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Profile

Pratosh B

Founding Product Engineer

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Fullstack · Frontend · AI engineer. I love building, shipping, and figuring out the rest along the way.

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Experiences

SparrowDesk (SurveySparrow)
SparrowDesk (SurveySparrow)
Founding Engineer
2024 - Present
Chennai, IN

Founding

Role

7+

Product Surfaces

Chat + Email

AI Channels

2024

Since

  • Joined as the founding frontend engineer from day zero
  • Established the entire frontend foundation: TypeScript monorepo, Rspack/SWC bundler, state management, and tooling
  • Shipped every major product surface end-to-end — tickets, KB, workflows, inbox, live chat, contacts, and the chat widget
  • Built the AI agent platform end-to-end — copilot UI, streaming, and resolution flow
  • Extended the AI agent to the email channel with autonomous resolution and handoff
  • Built multiple third-party integrations end-to-end
  • Authored engineering convention docs governing AI-assisted development across the team
ReactTypeScriptNode.jsVercel AI SDKRspackSocket.ioPostgreSQLRedis
SurveySparrow
SurveySparrow
Software Engineering Intern
2023 - 2024
Chennai, IN

40+

Components

4+

Products Powered

UI + AI

Focus

2023-24

Term

  • Twigs: Contributed to SurveySparrow's open-source React component library powering 4+ B2B SaaS products — building and maintaining 40+ accessible, themeable, production-grade components
  • Datagrid R&D: Led early research on a high-performance datagrid for millions of rows — evaluated AG Grid, SlickGrid, and TanStack Table, prototyping row grouping, pivoting, and virtual scrolling
  • Wings AI: Kickstarted the AI module — scoped, built, and shipped multiple AI-powered features to production, now used by thousands of end users
ReactTypeScriptComponent LibraryTanStack TableAI

Projects

Synth preview

Synth

Live

Real-time multiplayer whiteboard with conflict-free replicated data types (CRDTs) for seamless collaboration.

Yjs CRDT
WebSocket
Canvas API
Zustand
Shelf preview

Shelf

Live

Minimal app to track books, reading progress, and personal notes with offline-first sync.

IndexedDB
stat-o-stat preview

stat-o-stat

Live

Spotify-linked dashboard surfacing your most-streamed artists and tracks, with AI-generated albums shaped by your listening history.

Spotify Web API
OpenAI

GitHub Activity

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Open Source Contributions

Skills & Technologies

React
Next
TypeScript
JavaScript
Redux
Tanstack Query
Rspack
Tailwind
Node
Express
Socket.io
Sequelize
PostgreSQL
Redis
DynamoDB
OpenSearch
AWS Lambda
Vercel AI SDK
Sentry
New Relic
PostHog
Git
Github
Docker
Figma
Linux

"Simplicity is the ultimatesophistication."

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