{"schemaVersion":"jobsearcher.job.v1","id":"fe5bd29cbe47467b0eeadcbe","url":"https://jobsearcher.com/jobs/fe5bd29cbe47467b0eeadcbe","canonicalUrl":"https://jobsearcher.com/jobs/fe5bd29cbe47467b0eeadcbe","title":"Frontend Software Engineer | React | Next.js | TypeScript | Frontier AI Startup","description":"Frontend Software Engineer | React | Next.js | TypeScript | Frontier AI Startup Must Have Startup Experience & CS foundation from a top programmeSalary: $180,000 - $225,000 + meaningful equityLocation: San Francisco, CA (5 days onsite)Eligibility: Must be a US or Canadian resident.Required: React/Next.js, TypeScript, zero-to-one product delivery, VC-backed startup experience, Strong CS foundation from a top programme - (Non-Negotiable)🚨 Non-Negotiables - Please only apply if you have ALL of the following 🚨Core technologies:Proficient in TypeScript (this is tested in the technical screen)Production experience building UIs with React and Next.jsComfortable building fast, responsive interfaces on a data-intensive productStrong CS foundation from a top programmeEnvironment:Strong experience in a fast-moving, VC-backed startup or scale-upShipped zero-to-one product features end-to-end with visible business impactAble to own features end-to-end and iterate fast with high autonomyComfortable working onsite 5 days a week in San FranciscoKey skills:3 to 6 years of frontend engineering experienceStrong grounding in modern frontend architecture and performanceAbility to build polished, intuitive interfaces that thousands of users touch dailyHigh-level written and spoken English for a sharp, collaborative teamRole OverviewWe're partnered exclusively with one of the fastest-growing AI companies in San Francisco. Seriously well-funded, moving at real pace, and hiring hard as they scale. This is a chance to join early and own a huge amount from day one.This is a hands-on frontend role for someone who wants massive ownership. You'll build cutting-edge, intuitive interfaces on a data-rich product, shipping to production daily and working shoulder to shoulder with engineers, researchers and product to turn ideas into polished, real-world features.Key ResponsibilitiesShip polished, high-performance UI features used by thousands of people every dayBuild fast, responsive interfaces on a complex, data-heavy productDesign and build interfaces that surface complex, AI-driven solutions to customersIterate rapidly with the wider team to deploy new features fastStay ahead of modern frontend tooling and raise the bar on the productNice to HaveExperience building data-heavy or ML-powered user interfaces at production scaleFamiliarity with TailwindCSS, Node.js, tRPC, PostgreSQL, or AWSTrack record of high personal achievement in fast-growing environmentsIf you tick every box, thrive in a high-ownership startup, and can be onsite in San Francisco, we'd love to hear from you.","company":"Optimal","rawCompany":"optimal","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-09-27T09:52:41.651Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1255.00","title":"Web and Digital Interface Designers","slug":"web-and-digital-interface-designers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Frontend Software Engineer | React | Next.js | TypeScript | Frontier AI Startup","description":"Frontend Software Engineer | React | Next.js | TypeScript | Frontier AI Startup Must Have Startup Experience & CS foundation from a top programmeSalary: $180,000 - $225,000 + meaningful equityLocation: San Francisco, CA (5 days onsite)Eligibility: Must be a US or Canadian resident.Required: React/Next.js, TypeScript, zero-to-one product delivery, VC-backed startup experience, Strong CS foundation from a top programme - (Non-Negotiable)🚨 Non-Negotiables - Please only apply if you have ALL of the following 🚨Core technologies:Proficient in TypeScript (this is tested in the technical screen)Production experience building UIs with React and Next.jsComfortable building fast, responsive interfaces on a data-intensive productStrong CS foundation from a top programmeEnvironment:Strong experience in a fast-moving, VC-backed startup or scale-upShipped zero-to-one product features end-to-end with visible business impactAble to own features end-to-end and iterate fast with high autonomyComfortable working onsite 5 days a week in San FranciscoKey skills:3 to 6 years of frontend engineering experienceStrong grounding in modern frontend architecture and performanceAbility to build polished, intuitive interfaces that thousands of users touch dailyHigh-level written and spoken English for a sharp, collaborative teamRole OverviewWe're partnered exclusively with one of the fastest-growing AI companies in San Francisco. Seriously well-funded, moving at real pace, and hiring hard as they scale. This is a chance to join early and own a huge amount from day one.This is a hands-on frontend role for someone who wants massive ownership. You'll build cutting-edge, intuitive interfaces on a data-rich product, shipping to production daily and working shoulder to shoulder with engineers, researchers and product to turn ideas into polished, real-world features.Key ResponsibilitiesShip polished, high-performance UI features used by thousands of people every dayBuild fast, responsive interfaces on a complex, data-heavy productDesign and build interfaces that surface complex, AI-driven solutions to customersIterate rapidly with the wider team to deploy new features fastStay ahead of modern frontend tooling and raise the bar on the productNice to HaveExperience building data-heavy or ML-powered user interfaces at production scaleFamiliarity with TailwindCSS, Node.js, tRPC, PostgreSQL, or AWSTrack record of high personal achievement in fast-growing environmentsIf you tick every box, thrive in a high-ownership startup, and can be onsite in San Francisco, we'd love to hear from you.","datePosted":"2026-09-27T09:52:41.651Z","dateModified":"2026-09-27T09:52:41.651Z","hiringOrganization":{"@type":"Organization","name":"Optimal","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"fe5bd29cbe47467b0eeadcbe"},"url":"https://jobsearcher.com/jobs/fe5bd29cbe47467b0eeadcbe"}}