{"id":59181,"url":"https://alion.io/job/bystadium-senior-javascript-developer-react","title":"Senior Javascript Developer - React","company":{"id":17224,"name":"Bystadium","domain":"bystadium.com","url":"https://alion.io/company/bystadium","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":86,"open_postings":9,"ghost_share":0,"stale_share":0.556,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["IN"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Babel","optional":false},{"name":"Cypress","optional":false},{"name":"JavaScript","optional":false},{"name":"Jest","optional":false},{"name":"Lighthouse","optional":false},{"name":"Next.js","optional":false},{"name":"Playwright","optional":false},{"name":"React.js","optional":false},{"name":"Redux","optional":false},{"name":"Rest API","optional":false},{"name":"State Management","optional":false},{"name":"TypeScript","optional":false},{"name":"Webpack","optional":false}],"status":"live","first_seen_at":"2026-08-12T00:00:00Z","employer_posted_date":"2026-08-12","last_verified_at":"2026-10-17T17:02:49Z","board_verified":true,"closed_at":null,"days_open":66,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":66},"description":"As a Senior Frontend Developer (React.js / Next.js), you will:\nArchitect and build robust, scalable web applications using React.js and Next.js that make our platform easy and enjoyable to use.\nOwn significant features end to end - from technical design through rollout - and set the standards others build against.\nDrive frontend performance: server-side rendering, static generation, bundle size, Core Web Vitals, and caching strategy.\nCollaborate with cross-functional teams to design and implement new features that enhance user engagement.\nRaise the quality bar through code reviews, refactoring, testing practices, and pragmatic technical debt reduction.\nMentor mid-level and junior engineers, and help grow the team’s overall frontend capability.\nStay ahead of emerging technologies and best practices in web development to keep our applications cutting-edge.\nRequirements\nPrimary Requirements\n5+ years of professional experience building production web applications with JavaScript.\n5+ years of professional experience with React.js.\nHands-on production experience with Next.js, including server-side rendering, static generation, and routing.\nDeep understanding of React concepts: functional components, hooks, state management, context, memoization, rendering behavior, and lifecycle.\nStrong command of ES6+, TypeScript, HTML, CSS, and a state management library (Redux or similar).\nProven experience designing and integrating REST-based third-party APIs.\nDemonstrated ownership of frontend performance optimization, debugging, and browser testing.\nExperience with modern build tooling (Webpack, Babel, or equivalent) and frontend deployment pipelines.\nTrack record of leading code reviews, refactoring legacy code, and improving engineering standards.\nStrong problem-solving skills with the ability to analyze, clarify, and scope requirements independently.\nHigh attention to detail and strong visualization of UI/UX.\nPreferred Requirements\nExperience using Google Lighthouse and PageSpeed Insights to drive measurable frontend performance gains.\nKnowledge of SEO best practices for server-rendered web applications.\nExperience with component libraries, design systems, and monorepo tooling.\nFamiliarity with automated testing (Jest, React Testing Library, Playwright/Cypress).\nExperience with feature flagging and progressive rollout practices.\nExperience working with asynchronous or distributed teams.\nPrior experience mentoring developers and leading technical initiatives.\nSoft Skills & Mindset\nClear communication and the confidence to challenge and be challenged.\nCurious, proactive, and generous with knowledge.\nAbility to work in a fast-paced, collaborative product environment.\nStrong desire to build real products that solve real problems.\nBenefits\nAt Stadium, your input matters, and we believe in creating a culture where innovation is encouraged. Join us in crafting the future of group gifting and recognition. 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