{"schemaVersion":"jobsearcher.job.v1","id":"4e32306b9c08b82b9c7bace3","url":"https://jobsearcher.com/jobs/4e32306b9c08b82b9c7bace3","canonicalUrl":"https://jobsearcher.com/jobs/4e32306b9c08b82b9c7bace3","title":"Platform Engineer","description":"Platform / Infrastructure Engineer, Seed AI, Frontier Lab Customers, SF, $250k to $300kA seed stage AI startup building high-quality, long-horizon RL environments and post training data for frontier AI labs. All five US frontier labs are customers, plus leading international labs, with active engagements across them. The company is already cash flow positive.What makes them different: most data vendors scale by throwing people at the problem. This team treats post training data as a technical and research problem. The long-term vision is to build a model that produces post training data autonomously, so the company scales with talent, not headcount.The teamAround 10 people, and very strong. The founders come from AWS, where they worked on distributed databases and network infrastructure. The wider team includes engineers and researchers from Google, DeepMind and NVIDIA, a Stanford physics PhD who works with national labs, and a research lead who has contributed to well-known interpretability tooling. They recently released a research benchmark that drew strong interest from frontier labs.The roleInbound demand from frontier labs is outpacing what the team can deliver. You'll own the internal data production platform that powers everything, and make it as scalable, reliable and well integrated with the research team as possible.What you'll ownBuilding and scaling the internal data production platformTight integration between the platform and the research and data teamReliability and scale to meet surging demand from frontier labsCore infrastructure and systems work across the stackWhat they're looking for3 to 7 years of strong software or infrastructure engineeringDeep distributed systems experience: databases, storage, networking, messaging or orchestrationHas owned and scaled an internal platform end to endFast code comprehension - JVM-level debugging and async / concurrent I/O nice to haveEnjoys working closely with research and data teams, not siloed at the app layerNice to haveExperience building a data production or internal developer platformBackground at a strong infra company, AI lab or fast-growing startupOpen source contributions or serious side projects","company":"Benchstack Ai","rawCompany":"benchstack ai","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-10-12T09:06:47.472Z","occupations":[{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1221.00","title":"Computer and Information Research Scientists","slug":"computer-and-information-research-scientists"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"518210","title":"Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services","slug":"computing-infrastructure-providers-data-processing-web-hosting-and-related-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Platform Engineer","description":"Platform / Infrastructure Engineer, Seed AI, Frontier Lab Customers, SF, $250k to $300kA seed stage AI startup building high-quality, long-horizon RL environments and post training data for frontier AI labs. All five US frontier labs are customers, plus leading international labs, with active engagements across them. The company is already cash flow positive.What makes them different: most data vendors scale by throwing people at the problem. This team treats post training data as a technical and research problem. The long-term vision is to build a model that produces post training data autonomously, so the company scales with talent, not headcount.The teamAround 10 people, and very strong. The founders come from AWS, where they worked on distributed databases and network infrastructure. The wider team includes engineers and researchers from Google, DeepMind and NVIDIA, a Stanford physics PhD who works with national labs, and a research lead who has contributed to well-known interpretability tooling. They recently released a research benchmark that drew strong interest from frontier labs.The roleInbound demand from frontier labs is outpacing what the team can deliver. You'll own the internal data production platform that powers everything, and make it as scalable, reliable and well integrated with the research team as possible.What you'll ownBuilding and scaling the internal data production platformTight integration between the platform and the research and data teamReliability and scale to meet surging demand from frontier labsCore infrastructure and systems work across the stackWhat they're looking for3 to 7 years of strong software or infrastructure engineeringDeep distributed systems experience: databases, storage, networking, messaging or orchestrationHas owned and scaled an internal platform end to endFast code comprehension - JVM-level debugging and async / concurrent I/O nice to haveEnjoys working closely with research and data teams, not siloed at the app layerNice to haveExperience building a data production or internal developer platformBackground at a strong infra company, AI lab or fast-growing startupOpen source contributions or serious side projects","datePosted":"2026-10-12T09:06:47.472Z","dateModified":"2026-10-12T09:06:47.472Z","hiringOrganization":{"@type":"Organization","name":"Benchstack Ai","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"4e32306b9c08b82b9c7bace3"},"url":"https://jobsearcher.com/jobs/4e32306b9c08b82b9c7bace3"}}