Frontend Engineer

Hi, I'm Bhavsagar

Frontend Engineer with 3.5+ years building scalable, high-performance applications, App Router, Server Components, advanced TypeScript patterns, complex state management, and Core Web Vitals optimization across Next.js and React Native.

Bhavsagar, Frontend Engineer
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3.5+ yrs

Experience

React Architecture

Focus

TypeScript + Performance

Specialty

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About

What I build

Scalable React systems, complex frontend architectures, and production-grade TypeScript codebases.

I'm a frontend engineer focused on building robust, scalable, and maintainable UI systems with React and TypeScript.

I specialize in modern React architecture App Router, Server Components, Server Actions, advanced TypeScript patterns, complex state management (Redux Toolkit + TanStack Query), and deep performance optimization (Core Web Vitals, bundle analysis, rendering strategies).

At Prospello, I architected the frontend for a multi-role SaaS LMS, shipped multiple production AI features (RAG pipelines, streaming, voice interactions), led a React Native migration (Expo → Native CLI), and delivered measurable wins: +35% LCP, -70% crash rate, and -50% redundant API calls.

I've worked on large-scale EdTech platforms serving millions of users (Allen Digital) and production e-commerce systems (GeeksForGeeks).

Frontend-first deep in React, Next.js, and TypeScript. When a feature needs an API or a deploy fix, I can handle that too.

Work

Experience

Production ownership across complex SaaS, EdTech, and real-time applications.

  • Architected a multi-role Next.js 14 SaaS LMS using App Router, SSR, SSG, and ISR with complex state management and real-time capabilities.
  • Shipped multiple production AI features (RAG pipelines, quiz generation, voice interactions) using Groq, Cohere, and Vercel AI SDK adopted by 100% of active users within two weeks.
  • Led React Native migration from Expo to Native CLI, enabling native SDK integrations and reducing crash rate by 70%.
  • Improved LCP by 35% through SSR/ISR, code splitting, and performance optimization techniques.
  • Implemented real-time video classroom infrastructure using LiveKit and Zoom SDKs cutting instructor setup time by 60%.
  • Engineered scalable state management with Redux Toolkit and TanStack Query, reducing redundant API calls by 50%.

Skills

Technical Focus

Modern React ecosystem, TypeScript mastery, and performance-first architecture.

Daily drivers

7 technologies

ReactReact
Next.jsNext.js
TypeScriptTypeScript
ReactReact Native
CursorCursor
OpenAICodex
ClaudeClaude

Core

5 technologies

ReactReact.js
Next.jsNext.js
TypeScriptTypeScript
Tailwind CSSTailwind CSS
ReactReact Native

State & Data

3 technologies

ReduxRedux Toolkit
React QueryTanStack Query
Socket.ioWebSockets

Backend & Infra

6 technologies

Node.jsNode.js
PostgreSQLPostgreSQL
PrismaPrisma
DockerDocker
FirebaseFirebase
RenderRender

AI & Testing

4 technologies

GroqGroq
OpenAIOpenAI
CohereCohere
PlaywrightPlaywright
Education

Education

Formal foundation strengthened through years of production React engineering.

Projects

Selected Projects

End-to-end applications I've designed, architected, and shipped.

Live
GitHubSource

AI LMS Tutor

Owned the complete Next.js 15 stack 6 AI modules in production: streaming chat, RAG document Q&A, quiz generation, lesson summarisation, smart notes, and Whisper voice input. Deployed on Vercel with PostgreSQL and Prisma.

Next.js
TypeScript
Groq
Cohere
PostgreSQL
Prisma
Live
GitHubSource

PaySense

Full-stack fintech dashboard merchant login, transaction analytics, payment links, settlement tracking, webhook/API key config, and an AI assistant for payment intelligence. Role-based access, filtering, pagination, and responsive charts.

React
TypeScript
Node.js
PostgreSQL
BrickShare
GitHubSource

BrickShare

React Native fractional real estate app onboarding, KYC, portfolio tracking, and live charts. Shipped AI on the frontend: streaming investment insights, Whisper voice search, and custom SSE parsing for word-by-word output.

React Native
Expo
Node.js
PostgreSQL
Live
GitHubSource

MediCore

Healthcare SaaS dashboard auth, clinical data flows, and UX decisions modelled on how a real operations tool behaves in production, not static mock screens.

React
TypeScript
Tailwind CSS
REST APIs
Live
GitHubSource

LMS Platform

MERN-stack LMS course browse, purchase, and consumption flows. Owned frontend architecture, JWT auth integration, and the full user journey from catalog to completion.

React
Node.js
Express.js
MongoDB
Healthcare App

Healthcare App

Cross-platform React Native health app in production activity tracking, nutrition, video consultations, and care-team workflows. Led Expo → Native CLI migration, Firebase auth, push notifications, and real-time comms.

React Native
TypeScript
Firebase
Node.js
Live
GitHubSource

Bitscale

Figma-to-production Next.js build layout fidelity, responsive breakpoints, and reusable component architecture across devices.

Next.js
React
TypeScript
Tailwind CSS
Contact

Get in touch

Open to frontend engineer roles React, Next.js, TypeScript, and React Native.

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Prefer async? Drop a line at bhavsagar92@gmail.com

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