Full-Stack Developer

Darpan
Chakraborty

I architect and ship production web applications, headless content platforms, SaaS products, and AI-powered tools — built with modern JavaScript and cloud-native infrastructure.

Currently at Favfly · Kolkata, India

Explore my work
Expertise

What I Build

Full-Stack Web & Mobile Applications

Production-grade web and mobile applications built with React, Next.js, and React Native. From single-page apps to cross-platform mobile experiences, optimized for performance, SEO, and scalable architecture.

  • React
  • Next.js
  • React Native
  • Node.js
  • Vercel

Headless CMS Architecture

Content platforms that give teams full editorial control. I design content models and connect headless backends to modern frontend so non-technical teams can publish independently.

  • Prismic
  • Contentful
  • ISR
  • GraphQL

SaaS Product Engineering

End-to-end SaaS development with robust data layers, authentication, and payment integration. Scalable architecture designed for growth from day one.

  • Prisma
  • PostgreSQL
  • Auth
  • Stripe

AI-Integrated Solutions

Embedding AI capabilities into web applications — intelligent search, content generation, and automated workflows powered by large language models.

  • OpenAI API
  • Claude API
  • RAG
  • Vector DB
Capabilities

Core Stack

Full-stack across web, mobile, and AI — from product interface to backend logic to automated workflows.

React & Next.js

Full-stack web apps · Performance · SaaS tools

Mobile Development

React Native · PWA · Cross-Platform apps

AI Integration

OpenAI · Claude API · LLM-powered product features

Backend & APIs

Node.js · REST · GraphQL · PostgreSQL · MongoDB

Workflow Automation

n8n · Zapier · Make · HubSpot · webhook pipelines

Content Systems

Headless CMS · Prismic · Contentful

Also comfortable with

  • Animation & interaction design
  • Web performance & Core Web Vitals
  • Database design & data modeling
  • Containerization & deployment pipelines
Career

Experience

Full-Stack Developer

Favfly2022 - Present
Current
  • Architect and ship production web and mobile applications end-to-end, from UI to API to deployment, for business clients across multiple industries.
  • Integrate AI capabilities (OpenAI, Claude API) into client products, including embedded chat assistants and LLM-powered workflow features.
  • Build and maintain headless CMS architectures (Prismic, Contentful) that give non-technical clients full editorial control without developer involvement.
  • Consistently deliver Lighthouse scores of 95–100 through ISR, image optimization, and performance-first engineering practices.
  • Design and automate business workflows using n8n, Zapier, and Make, connecting CRMs, webhooks, and internal tools to reduce manual overhead.
  • React / Next.js
  • Mobile Development
  • AI Integration
  • Headless CMS
  • Workflow Automation
  • Web Performance
Contact

Say Hello

Got a project to build, a product to ship, or just want to talk about the web? The inbox is open.

Write to me