Senior Frontend Engineer – Chat SDK Lead

Job Title: Frontend Developer

Location: Jaipur

Experience: 5–10 Years

Must Have skills: React 19 (Latest version), Shad CN, 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. Robust expertise in Type Script, 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 Abort Controller lifecycle and cancellation patterns.

Experience with real-time state management using React Query, use Reducer, 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 Tan Stack React Query. Exposure to Open AI 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

Type Script 5.7 | React 19 | tsdown | Turborepo | Biome | Storybook 10 | Tan Stack 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.

📌 Senior Frontend Engineer – Chat Sdk Lead (Rajasthan)
🏢 Celebal Technologies
📍 Rajasthan