{"id":2812602,"url":"https://alion.io/job/celestial-bi-senior-frontend-engineer-react-next-js","title":"Senior Frontend Engineer – React / Next.js","company":{"id":4446908,"name":"Celestial BI","domain":"celestial.business","url":"https://alion.io/company/celestial-bi","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Sri 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CSS","optional":true}],"status":"live","first_seen_at":"2026-09-22T02:59:52Z","employer_posted_date":null,"last_verified_at":"2026-09-22T02:59:52Z","board_verified":false,"closed_at":null,"days_open":27,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":27},"description":"Senior Frontend Engineer — React / Next.js / AI\n\nCompany: Celestial BI\n\nEmployment Type: Full-Time\n\nExperience: 3+ Years\n\nLocation: Sri Lanka / Remote\n\nSeniority: Senior\n\nAbout Celestial BI\n\nCelestial BI is building modern software products that combine cloud technologies, data, automation, and Artificial Intelligence to solve real-world business problems.\n\nWe are looking for a Senior Frontend Engineer who can take ownership of frontend development and build high-quality, scalable user experiences using modern React and Next.js technologies.\n\nWhat You'll Do\n\nDesign, develop, and maintain modern web applications using React.js and Next.js.\n\nTake ownership of frontend features from requirements through production release.\n\nBuild reusable, scalable, and maintainable UI components.\n\nIntegrate frontend applications with REST APIs and backend services.\n\nImplement responsive and user-friendly interfaces.\n\nWork with state management, routing, authentication, and API integrations.\n\nOptimize application performance and frontend architecture.\n\nDebug and resolve complex frontend issues.\n\nParticipate in code reviews and technical discussions.\n\nWork closely with backend engineers, the project manager, and other team members.\n\nUse AI-powered development tools to improve development speed, code quality, testing, debugging, and documentation.\n\nContribute to AI-powered product features and integrations where required.\n\nRequirements\n\n3+ years of professional frontend development experience.\n\nStrong experience with React.js.\n\nStrong experience with Next.js.\n\nStrong knowledge of JavaScript and/or TypeScript.\n\nStrong understanding of HTML, CSS, responsive design, and modern frontend development.\n\nExperience integrating REST APIs.\n\nExperience with Git and modern development workflows.\n\nGood understanding of frontend architecture and reusable component design.\n\nAbility to independently analyze problems and implement solutions.\n\nStrong debugging and problem-solving skills.\n\nExperience using AI development tools such as Cursor, Claude, ChatGPT, GitHub Copilot, or similar tools.\n\nNice to Have\n\nNext.js App Router.\n\nTypeScript.\n\nTailwind CSS.\n\nReact Query / TanStack Query.\n\nState management libraries.\n\nExperience with AI/LLM APIs.\n\nExperience building AI-powered applications.\n\nAutomated testing.\n\nDocker and CI/CD.\n\nCloud platforms such as AWS or Azure.\n\nWhat We're Looking For\n\nWe are looking for someone who can own frontend development, not simply implement assigned UI tickets.\n\nYou should be comfortable:\n\nMaking technical decisions.\n\nUnderstanding requirements and identifying 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