{"id":1252080,"url":"https://alion.io/job/celebal-tech-senior-frontend-engineer","title":"Senior Frontend Engineer","company":{"id":2810284,"name":"Celebal Tech","domain":"celebaltech.com","url":"https://alion.io/company/celebaltech","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":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Jaipur, India","India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"React Query","optional":false},{"name":"React.js","optional":false},{"name":"shadcn/ui","optional":false},{"name":"State 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React-based component library powering AI chat interfaces across the organization.\n\nThe role involves technical ownership of the SDK, release management, real-time streaming capabilities, testing, and direct collaboration with consumer engineering teams.\n\nMandatory Skills :\n\n- 5+ years of hands-on experience building and shipping React component libraries or SDKs consumed by multiple teams.\n\n- Strong expertise in TypeScript, including generics, discriminated unions, strict mode, and declaration emit.\n\n- Strong experience with React and modern frontend architecture.\n\n- Hands-on experience with SSE/streaming protocols and real-time application development.\n\n- Strong understanding of AbortController lifecycle and cancellation patterns.\n\n- Experience with real-time state management using React Query, useReducer, Context, or equivalent approaches.\n\n- Experience designing and maintaining public APIs/component libraries with a focus on backward compatibility and extensibility.\n\n- Hands-on experience with release management, including Semantic Versioning (semver), changelogs, breaking-change management, and monorepo tooling.\n\n- Experience with Turborepo, Changesets, or equivalent monorepo/release management tools.\n\n- Ability to lead technical discussions with product/engineering teams, negotiate API contracts and technical trade-offs, and prepare migration documentation.\n\n- Strong experience with automated testing for complex frontend/public API surfaces.\n\nPreferred Skills :\n\n- Experience building AI/LLM chat interfaces, including streaming completions and tool-call rendering.\n\n- Experience with React 19, including Server Component boundaries and \"use client\" patterns.\n\n- Experience with multi-model/provider integrations or AI gateway abstractions.\n\n- Experience with Storybook, Biome and tsdown.\n\n- Experience with TanStack React Query.\n\n- Exposure to OpenAI SSE and AG-UI/custom streaming events.\n\n- Experience with local-first storage and client-side data eviction strategies.\n\n- Experience with Portkey AI Gateway or similar multi-provider abstraction layers.\n\nTech Stack :\n\n- TypeScript 5.7, React 19, tsdown, Turborepo, Biome, Storybook 10, TanStack React Query, SSE, Changesets, Private npm Registry.\n\nKey Responsibilities :\n\n- Own the technical direction and architecture of the Chat SDK.\n\n- Design and maintain streaming interfaces and real-time state management.\n\n- Handle complex streaming scenarios including tool-call correlation and provider-specific events.\n\n- Own SDK release lifecycle, versioning and breaking-change coordination.\n\n- Establish and maintain comprehensive automated test coverage.\n\n- Work directly with consumer teams on integration, troubleshooting, API contracts and extensibility.\n\n- Create migration guides and technical documentation for SDK consumers.\nSkills\nSDK, Frontend Architecture, UI, React.js, Tailwind, TypeScript, 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