Senior Frontend Engineer
First seen by Alion on Sep 16, 2026.
Job Title : Senior Frontend Engineer - Chat SDK Lead.
Job Title : Frontend Developer.
Location : Jaipur.
Must Have skills : React 19 (Latest version), ShadCN, Tailwind CSS, Typescript, Tanstack Query.
Role Summary :
We 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 Skills :
- 5+ 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 Skills :
- Experience 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 Stack :
- TypeScript 5.7, React 19, tsdown, Turborepo, Biome, Storybook 10, TanStack React Query, SSE, Changesets, Private npm Registry.
Key Responsibilities :
- Own 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.
Skills
SDK, Frontend Architecture, UI, React.js, Tailwind, TypeScript, Redux