Frontend Engineer
Hi, I'm Bhavsagar
Frontend Engineer with 3.5+ years building production-grade web and mobile apps across SaaS, PWAs, admin dashboards, and AI-powered products with React, Next.js, TypeScript, and React Native.
3.5+ yrs
Experience
Architecture
Focus
Performance-first UI
Specialty
What I build
Production-grade React systems, mobile apps, admin dashboards, and AI-integrated user experiences.
Frontend Engineer with 3.5+ years building production-grade web and mobile applications with React.js, Next.js, TypeScript, and React Native.
Experienced leading frontend development across SaaS platforms, mobile apps, admin dashboards, PWAs, and AI-powered products — collaborating with backend engineers on REST and GraphQL API design, authentication, PostgreSQL schema discussions, and end-to-end delivery in fast-paced startup environments.
At Prospello, I lead frontend delivery across LMS, healthcare, fitness, and React Native products — shipping AI features (RAG pipelines, streaming, Whisper voice), real-time video infrastructure, and measurable wins: +35% LCP, -70% crash rate, and -50% redundant API calls.
I've worked on large-scale EdTech at Allen Digital (millions of users) and full-stack MERN delivery at GeeksForGeeks.
Frontend-first and deep in React, Next.js, and TypeScript — when a feature needs an API or a deploy fix, I can handle that too.
Experience
Leading frontend delivery across SaaS, EdTech, MERN products, and AI-powered platforms.
- Translate product requirements and stakeholder discussions into production-ready UX with React, Next.js, TypeScript, and React Native — often without dedicated designers.
- Collaborate closely with the backend engineer on REST and GraphQL API contract design, authentication workflows, PostgreSQL schema discussions, feature planning, and end-to-end delivery across multiple SaaS products.
- Implemented Next.js SSR/SSG/ISR with dynamic imports and route-level code splitting — improved LCP by 35%, boosted SEO, and reduced initial JavaScript bundle size.
- Built cross-platform React Native health app (Expo → Native CLI) with activity tracking, nutrition, care-team flows, and video streaming — unblocked Zoom Video SDK and reduced crash rate by 70%.
- Built real-time video classroom infrastructure with LiveKit and Zoom Video SDK — session scheduling, meeting orchestration, and interactive classrooms, cutting instructor setup time by 60%.
- Engineered Redux Toolkit + TanStack Query with optimistic updates, background refetching, and smart caching — reduced redundant API calls by 50% across web and mobile.
- Shipped production AI features: RAG Q&A, quiz generation, PDF summarisation, Whisper voice input, and streaming AI experiences via Groq, Cohere, and Vercel AI SDK.
Technical Focus
React ecosystem, TypeScript, state management, AI integration, and performance-first architecture.
Daily drivers
6 technologies
Core
7 technologies
State & Data
5 technologies
Backend & Infra
12 technologies
AI & Testing
8 technologies
Education
Formal foundation strengthened through years of production React engineering.
Selected Projects
End-to-end applications I've designed, architected, and shipped.
Built the complete frontend and backend of a full-stack AI-powered LMS on Next.js 15 App Router — 6 production AI modules: streaming chat, RAG document Q&A, quiz generation, lesson summarisation, smart notes, and Whisper voice input. Engineered a custom RAG pipeline (PDF chunking → Cohere embeddings → cosine similarity → Groq responses) with Prisma + PostgreSQL on Vercel.
Full-stack fractional real estate investment app in React Native — onboarding, KYC flows, portfolio tracking, investment screens, real-time charts, and Firebase push notifications. Integrated Whisper voice search, custom SSE parsing for word-by-word LLM streaming in React Native, and real-time investment insights via Groq + Cohere.
Get in touch
Open to frontend engineer roles React, Next.js, TypeScript, and React Native.
Prefer async? Drop a line at bhavsagar92@gmail.com