Available for new projects · Replies within 24h

I Build Web Apps That
Scale & Perform

Full-Stack Developer specialising in React, Next.js, Node.js & TypeScript — turning your ideas into fast, reliable software.

Let's Build Your Product

Free 30-min call · No commitment · Just a conversation

Who I Am

About Me

Open to work

Hi, I'm Nisarg Satasiya — a Full-Stack Developer who turns ideas into fast, reliable web products. I don't just write code; I take ownership of the outcome.

I work across the full stack — building pixel-perfect UIs with React & Next.js and scalable back-ends with Node.js & NestJS, backed by MongoDB, PostgreSQL, and MySQL.

Outside client work, I publish open-source tools used by developers worldwide — because good software should be shared.

Production apps shipped from zero to live

Open-source npm packages with 800+ weekly downloads

Full-stack ownership — UI to database to deployment

Clear communication & on-time delivery, always

Yes, I Want This For My Product

Shipped in weeks, not months

From first call to live product — I move fast without cutting corners. Clients get working software, not endless planning docs.

Open source contributor

I give back to the community that taught me. My tools are used by developers across the world — freely, forever.

Full stack, no handoffs

I own the entire product — from DB schema to deployed UI. No "that's the backend team's problem" on my watch.

Replies in under 24 hours

Every client. Every time. Because slow communication kills projects faster than bad code.

What I Know

My Tech Stack

React

Next.js

TypeScript

JavaScript

Node.js

Express.js

NestJS

MongoDB

PostgreSQL

MySQL

AWS

Azure

GitHub

What I Do

Built for Startups & Tech Teams

No bloated processes. No agency overhead. Just fast, clean engineering that moves your product forward.

MVP Development

Go from idea to live product in weeks.

You have a startup idea and need to validate it fast — without burning your runway on a bloated agency. I build lean, production-ready MVPs that real users can actually use.

Working product in 4–8 weeks
Built to scale when you grow
Clean codebase you can hand off

For funded startups

Full-Stack Product Engineering

Your first engineer, without the full-time cost.

Need someone who can own the entire stack — frontend, backend, database, deployment — and ship features every sprint? That's exactly what I do.

React / Next.js + Node.js / NestJS
AWS or Azure deployment
CI/CD, auth, payments — all included

For growing products

Performance & Scale

Your app is slow. Your users are leaving. Let's fix that.

Slow APIs, bloated bundles, N+1 queries — I've seen them all. I audit your stack, find the bottlenecks, and fix them. No rewrites unless absolutely necessary.

Core Web Vitals & Lighthouse audit
API response time optimisation
Database query tuning

For tech debt

Legacy Modernisation

Stuck with code that scares your team? I'll untangle it.

That 5-year-old Express app nobody wants to touch. The jQuery frontend that breaks every deploy. I migrate, refactor, and modernise — without taking your product offline.

Zero-downtime migration strategy
TypeScript adoption
Test coverage from scratch

For dev teams

Internal Tooling & APIs

Stop building the same boilerplate. Ship a tool once, use it forever.

CLI tools, internal dashboards, developer SDKs, REST APIs — I build the infrastructure that makes your team 10x faster. Fully typed, documented, and production-ready.

TypeScript-first, fully documented
npm-publishable packages
Webhook & event-driven systems

For CTOs & founders

Technical Advisory

Make the right architecture decision before it costs you.

Choosing the wrong stack or architecture early can set you back 6 months. I review your current setup, challenge your assumptions, and give you a clear technical roadmap — no fluff.

Architecture & stack review
Code audit with actionable fixes
Hiring & team structure advice

Ready to build?

Tell me what you're building.

I'll give you an honest take on your stack, timeline, and what it'll actually take to ship — no sales pitch, no fluff.

Start Building — Free Estimate Let's Connect on LinkedIn

What I've Built

Featured Projects

Open Source / npm
View Case Study
cron-guardian
An open-source npm package that wraps Node.js cron jobs with automatic error handling, retry logic, and execution monitoring — zero config required.
Node.jsTypeScriptnpm+1
Case Study
Open Source / CLI
View Case Study
express-backend-setup
A CLI npm package that scaffolds a production-ready Express.js backend in seconds — with folder structure, middleware, error handling, and environment config out of the box.
Node.jsExpress.jsCLI+2
Case Study
Blog Platform
View Case Study
Five Minutes Talk
A modern blogging platform delivering expert articles across technology, lifestyle, and business — all crafted to be read in just five minutes.
Next.jsReactTypeScript+2
Case Study
SaaS / Web App
View Case Study
DataPulse — SaaS Analytics Dashboard
Built a real-time multi-tenant analytics dashboard for a B2B SaaS startup — giving their customers live visibility into usage metrics, with role-based access and one-click CSV export.
Next.jsNode.jsPostgreSQL+4
Case Study
E-Commerce
View Case Study
StyleCart — Custom E-Commerce Platform
Migrated a fashion retailer off Shopify onto a custom Next.js storefront with Stripe payments, fast product search, real-time order tracking, and a full admin panel — cutting platform costs by $24k/year.
Next.jsTypeScriptStripe+4
Case Study
Healthcare / Business Tool
View Case Study
CareBook — Clinic Appointment System
Built a mobile-first appointment booking system for a multi-location healthcare clinic — replacing a paper diary with real-time slot availability, automated SMS reminders, and a staff management portal.
ReactNestJSPostgreSQL+4
Case Study

My Writing

From My Blog

View all posts

Social Proof

What Others Say

"I've had the pleasure of working with Nisarg for the past year, and he's truly an exceptional developer. His expertise in ReactJS, NodeJS, MySQL, and AI model integration is unmatched, and his outstanding work always exceeds expectations. Beyond his technical prowess, Nisarg's excellent communication and dedication to meeting client needs set him apart. Collaborating with him has been a rewarding experience, as I've gained both hard and soft skills along the way. Nisarg is a true asset to any organization!"

"Nisarg is a very focused, self-motivated techie. In a short period, he has proven to be an exceptional professional. His ability to handle clients and the team with confidence and efficiency is impressive. He's highly focused, self-motivated, and consistently eager to learn and grow in his role. His proactive approach to challenges and passion for acquiring new knowledge make him a valuable asset to any team. Proud to be working with him."

"Nisarg built our entire backend API from scratch — clean architecture, well-documented, and delivered ahead of schedule. What stood out most was how he anticipated edge cases we hadn't even thought of. He's the kind of developer who takes full ownership of his work, and that made a huge difference for our small team."

Get In Touch

Let's Build Something Together

Have a project in mind, looking to hire, or just want to explore if we're a good fit? I'm currently available for freelance projects and full-time roles. Reach out — I reply within 24 hours.

Email Me Directlyhello@nisargsatasiya.com

Or Connect on Social Media

I'm Ready — Let's Talk

I Build Web Apps ThatScale & Perform