name":"Claude Code","optional":true},{"name":"LoRA","optional":true},{"name":"Machine Learning","optional":true},{"name":"Model Context Protocol","optional":true},{"name":"OpenAI Codex","optional":true},{"name":"PEFT","optional":true},{"name":"Reinforcement Learning","optional":true},{"name":"SFT","optional":true},{"name":"Synthetic Data","optional":true}],"status":"live","first_seen_at":"2026-08-20T01:48:03Z","employer_posted_date":"2026-08-20","last_verified_at":"2026-10-16T09:20:55Z","board_verified":true,"closed_at":null,"days_open":57,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":57},"description":"ABOUT BASETEN\nBaseten powers mission-critical inference for the world's most dynamic AI companies, like Cursor, Notion, OpenEvidence, Abridge, Clay, Gamma, and Writer. By uniting applied AI research, flexible infrastructure, and seamless developer tooling, we enable companies operating at the frontier of AI to bring cutting-edge models into production. We're growing quickly and recently raised our $1.5B Series F, led by Altimeter Capital, Conviction Partners, and Spark Capital. Join us and help build the platform engineers turn to ship AI products.\nTHE ROLE\nAre you the person on your team who builds the agent everyone else ends up using? We're looking for an AI Engineer to join our Training Product team and do that at Baseten. You'll build AI-driven product features for the customers training and post-training frontier models on our platform, and you'll raise the ceiling on how Baseten itself uses AI internally, turning manual workflows into agentic ones that make every other team faster.\nYou'll work directly with our research engineers to scope and build products, taking ideas from a research loop that already works internally to something customers can run themselves. This is a hands-on role with real autonomy. You'll pick the problems worth solving, build the harnesses, execution flows, and guardrails that make AI systems reliable, and own the results. If you've been shipping agents and want that to be the job, let's talk.\nEXAMPLE INITIATIVES\nTake a look at these blog posts written by members of our team:\nBaseten Training: an autoresearch substrate\n\nIntroducing Baseten Loops\n\nHarnesses are everything. Here's how to optimize yours.\n\nBuilding with NVIDIA Nemotron 3 Ultra and LangChain Deep Agents Code on Baseten\n\nRESPONSIBILITIES\nBuild and ship agentic product experiences, including chat-style and assistant-like interfaces, from prototype to GA.\n\nDesign the harnesses, execution flows, and guardrails that make AI systems reliable in production.\n\nBuild internal automation and AI tooling that measurably increases the velocity of engineering, research, and go-to-market teams.\n\nPartner with research engineers to scope product opportunities out of internal research workflows and turn them into customer-facing features.\n\nDefine and instrument evals so you know whether a change actually improved output quality.\n\nWork throughout the stack (API layer, backend, agent orchestration, frontend) to implement features end to end.\n\nUse Baseten's own training and inference products yourself to develop intuition around customer workflows.\n\nIdentify where AI can replace manual process across the company and build the thing rather than write the proposal.\n\nFix bugs and resolve customer issues with urgency.\n\nREQUIREMENTS\n5+ years of experience building and shipping software applications.\n\nDemonstrated experience building AI or LLM-powered products, agents, or agentic workflows that real users depend on.\n\nStrong software engineering fundamentals and the ability to clear a real technical bar, not just prompt well.\n\nAbility to build accurate mental models of how systems work under the hood, including the models and harnesses you're building on.\n\nProficiency in Python, with fluency in at least one other language.\n\nComfort working autonomously in a fast-moving environment with limited structure.\n\nAbility to move between customer-facing product work and internal tooling and automation.\n\nStrong communication skills, with the ability to bridge technical depth and business needs.\n\nNICE TO HAVE\nExperience as a founding engineer or early employee at a startup.\n\nExperience building evals, agent observability, or tooling for non-deterministic systems.\n\nFamiliarity with agent frameworks and harnesses (LangChain, Claude Code, Codex, OpenCode, MCP).\n\nExperience with model development methods like supervised fine-tuning, reinforcement learning, synthetic data generation, LoRA, and full fine-tunes.\n\nFrontend fluency.\n\nBENEFITS\nCompetitive compensation, including meaningful equity\n\n(U.S. only) 100% coverage of medical, dental, and vision insurance for employee and dependents\n\nFlexible PTO policy including company wide Winter Break (our offices are closed from Christmas Eve to New Year's Day!)\n\nPaid parental leave\n\nFertility and family-building stipend through Carrot\n\n(U.S. only) Company-facilitated 401(k)\n\nExposure to a variety of ML startups, offering unparalleled learning and networking opportunities.\n\nApply now to embark on a rewarding journey in shaping the future of AI! If you are a motivated individual with a passion for machine learning and a desire to be part of a collaborative and forward-thinking team, we would love to hear from you.\nAt Baseten, we are committed to fostering a diverse and inclusive workplace. We provide equal employment opportunities to all employees and applicants without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status.\nWe are an Equal Opportunity Employer and will consider qualified applicants with criminal histories in a manner consistent with applicable law (by example, the requirements of the San Francisco Fair Chance Ordinance, where applicable).","description_format":"text","description_chars":5252,"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","Parental leave","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["MLOps","AI Compute & Inference"],"lifecycle":[{"event":"open","at":"2026-08-20T01:48:03Z"}],"visa":[],"liveness":{"score":41,"band":"fade","label":"Fading","p_open":1,"p_active":0.565,"p_room":0.72,"age_days":57,"expected_fill_days":93,"reasons":["conf:1","stale_co","velocity","win:mid","crowd:brand"],"computed_at":"2026-10-16T05:45:00Z"},"pay":{"stated_usd_annual":260000,"is_top_pay":true},"html_url":"https://alion.io/job/baseten-ai-engineer","json_url":"https://alion.io/job/baseten-ai-engineer.json","meta":{"generated_at":"2026-10-16T12:49:31Z","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":12074,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-17T00:00:00Z"}},"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":4399},"rest":"https://alion.io/mcp/rest/get_company?id=4399"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fbaseten-ai-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%2Fbaseten-ai-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%2Fbaseten-ai-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/baseten-ai-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fbaseten-ai-engineer"}]}