SJ
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Available for Freelance Projects & Remote Opportunities

Hi, I'm Sidhu Jangam πŸ‘‹

React Native &Full Stack Developer

I help startups and businesses build high-performance mobile applications and scalable web platforms.

  • 3.5+ Years Professional Experience
  • 7+ Production Projects Delivered
  • Apps Published on Play Store & App Store
  • International Client Experience
Sidhu Jangam β€” React Native & Full Stack Developer

Mobile First

iOS Β· Android

3.5+ Years

Shipping products

About Me

Real apps, shipped to real users

A React Native & Full Stack Developer focused on production-grade mobile and web products β€” built, integrated and deployed end-to-end.

3.5+ Years Experience

React Native & Full Stack Developer with 3.5+ years of experience building production-ready mobile and web applications.

Experienced across Healthcare, Logistics, Fantasy Sports, Ticketing and Business Management platforms β€” I take products from idea to the app stores and the web, with a focus on performance, great UX and clean, maintainable code.

Specialized in

React NativeNext.jsNode.jsFirebasePostgreSQLMongoDBREST APIs

3.5+ Years Experience

Shipping production mobile & web apps end-to-end, from idea to the Google Play Store.

Published on App Stores

6+ React Native apps live on Google Play & the Apple App Store (iOS & Android).

International Clients

Delivered a fantasy sports platform built for the US market.

Full Stack Delivery

Node.js & Next.js backends, REST APIs, admin dashboards and reporting.

PostgreSQL Β· MongoDB Β· Firebase

Relational, document and realtime data modeling tuned for reliability.

Skills & Tools

A complete, modern toolkit

Everything I need to take a product from a Figma file to a published app β€” frontend, backend, and the tooling in between.

Mobile

React Native95%
Android90%
iOS85%
Redux90%
Expo90%

Frontend & Backend

Next.js90%
React92%
TypeScript88%
Node.js88%
Express.js86%
REST APIs92%

Data & Tools

PostgreSQL86%
MongoDB87%
Firebase90%
Git92%
Figma80%
React NativeAndroidiOSReduxNext.jsReactTypeScriptNode.jsExpress.jsPostgreSQLMongoDBFirebaseREST APIsExpoGitFigmaReact NativeAndroidiOSReduxNext.jsReactTypeScriptNode.jsExpress.jsPostgreSQLMongoDBFirebaseREST APIsExpoGitFigma
Featured Work

Production projects I've shipped

Real apps with real users β€” published to the Google Play Store and the web, built for clients across India and the US.

Streekey app screenshot
Fantasy Sports PlatformUSAStreekey logo

Streekey

Lead React Native Developer

Fantasy sports and prediction platform built for the US market β€” daily contests, live predictions and a full wallet system.

  • Fantasy Sports
  • Live Predictions
  • Contests
  • Wallet System

Challenge

Deliver a real-money fantasy platform for US users with live scoring, contests and a secure wallet β€” all performing smoothly at scale.

Solution

Led the React Native build with Redux state management, Firebase realtime updates and well-structured REST APIs for contests, wallet and leaderboards.

Outcome

Shipped a stable production app to the Play Store with seamless live predictions, payouts and a fast, reliable user experience.

React NativeReduxFirebaseREST APIs
NOWgas app screenshot
LPG Gas Delivery PlatformNOWgas logo

NOWgas

React Native Developer

A production-ready LPG gas ordering and delivery platform that modernizes gas ordering, dealer operations, inventory management and real-time delivery tracking.

  • Gas Refill Ordering
  • Real-time Delivery Tracking
  • Inventory Management
  • Dealer Dashboard

Challenge

Modernize LPG ordering and give customers real-time visibility into deliveries while supporting dealer operations and inventory.

Solution

Built ordering, inventory and live delivery tracking with Google Maps and push notifications, backed by a dealer dashboard and digital payments.

Outcome

Launched on both iOS and Android, streamlining the entire order-to-delivery flow and removing delivery uncertainty for customers.

React NativeFirebaseREST APIsGoogle Maps
NOWgas Driver app screenshot
Delivery Driver ApplicationNOWgas Driver logo

NOWgas Driver

React Native Developer

A dedicated driver app for LPG delivery operations β€” drivers receive requests, navigate routes, update order status and manage deliveries in real time.

  • Driver Authentication
  • Delivery Assignment
  • Live Location Tracking
  • Route Navigation

Challenge

Give delivery drivers a reliable field tool to manage assignments, navigation and proof of delivery without friction.

Solution

Created a focused driver app with live location tracking, route navigation, status updates and proof-of-delivery capture.

Outcome

Published to the App Store, enabling faster, accountable deliveries with real-time driver tracking for the operations team.

React NativeFirebaseREST APIsGoogle Maps
Pikeazy app screenshot
Grocery Comparison AppPikeazy logo

Pikeazy

React Native Developer

Grocery comparison and shopping app that helps users compare prices across stores and manage their orders efficiently.

  • Product Search
  • Grocery Comparison
  • Categories
  • Orders

Challenge

Help users quickly compare grocery prices across stores and place orders with a frictionless shopping experience.

Solution

Built fast product search, category browsing and price comparison with Firebase authentication and a smooth order flow.

Outcome

Shipped to the Play Store with an intuitive shopping experience users could navigate in seconds.

React NativeReduxFirebaseREST APIs
Ticket Dash app screenshot
Ticket Auction MarketplaceTicket Dash logo

Ticket Dash

React Native Developer

Real-time ticket auction and event marketplace with live bidding and integrated payments.

