{"schemaVersion":"jobsearcher.job.v1","id":"b0876a6474f35aa26364454d","url":"https://jobsearcher.com/jobs/b0876a6474f35aa26364454d","canonicalUrl":"https://jobsearcher.com/jobs/b0876a6474f35aa26364454d","title":"Founding AI Systems Engineer","description":"We’re hiring a Founding AI Systems Engineer to build the intelligence layer for the leading AI companion for language learning. You’ll own the core AI systems powering personalized conversations for millions of users.\n\nLanguage learning shouldn’t feel like an app — it should feel like talking to someone who knows you: remembers what you struggled with last week, adapts in real time, and responds instantly.\n\nBuilding that means solving hard systems problems at consumer scale: long‑term memory, real‑time speech, sub‑second latency, adaptive dialogue, and personalized content.\n\nAbout Pingo\nPingo helps 3,000,000+ users build fluency through real conversations. Since launching in January 2025, we’ve grown to $6 million ARR with ~50% MoM growth. Backed by YCombinator and top investors, we’re building a small, talent‑dense team obsessed with product quality and engineering rigor.\n\nWhat You’ll Do\nIn one sentence: Build the systems that make Pingo the default way people learn languages.\n\nDefine and own our AI architecture and roadmap, and help build the AI team as we scale.\n\nArchitect memory & personalization — design scalable long‑term memory and retrieval, build a content engine that generates structured, high‑novelty conversations.\n\nImprove speech & conversation intelligence — optimize ASR feedback, turn‑taking, and dialogue flow to make interactions feel natural.\n\nOwn AI evals & experimentation system — build prompt simulations, golden datasets, and regression systems to measure conversation quality.\n\nOptimize real‑time performance — drive sub‑200ms latency and systems that scale efficiently across millions of conversations.\n\nTie intelligence directly to retention — build systems and metrics that measurably improve D1/D7/D30 engagement.\n\nYou Might Be a Great Fit If You\n\nThink in systems. Understand how memory, latency, evaluation, and UX interact.\n\nSet a high engineering bar — nothing ships broken.\n\nStrong product judgement — you build features that feel instant and magical.\n\nRun rigorous experiments and measure tradeoffs across quality, latency, and cost.\n\nDetail‑oriented & obsessed with quality – care deeply about stability, polish, and learning impact.\n\nAbout The Job\n\nIn‑person in SF with founders.\n\n$180k‑250k cash comp + 0.5‑1.5% equity.\n\nHealthcare + meals + Equinox.\n\n#J-18808-Ljbffr","company":"SupportFinity","rawCompany":"supportfinity","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-06-20T03:23:44.812Z","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":"17-2199.00","title":"Engineers, All Other","slug":"engineers-all-other"}],"industries":[{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"541990","title":"All Other Professional, Scientific, and Technical Services","slug":"all-other-professional-scientific-and-technical-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Founding AI Systems Engineer","description":"We’re hiring a Founding AI Systems Engineer to build the intelligence layer for the leading AI companion for language learning. You’ll own the core AI systems powering personalized conversations for millions of users.\n\nLanguage learning shouldn’t feel like an app — it should feel like talking to someone who knows you: remembers what you struggled with last week, adapts in real time, and responds instantly.\n\nBuilding that means solving hard systems problems at consumer scale: long‑term memory, real‑time speech, sub‑second latency, adaptive dialogue, and personalized content.\n\nAbout Pingo\nPingo helps 3,000,000+ users build fluency through real conversations. Since launching in January 2025, we’ve grown to $6 million ARR with ~50% MoM growth. Backed by YCombinator and top investors, we’re building a small, talent‑dense team obsessed with product quality and engineering rigor.\n\nWhat You’ll Do\nIn one sentence: Build the systems that make Pingo the default way people learn languages.\n\nDefine and own our AI architecture and roadmap, and help build the AI team as we scale.\n\nArchitect memory & personalization — design scalable long‑term memory and retrieval, build a content engine that generates structured, high‑novelty conversations.\n\nImprove speech & conversation intelligence — optimize ASR feedback, turn‑taking, and dialogue flow to make interactions feel natural.\n\nOwn AI evals & experimentation system — build prompt simulations, golden datasets, and regression systems to measure conversation quality.\n\nOptimize real‑time performance — drive sub‑200ms latency and systems that scale efficiently across millions of conversations.\n\nTie intelligence directly to retention — build systems and metrics that measurably improve D1/D7/D30 engagement.\n\nYou Might Be a Great Fit If You\n\nThink in systems. Understand how memory, latency, evaluation, and UX interact.\n\nSet a high engineering bar — nothing ships broken.\n\nStrong product judgement — you build features that feel instant and magical.\n\nRun rigorous experiments and measure tradeoffs across quality, latency, and cost.\n\nDetail‑oriented & obsessed with quality – care deeply about stability, polish, and learning impact.\n\nAbout The Job\n\nIn‑person in SF with founders.\n\n$180k‑250k cash comp + 0.5‑1.5% equity.\n\nHealthcare + meals + Equinox.\n\n#J-18808-Ljbffr","datePosted":"2026-06-20T03:23:44.812Z","dateModified":"2026-06-20T03:23:44.812Z","hiringOrganization":{"@type":"Organization","name":"SupportFinity","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"b0876a6474f35aa26364454d"},"url":"https://jobsearcher.com/jobs/b0876a6474f35aa26364454d"}}