{"id":1933004,"url":"https://alion.io/job/physical-intelligence-ml-engineer-api-platform","title":"ML Engineer - API Platform","company":{"id":48436,"name":"Physical Intelligence","domain":"pi.website","url":"https://alion.io/company/physicalintelligence","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":87,"open_postings":27,"ghost_share":0,"stale_share":0.333,"repost_share":0,"time_to_fill_p50_days":80,"computed_at":"2026-10-13T05:45:00Z"}},"role":"AI/ML","role_family":"AI/ML","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":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":162000,"max_usd":356000,"period":"year","method":"role_country_seniority_unknown","sample_n":3786},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Fine-tuning","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"ClickHouse","optional":true},{"name":"GCP","optional":true},{"name":"Kubernetes","optional":true},{"name":"LLM","optional":true},{"name":"PostgreSQL","optional":true},{"name":"TypeScript","optional":true},{"name":"WebSockets","optional":true}],"status":"live","first_seen_at":"2026-10-05T20:18:58Z","employer_posted_date":"2026-10-05","last_verified_at":"2026-10-13T03:46:08Z","board_verified":true,"closed_at":null,"days_open":7,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":7},"description":"Who We Are\nPhysical Intelligence is bringing general-purpose AI into the physical world. We are a group of engineers, scientists, roboticists, and company builders developing foundation models and learning algorithms to power the robots of today and the physically-actuated devices of the future.\nWe’ve made significant progress toward building models that can control many different robots across a wide range of tasks. Now, we’re building the platform that will make those models accessible to the broader world.\nAs an API Product Engineer, you’ll build the product surface that allows other companies to use Pi’s models much like developers use an LLM API today: bring their own data, fine-tune models, evaluate them, and run low-latency inference in their own environments.\nYou’ll own this experience end to end, turning capabilities that today require close collaboration with our team into a platform that can eventually support thousands-and ultimately millions-of robots.\nThe Team\nSoftware Engineering at Pi builds the systems that scale research breakthroughs into reliable products in the physical world.\nThis role sits at the intersection of our AI, infrastructure, and external partners. You’ll work closely with researchers and engineers to turn rapidly evolving model capabilities into APIs and tools that external users, from hobbyists to large organizations, can actually build on.\nToday, onboarding a new partner to Pi can involve significant hands-on work. The goal is to make that increasingly unnecessary: partners should be able to bring us data, fine-tune a model, evaluate it, and run inference through a product that is intuitive, reliable, and built to scale.\nIn This Role You Will\nThis is a software and systems role first. Robotics experience is not required, and we’re particularly excited about people who have built developer platforms, model APIs, or infrastructure products outside of robotics.\nBuild Pi’s model API end to end, including data ingestion, fine-tuning, evaluation, low-latency remote inference, partner-facing tools, and deployment integrations.\n\nDesign systems that can scale from a small number of deeply integrated partners to thousands of organizations and potentially millions of robots.\n\nArchitect reliable, multi-tenant infrastructure around rate limiting, isolation, backpressure, versioning, observability, and SLOs.\n\nTurn partner data into a first-class product experience, from initial upload through validation, processing, fine-tuning, and evaluation.\n\nBuild and operate low-latency inference systems that allow Pi models to control robots running in real-world environments.\n\nWork closely with researchers to turn new model capabilities into stable, usable product surfaces.\n\nLearn from how partners use the platform and turn recurring friction into better APIs, tooling, documentation, and abstractions.\n\nWrite high-quality production code that integrates deeply with Pi’s existing infrastructure.\n\nDefine what the developer platform for general-purpose robotics should look like. There is no established playbook for this yet.\n\nWhat We Hope You'll Bring\nStrong software engineering fundamentals and experience building production systems.\n\nDeep backend and systems experience across APIs, services, databases, caching, distributed systems, and infrastructure.\n\nExperience building and scaling developer platforms. We’re especially interested in people who have shipped platforms for model fine-tuning, inference, or other compute-intensive workloads.\n\nAn understanding of the problems that emerge as systems scale: reliability, latency, multi-tenancy, versioning, observability, and operational complexity.\n\nEnough familiarity with machine learning systems to deploy, serve, and debug models in production. You do not need to be an ML researcher.\n\nStrong Python skills and the ability to work comfortably across infrastructure and product boundaries.\n\nA high degree of ownership. You’re comfortable taking an ambiguous problem, building the first version end to end, and then designing the system so it no longer depends on you.\n\nBonus Points If You Have\nExperience building low-latency or real-time systems, including streaming, inference transport, WebSockets, QUIC, or similar technologies.\n\nExperience building model-serving, inference, fine-tuning, or developer-platform infrastructure.\n\nExperience at an early-stage infrastructure, AI, robotics, or autonomous systems company.\n\nFamiliarity with our stack: Python, Postgres, ClickHouse, GCP, Kubernetes, Modal, React, and TypeScript.\n\nExperience with security, authentication, authorization, or multi-tenant infrastructure.\n\nWhat This Role Is Not\nThis is not a Customer Success role. You won’t own ongoing partner support or change management inside customer organizations.\n\nThis is not a Partner Roboticist or Applied Research role. You won’t be responsible for training policies for individual partners or debugging robots on site.\n\nThis is not a traditional ML infrastructure role focused primarily on training systems, compilers, or accelerator scheduling. You’ll work closely with those systems, but your focus is the product and platform through which the outside world uses Pi’s models.\n\nPursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.","description_format":"text","description_chars":5353,"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":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Robotics AI","Foundation Models","AI Research Labs"],"lifecycle":[{"event":"open","at":"2026-10-05T22:32:56Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":7,"expected_fill_days":80,"reasons":["conf:1","velocity","win:early"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/physical-intelligence-ml-engineer-api-platform","json_url":"https://alion.io/job/physical-intelligence-ml-engineer-api-platform.json","meta":{"generated_at":"2026-10-13T06:15:27Z","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":9738,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"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":48436},"rest":"https://alion.io/mcp/rest/get_company?id=48436"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fphysical-intelligence-ml-engineer-api-platform"},{"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%2Fphysical-intelligence-ml-engineer-api-platform"},{"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%2Fphysical-intelligence-ml-engineer-api-platform"},{"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/physical-intelligence-ml-engineer-api-platform\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fphysical-intelligence-ml-engineer-api-platform"}]}