Hi, I'm
Ujjwal Kumar
I build complete digital products — from React and React Native interfaces down to Node.js APIs, Supabase/PostgreSQL data, and the authentication and business logic that hold them together.
Six areas I work across, end to end.
Dashboards, admin panels and responsive business applications built in React.
React Native apps with real API integration and device-level workflows.
REST APIs, service-layer architecture and business logic in Node.js and Express.
JWT authentication, Supabase and PostgreSQL data modeling done properly.
Payments, orders, expenses, localization and attendance — real business logic.
SMS parsing, JSON translation pipelines, and PDF generation/export.
Frontend Developer · Product Engineer
I enjoy building complete applications — the interface someone taps first, and the API and database decisions underneath it that no one sees. That means owning frontend architecture, backend services, authentication and the data layer together.
Most of what I've built doesn't behave like a tutorial example: payment and expense flows, multilingual systems, attendance and biometric check-ins, order and dispatch workflows.
Download CV ↓Real workflows, not demo apps.
A full-stack sales and order management platform built for a dry-cleaning business to manage customer orders, order workflows, services, and business operations through a modern web interface.
A full-stack expense tracking application for managing personal expenses and group-based expense splitting, with authenticated users and backend data synchronization.
A web-based management system designed to help manage playschool operations, student-related information, daily activities, and administrative workflows through a structured interface.
An automated language translation workflow for structured JSON content that preserves placeholders, variables, formatting, and application-specific content structure while generating multilingual content.
The actual business problem, first.
A clean, intuitive experience.
Frontend, backend, API, data.
Maintainable, readable code.
Test, debug, optimize.
Let's turn the idea into something people can actually use.