Senior Frontend Developer– Chat SDK Lead

Senior Frontend Engineer – Chat SDK LeadJob Title: Frontend DeveloperLocation: JaipurExperience: 5–10 YearsRole SummaryWe are looking for a Senior Frontend Engineer – Chat SDK Lead to own a React-based component library powering AI chat interfaces across the organization. The role involves technical ownership of the SDK, release management, real-time streaming capabilities, testing, and direct collaboration with consumer engineering teams.Mandatory Skills5+ years of hands-on experience building and shipping React component libraries or SDKs consumed by multiple teams.Strong expertise in TypeScript, including generics, discriminated unions, strict mode, and declaration emit.Strong experience with React and modern frontend architecture.Hands-on experience with SSE/streaming protocols and real-time application development.Strong understanding of AbortController lifecycle and cancellation patterns.Experience with real-time state management using React Query, useReducer, Context, or equivalent approaches.Experience designing and maintaining public APIs/component libraries with a focus on backward compatibility and extensibility.Hands-on experience with release management, including Semantic Versioning (semver), changelogs, breaking-change management, and monorepo tooling.Experience with Turborepo, Changesets, or equivalent monorepo/release management tools.Ability to lead technical discussions with product/engineering teams, negotiate API contracts and technical trade-offs, and prepare migration documentation.Strong experience with automated testing for complex frontend/public API surfaces.Preferred SkillsExperience building AI/LLM chat interfaces, including streaming completions and tool-call rendering.Experience with React 19, including Server Component boundaries and "use client" patterns.Experience with multi-model/provider integrations or AI gateway abstractions.Experience with Storybook, Biome and tsdown.Experience with TanStack React Query.Exposure to OpenAI SSE and AG-UI/custom streaming events.Experience with local-first storage and client-side data eviction strategies.Experience with Portkey AI Gateway or similar multi-provider abstraction layers.Tech StackTypeScript 5.7 | React 19 | tsdown | Turborepo | Biome | Storybook 10 | TanStack React Query | SSE | Changesets | Private npm RegistryKey ResponsibilitiesOwn the technical direction and architecture of the Chat SDK.Design and maintain streaming interfaces and real-time state management.Handle complex streaming scenarios including tool-call correlation and provider-specific events.Own SDK release lifecycle, versioning and breaking-change coordination.Establish and maintain comprehensive automated test coverage.Work directly with consumer teams on integration, troubleshooting, API contracts and extensibility.Create migration guides and technical documentation for SDK consumers.