{"schemaVersion":"jobsearcher.job.v1","id":"0674d55ef341d2891370b941","url":"https://jobsearcher.com/jobs/0674d55ef341d2891370b941","canonicalUrl":"https://jobsearcher.com/jobs/0674d55ef341d2891370b941","title":"Software Engineer","description":"The company\nCrooter is a London-based software company building the operating system for modern recruitment consultancies. We work with executive search firms, contingency agencies and embedded talent partners who want a single, intelligent workspace for the way recruitment actually works and we are hiring for one our client AfterQuery.\nAbout AfterQuery\nAfterQuery builds the most complex infrastructure powering frontier data creation for agentic and hard reasoning workflows. Working with the leading AI labs and the go-to data infrastructure partner for YC companies. Sharp hockey-stick growth.\n$34M raised. YC-backed. Founding team from Citadel Securities, Goldman Sachs, Morgan Stanley, Silver Lake. 40 employees. Founded 2024. FiDi, San Francisco.\nWhat You’ll Do\nEnd-to-end ownership over projects that push the frontier of AI evaluation. This is not a narrow role — one week you might prototype a new RL environment, the next you’ll deploy distributed experiments on Kubernetes.\nDesign and build scalable systems — RL environments, APIs, and human-in-the-loop platforms.\nCollaborate across teams — research, product, and design to ship features quickly.\nWrite clean, maintainable code — and contribute to documentation.\nCode reviews and design discussions — maintain the team’s technical bar.\nSolve scalability challenges — real-world reliability at scale.\nCore infrastructure — powering data and evaluation for leading AI labs.\nExperience\n1–4 years as a full-stack SWE\nExperience at a high-growth startup, trading firm, or as a founding engineer\nEnd-to-end builder with ownership bias\nTechnical Skills\nFull-stack: Next.js/React, Node.js/Python, Kubernetes\nKafka, Redis, Elasticsearch\nDegree from a top school\nProfile\nComfortable being client-facing with AI lab researchers\nOn-site 5 days in San Francisco\nWhat Makes You Stand Out\n0→1 engineering at a high-growth startup — built and shipped production systems end-to-end\nExperience at a human data AI company or working directly with frontier AI labs\nIntegrated full-stack + distributed systems depth (not isolated frontend or backend only)\nStable tenure with high-impact delivery in fast-paced environments\nExcited to build the data infrastructure that powers how the world’s best AI models learn\nPay: $180,000.00 - $220,000.00 per year\nBenefits:\nVisa sponsorship\nWork Location: In person","company":"Crooter","rawCompany":"crooter","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-08-06T15:43:00.215Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"industries":[{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Software Engineer","description":"The company\nCrooter is a London-based software company building the operating system for modern recruitment consultancies. We work with executive search firms, contingency agencies and embedded talent partners who want a single, intelligent workspace for the way recruitment actually works and we are hiring for one our client AfterQuery.\nAbout AfterQuery\nAfterQuery builds the most complex infrastructure powering frontier data creation for agentic and hard reasoning workflows. Working with the leading AI labs and the go-to data infrastructure partner for YC companies. Sharp hockey-stick growth.\n$34M raised. YC-backed. Founding team from Citadel Securities, Goldman Sachs, Morgan Stanley, Silver Lake. 40 employees. Founded 2024. FiDi, San Francisco.\nWhat You’ll Do\nEnd-to-end ownership over projects that push the frontier of AI evaluation. This is not a narrow role — one week you might prototype a new RL environment, the next you’ll deploy distributed experiments on Kubernetes.\nDesign and build scalable systems — RL environments, APIs, and human-in-the-loop platforms.\nCollaborate across teams — research, product, and design to ship features quickly.\nWrite clean, maintainable code — and contribute to documentation.\nCode reviews and design discussions — maintain the team’s technical bar.\nSolve scalability challenges — real-world reliability at scale.\nCore infrastructure — powering data and evaluation for leading AI labs.\nExperience\n1–4 years as a full-stack SWE\nExperience at a high-growth startup, trading firm, or as a founding engineer\nEnd-to-end builder with ownership bias\nTechnical Skills\nFull-stack: Next.js/React, Node.js/Python, Kubernetes\nKafka, Redis, Elasticsearch\nDegree from a top school\nProfile\nComfortable being client-facing with AI lab researchers\nOn-site 5 days in San Francisco\nWhat Makes You Stand Out\n0→1 engineering at a high-growth startup — built and shipped production systems end-to-end\nExperience at a human data AI company or working directly with frontier AI labs\nIntegrated full-stack + distributed systems depth (not isolated frontend or backend only)\nStable tenure with high-impact delivery in fast-paced environments\nExcited to build the data infrastructure that powers how the world’s best AI models learn\nPay: $180,000.00 - $220,000.00 per year\nBenefits:\nVisa sponsorship\nWork Location: In person","datePosted":"2026-08-06T15:43:00.215Z","dateModified":"2026-08-06T15:43:00.215Z","hiringOrganization":{"@type":"Organization","name":"Crooter","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"0674d55ef341d2891370b941"},"url":"https://jobsearcher.com/jobs/0674d55ef341d2891370b941"}}