{"schemaVersion":"jobsearcher.job.v1","id":"e016833dd0e322027a640621","url":"https://jobsearcher.com/jobs/e016833dd0e322027a640621","canonicalUrl":"https://jobsearcher.com/jobs/e016833dd0e322027a640621","title":"Senior React Engineer","description":"A world-leading technology company specializing in innovative payment solutions is seeking a talented engineer to join their team. They build the critical systems that power how millions of guests make payments, impacting checkout experiences and booking flows globally.The Role Build and ship new features for guest-facing checkout and payment systems. Modernize existing large and mature frontend codebases, including migrating legacy state-management patterns. Take payment features from initial design through to successful launch on high-traffic consumer surfaces. Ensure a high standard of accessibility (WCAG 2.1 AA) for all shipped user interfaces.What You'll Need 7-10 years of experience building production web frontends using React and TypeScript. Deep expertise with Redux, including experience refactoring or migrating large, established Redux codebases. Strong understanding of CSS and layout fundamentals, with a proven track record of delivering accessible UI that meets WCAG 2.1 AA standards. Ability to understand backend code (Java/Kotlin) to trace features, though day-to-day backend coding is not required. Proven ability to quickly adapt to and understand large, unfamiliar codebases. Excellent communication skills for a distributed and asynchronous team environment.What's On Offer Opportunity to impact millions of users through high-traffic payment systems. Work on modernizing a significant frontend architecture. Contribute to a team that values high accessibility standards.Apply via Haystack today!","company":"Haystack","rawCompany":"haystack","city":"Denver","state":"CO","isRemote":false,"isActive":false,"createdAt":"2026-08-15T09:41:17.372Z","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":"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":"Senior React Engineer","description":"A world-leading technology company specializing in innovative payment solutions is seeking a talented engineer to join their team. They build the critical systems that power how millions of guests make payments, impacting checkout experiences and booking flows globally.The Role Build and ship new features for guest-facing checkout and payment systems. Modernize existing large and mature frontend codebases, including migrating legacy state-management patterns. Take payment features from initial design through to successful launch on high-traffic consumer surfaces. Ensure a high standard of accessibility (WCAG 2.1 AA) for all shipped user interfaces.What You'll Need 7-10 years of experience building production web frontends using React and TypeScript. Deep expertise with Redux, including experience refactoring or migrating large, established Redux codebases. Strong understanding of CSS and layout fundamentals, with a proven track record of delivering accessible UI that meets WCAG 2.1 AA standards. Ability to understand backend code (Java/Kotlin) to trace features, though day-to-day backend coding is not required. Proven ability to quickly adapt to and understand large, unfamiliar codebases. Excellent communication skills for a distributed and asynchronous team environment.What's On Offer Opportunity to impact millions of users through high-traffic payment systems. Work on modernizing a significant frontend architecture. Contribute to a team that values high accessibility standards.Apply via Haystack today!","datePosted":"2026-08-15T09:41:17.372Z","dateModified":"2026-08-15T09:41:17.372Z","hiringOrganization":{"@type":"Organization","name":"Haystack","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Denver","addressRegion":"CO","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"e016833dd0e322027a640621"},"url":"https://jobsearcher.com/jobs/e016833dd0e322027a640621"}}