Full Stack Developer & Software Engineer

I build websites that feel as good as they perform.

I'm Sanjay Kumar, a freelance Full Stack Web Developer and Software Engineer based in India. I specialize in the MERN stack, React, JavaScript, Node.js, and Django, collaborating with founders and engineering teams to ship fast, search-engine-friendly, and accessible websites.

2+
Years building
10+
Projects worked
Sanjay Kumar - Senior Full Stack Web Developer & Software Engineer
Available for projects · Jul 2026
About

A developer who treats the browser like a craft.

I started writing HTML at 17, mostly to fix a broken school website nobody else wanted to touch. Five years and forty-something projects later, I still feel the same small thrill when a page snaps into place — clean markup, semantic elements, real type, and no layout shift.

Today, I work as a freelance Full Stack Developer and Software Engineer. On the frontend, I build fast, interactive websites using React, Next.js, and responsive JavaScript, focusing on user experience and Core Web Vitals. On the backend, I leverage Node.js, Django, and PostgreSQL REST APIs to build robust, secure systems.

My near-term goal is simple: keep raising the bar on every web development project, partner with founders who care about the details, and contribute more open-source work along the way.

Toolkit

Languages, frameworks, and the boring bits in between.

A practical stack I've shipped to production — not a list of things I tried once on a weekend.

  • HTML
  • CSS
  • JavaScript
  • React
  • Next.js
  • Python
  • Django
  • Git & GitHub
  • Responsive Design
  • MySQL
  • PostgreSQL
  • REST APIs
Selected Work

A few projects I'm proud of.

Have something similar in mind? →
Eventify — College Event Platform - Portfolio Project by Sanjay Kumar, MERN Stack / React Developer
ReactNodeMongoDB

Eventify — College Event Platform

A complete event registration and management platform for college events. Clean onboarding, role-aware dashboards, and a fast registration flow.

Velvet Vault — Luxury Salon - Portfolio Project by Sanjay Kumar, MERN Stack / React Developer
Next.jsTailwindFramer Motion

Velvet Vault — Luxury Salon

Editorial dark-mode marketing site for a high-end grooming atelier, with rich typography, gallery, and an integrated booking flow.

SwasthyaSakhi — Women's Health - Portfolio Project by Sanjay Kumar, MERN Stack / React Developer
ReactDjangoPostgreSQL

SwasthyaSakhi — Women's Health

An NHM-supported women's health companion: cycle tracking, daily wellness actions, PHC and vaccine info, multilingual UI.

Services

Ways we can work together.

Engagements run from a single landing page to a multi-month build. Every project starts with a 30-minute call to make sure we're a fit.

01

Portfolio Websites

Personal sites for designers, founders, and creatives that read as confidently as the work itself.

02

Landing Pages

High-conversion landing pages built around a single message, shipped in days, not weeks.

03

Business Websites

Multi-page marketing sites with a content model your team can maintain without a developer.

04

Frontend Development

Pixel-accurate React or Next.js frontends from Figma — typed, accessible, performance-budgeted.

05

Website Maintenance

Ongoing support: bug fixes, content updates, performance audits, and dependency upgrades.

06

API & Backend Work

Django and Node REST APIs, auth flows, and database design for products that need a real backend.

Contact

Let's build something worth visiting.

Tell me a bit about the project and your timeline. I usually reply within a working day.