Full-stack developer for web & mobile apps

One developer for the whole product: the app your customers use, the admin panel your team runs, and the backend in between. I recently built a wholesaler's two Android apps, web admin and API on my own.

01 What I do

How I can help

Customer apps

Android apps with React Native/Expo and fast web apps with React and Next.js, including OTP sign-in and payments.

Admin panels & dashboards

Internal tools your team will actually use: orders, inventory, users, reports and roles.

Ordering & booking systems

Carts, pricing rules, order tracking, delivery roles, invoices and notifications.

Updates without the Play Store

Self-updating Android apps with forced updates and safe rollbacks, as built for Neem Karoli Sales.

  • React
  • Next.js
  • TypeScript
  • React Native
  • Expo
  • Tailwind
  • Node.js
  • Fastify
  • MongoDB
  • PostgreSQL

02 Proof

Recent work in production

Real products for real organisations. See all work →

Neem Karoli Sales · ordering platform

Two Android apps, web admin and API for a wholesaler, built solo: OTP sign-in, Cashfree payments, GST invoices, 1,290+ tests.

neemkarolisales.in

Shikhar EdTech · complete coaching platform

Website with SEO, online JEE/NEET test platform, admissions CRM, JoSAA college predictors and Razorpay admissions, all built and run by me.

shikharedtech.com

Pickup Coffee · 500+ stores

Data platform (Airflow, BigQuery, Metabase) and backends for the customer app, barista tablet app and back office. 30% lower API latency.

pickup-coffee.com

Yugam International School · website

Next.js school website with paid event passes, OTP sign-in, Cashfree payments and SEO.

yugam.co

03 Process

How we'll work together

  1. 01Call

    We talk through the problem and I suggest the simplest thing that solves it.

  2. 02Plan

    A clear scope, timeline and fixed quote. No surprises.

  3. 03Build

    Weekly demos on a live link, so you see progress as it happens.

  4. 04Launch

    Deployed, monitored, documented, and supported after launch.

04 FAQ

Common questions

Can Gajraj build both the app and the backend?

Yes. For Neem Karoli Sales he designed and built two Android apps, a web admin and the API on his own, with payments, GST invoices and 1,290+ automated tests.

Does he build Android and iOS apps?

He builds cross-platform apps with React Native and Expo. His recent production apps are Android; iOS uses the same codebase.

Which frontend frameworks does he use?

React and Next.js for the web, React Native for mobile, with TypeScript and Tailwind CSS.

Let's talk about your project

Tell me what you need. I usually reply within a day.