Senior Frontend Engineer – Chat SDK Lead

n Job Title: Frontend Developer

n Location: Jaipur

n Experience: 5–10 Years

nnRole Summary

nWe 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.

nMandatory Skills

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- 5+ years of hands-on experience building and shipping React component libraries or SDKs consumed by multiple teams.
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- Strong expertise in TypeScript , including generics, discriminated unions, strict mode, and declaration emit.
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- Strong experience with React and modern frontend architecture.
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- Hands-on experience with SSE/streaming protocols and real-time application development.
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- Strong understanding of AbortController lifecycle and cancellation patterns .
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- Experience with real-time state management using React Query, useReducer, Context , or equivalent approaches.
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- Experience designing and maintaining public APIs/component libraries with a focus on backward compatibility and extensibility.
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- Hands-on experience with release management , including Semantic Versioning (semver), changelogs, breaking-change management, and monorepo tooling.
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- Experience with Turborepo, Changesets , or equivalent monorepo/release management tools.
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- Ability to lead technical discussions with product/engineering teams, negotiate API contracts and technical trade-offs,



and prepare migration documentation.
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- Robust experience with automated testing for complex frontend/public API surfaces.
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nPreferred Skills

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- Experience building AI/LLM chat interfaces , including streaming completions and tool-call rendering.
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- Experience with React 19 , including Server Component boundaries and "use client" patterns.
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- Experience with multi-model/provider integrations or AI gateway abstractions.
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- Experience with Storybook, Biome and tsdown .
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- Experience with TanStack React Query .
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- Exposure to OpenAI SSE and AG-UI/custom streaming events .
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- Experience with local-first storage and client-side data eviction strategies.
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- Experience with Portkey AI Gateway or similar multi-provider abstraction layers.
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nTech Stack

n TypeScript 5.7 | React 19 | tsdown | Turborepo | Biome | Storybook 10 | TanStack React Query | SSE | Changesets | Private npm Registry

nKey Responsibilities

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- Own the technical direction and architecture of the Chat SDK .
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- Design and maintain streaming interfaces and real-time state management.
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- Handle complex streaming scenarios including tool-call correlation and provider-specific events.
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- Own SDK release lifecycle, versioning and breaking-change coordination.
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- Establish and maintain comprehensive automated test coverage.
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- Work directly with consumer teams on integration, troubleshooting, API contracts and extensibility.
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- Create migration guides and technical documentation for SDK consumers.
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📌 Senior Frontend Developer- Chat SDK Lead (Jaipur)
🏢 Celebal Technologies
📍 Jaipur