{"schemaVersion":"jobsearcher.job.v1","id":"e2647b5048e9e007bd3b23d5","url":"https://jobsearcher.com/jobs/e2647b5048e9e007bd3b23d5","canonicalUrl":"https://jobsearcher.com/jobs/e2647b5048e9e007bd3b23d5","title":"Senior Frontend Developer","description":"4+ years of frontend engineering experience Portfolio of complex web apps US work authorization or O-1 visa eligibility Product sense and design intuition High autonomy and low ego Own the frontend of our core product - shipping interfaces that feel instant, intuitive, and polished even when the underlying work is complex. This isn't a role where you wait for designs to land in your queue: you'll make product and design calls yourself, prototype quickly, and execute without perfect specs. Sometimes you'll implement designs; other times you'll create them. The expectation is craft - not just working code, but software that feels good: loading states, empty states, error messages, keyboard shortcuts, and the thousand small decisions that separate a polished product from a functional one. About the Company We're a 12-14 person AI-native team building a personal AI assistant for knowledge workers - something closer to \"Cursor for knowledge work\" than a chatbot. The system understands user context, curates and prioritises work, operates in the background, and delivers supervision-ready output rather than waiting to be prompted. We've raised $30M in seed funding from Spark Capital, Felicis, and Y Combinator - one of the largest seed rounds in YC history. The team is composed of former founders, CTOs, and high-agency builders, where high ownership is the norm, not the exception. What You'll Bring 4+ years of frontend engineering experience A portfolio of complex web apps you've shipped - production systems real users depend on, not side projects Deep React fluency: you understand state management, when to memoize, how callbacks work, and the component lifecycle, and you write clean, reusable components. You spot prop drilling before it becomes a problem and know when to lift into context or a dedicated state store Full-stack comfort: owning a feature end to end - DB migration, backend route, frontend fetch, and UI - without a separate engineer for each layer Performance instinct: you know when to cache, when to refetch stale data, and how to optimistically update the UI, and you notice duplicated network requests Product sense and design intuition: take a rough product direction, sketch an interaction, and ship something that feels right without waiting for a finished spec High autonomy, low ego: you ship, gather feedback, and iterate, and you unblock yourself US work authorisation or O-1 eligibility, and based in the Bay Area or willing to relocate before starting (European candidates may be considered for O-1 visa sponsorship) Bonus Points Experience with multiplayer apps (Y.js, Automerge, CRDTs) Building interfaces for LLM-based tools - streaming responses, handling uncertainty, progressive disclosure Local-first architectures (service workers, sync strategies) A design background or strong visual sense Previously a founding frontend engineer who established standards from scratch Interview Process 1-minute Loom - tell us who you are and why this role. 15-minute intro call - align on location, motivation, and logistics. System design interview - a deep dive into how you think and architect systems, walking through a real product problem together. Final conversation - your questions answered and the work trial scoped. Paid work trial - in person, a few days to two weeks, working on a real project to see how we work together. What's on Offer Meaningful early-stage equityComprehensive health and dental coverage 401(k) Gym budget and daily lunch meaningful early-stage equity health dental 401(k) lunch About Wordware We're a 12-14 person AI-native team in San Francisco building a personal AI assistant for knowledge workers - something closer to \"Cursor for knowledge work\" than a chatbot. The system understands user context, curates and prioritises work, operates in the background, and delivers supervision-ready output rather than waiting to be prompted.We've raised $30M in seed funding from Spark Capital, Felicis, and Y Combinator - one of the largest seed rounds in YC history. The team is composed of former founders, CTOs, and high-agency builders. High ownership is the norm, not the exception. J-18808-Ljbffr","company":"Techtree","rawCompany":"techtree","city":"Eastern","state":"KY","isRemote":false,"isActive":false,"createdAt":"2026-10-22T13:03:46.476Z","occupations":[{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1252.00","title":"Software Developers","slug":"software-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":"Senior Frontend Developer","description":"4+ years of frontend engineering experience Portfolio of complex web apps US work authorization or O-1 visa eligibility Product sense and design intuition High autonomy and low ego Own the frontend of our core product - shipping interfaces that feel instant, intuitive, and polished even when the underlying work is complex. This isn't a role where you wait for designs to land in your queue: you'll make product and design calls yourself, prototype quickly, and execute without perfect specs. Sometimes you'll implement designs; other times you'll create them. The expectation is craft - not just working code, but software that feels good: loading states, empty states, error messages, keyboard shortcuts, and the thousand small decisions that separate a polished product from a functional one. About the Company We're a 12-14 person AI-native team building a personal AI assistant for knowledge workers - something closer to \"Cursor for knowledge work\" than a chatbot. The system understands user context, curates and prioritises work, operates in the background, and delivers supervision-ready output rather than waiting to be prompted. We've raised $30M in seed funding from Spark Capital, Felicis, and Y Combinator - one of the largest seed rounds in YC history. The team is composed of former founders, CTOs, and high-agency builders, where high ownership is the norm, not the exception. What You'll Bring 4+ years of frontend engineering experience A portfolio of complex web apps you've shipped - production systems real users depend on, not side projects Deep React fluency: you understand state management, when to memoize, how callbacks work, and the component lifecycle, and you write clean, reusable components. You spot prop drilling before it becomes a problem and know when to lift into context or a dedicated state store Full-stack comfort: owning a feature end to end - DB migration, backend route, frontend fetch, and UI - without a separate engineer for each layer Performance instinct: you know when to cache, when to refetch stale data, and how to optimistically update the UI, and you notice duplicated network requests Product sense and design intuition: take a rough product direction, sketch an interaction, and ship something that feels right without waiting for a finished spec High autonomy, low ego: you ship, gather feedback, and iterate, and you unblock yourself US work authorisation or O-1 eligibility, and based in the Bay Area or willing to relocate before starting (European candidates may be considered for O-1 visa sponsorship) Bonus Points Experience with multiplayer apps (Y.js, Automerge, CRDTs) Building interfaces for LLM-based tools - streaming responses, handling uncertainty, progressive disclosure Local-first architectures (service workers, sync strategies) A design background or strong visual sense Previously a founding frontend engineer who established standards from scratch Interview Process 1-minute Loom - tell us who you are and why this role. 15-minute intro call - align on location, motivation, and logistics. System design interview - a deep dive into how you think and architect systems, walking through a real product problem together. Final conversation - your questions answered and the work trial scoped. Paid work trial - in person, a few days to two weeks, working on a real project to see how we work together. What's on Offer Meaningful early-stage equityComprehensive health and dental coverage 401(k) Gym budget and daily lunch meaningful early-stage equity health dental 401(k) lunch About Wordware We're a 12-14 person AI-native team in San Francisco building a personal AI assistant for knowledge workers - something closer to \"Cursor for knowledge work\" than a chatbot. The system understands user context, curates and prioritises work, operates in the background, and delivers supervision-ready output rather than waiting to be prompted.We've raised $30M in seed funding from Spark Capital, Felicis, and Y Combinator - one of the largest seed rounds in YC history. 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