  • Ticket Auctions
  • Real-time Bidding
  • User Profiles
  • Event Management

Challenge

Run real-time ticket auctions with concurrent live bidding and secure payments without race conditions.

Solution

Implemented realtime bidding, event management and payment integration in React Native with a Firebase backend.

Outcome

Delivered a stable auction marketplace handling concurrent live bids reliably in production.

React NativeFirebaseREST APIs
Doctolink app screenshot
Healthcare & AppointmentsDoctolink logo

Doctolink

React Native Developer

Healthcare application for doctor discovery and appointment booking, with calendar integration and patient management.

  • Doctor Search
  • Appointment Booking
  • Calendar Integration
  • Notifications

Challenge

Make finding doctors and booking appointments simple and dependable for patients on mobile.

Solution

Built doctor discovery, calendar-based booking, location services and patient management with a clean, reassuring UX.

Outcome

Published to the Play Store with a smooth, reliable booking experience for patients.

React NativeFirebaseREST APIs
Waplia app screenshot
Business Platform & AdminWaplia logo

Waplia

Full Stack Developer

Business platform and administrative management system with a full admin dashboard, user management and reporting.

  • Admin Dashboard
  • User Management
  • Authentication
  • Backend APIs

Challenge

Give a business one platform to manage users, data and reporting with secure access control.

Solution

Built a full-stack admin dashboard and REST APIs end-to-end with Next.js, Node.js and PostgreSQL.

Outcome

Delivered a scalable management system with secure authentication and clear, actionable reporting.

Next.jsReactNode.jsPostgreSQLREST APIs
StayEase app screenshot
Hotel Booking PlatformStayEase logo

StayEase

Full Stack Developer

A modern hotel booking platform (OYO-style) for discovering and reserving stays across Indian cities β€” search, filters, offers, city guides and listings. Live demo deployed on Vercel.

  • Hotel Search
  • Category Filters
  • Wishlist
  • Bookings

Challenge

Showcase a modern, conversion-focused hotel booking experience with discovery and deals.

Solution

Built a responsive Next.js app with search, category filters, offers and curated city guides.

Outcome

Live demo on Vercel demonstrating a polished, OYO-style booking UI across devices.

Next.jsReactTypeScriptTailwind CSS
Live on App Stores

Apps published on the App Stores

Production React Native apps I've built and shipped to Google Play and the Apple App Store β€” installed and used by real people, available to download right now.

Streekey app screenshot
Streekey logo

Streekey

Fantasy Sports Platform

Lead React Native Developer

Fantasy sports and prediction platform built for the US market β€” daily contests, live predictions and a full wallet system.

React NativeReduxFirebaseREST APIs
NOWgas app screenshot
NOWgas logo

NOWgas

LPG Gas Delivery Platform

React Native Developer

A production-ready LPG gas ordering and delivery platform that modernizes gas ordering, dealer operations, inventory management and real-time delivery tracking.

React NativeFirebaseREST APIsGoogle Maps
NOWgas Driver app screenshot
NOWgas Driver logo

NOWgas Driver

Delivery Driver Application

React Native Developer

A dedicated driver app for LPG delivery operations β€” drivers receive requests, navigate routes, update order status and manage deliveries in real time.

React NativeFirebaseREST APIsGoogle Maps
Pikeazy app screenshot
Pikeazy logo

Pikeazy

Grocery Comparison App

React Native Developer

Grocery comparison and shopping app that helps users compare prices across stores and manage their orders efficiently.

React NativeReduxFirebaseREST APIs
Ticket Dash app screenshot
Ticket Dash logo

Ticket Dash

Ticket Auction Marketplace

React Native Developer

Real-time ticket auction and event marketplace with live bidding and integrated payments.

React NativeFirebaseREST APIs
Doctolink app screenshot
Doctolink logo

Doctolink

Healthcare & Appointments

React Native Developer

Healthcare application for doctor discovery and appointment booking, with calendar integration and patient management.

React NativeFirebaseREST APIs
Experience

3.5+ years of shipping real products

Hands-on experience across the full product lifecycle β€” building, integrating, and deploying mobile and web apps to production.

Lead React Native Developer β€” Streekey (USA)

2023 β€” Present

International Client Project

Led mobile development for a US-market fantasy sports and prediction platform, owning architecture, delivery and Play Store deployment.

  • Built fantasy contests, live predictions, wallet and leaderboards in React Native + Redux
  • Integrated Firebase, push notifications and secure user authentication
  • Shipped and maintained the production app on the Google Play Store

React Native & Full Stack Developer

2021 β€” Present

Production Mobile & Web Apps

Delivered production apps across logistics, healthcare, grocery, ticketing and business management β€” published to both Google Play and the Apple App Store β€” and the backends behind them.

  • Built the NOWgas LPG delivery platform & driver app with live tracking and Google Maps (iOS + Android)
  • Published Pikeazy, Ticket Dash, Doctolink and NOWgas to Google Play and the App Store
  • Built admin dashboards and REST APIs with Next.js, Node.js & PostgreSQL (Waplia)

What I bring to every project

3.5+ Years Professional Experience

Production Mobile Applications

Google Play Store Deployments

API Integrations

Firebase Implementations

Full Stack Development

International Client Projects

Admin Dashboard Development

3.5+ Years

of professional development experience

Domains I've worked across

Real-world products, not side projects.

Logistics & Delivery PlatformsHealthcare ApplicationsFantasy Sports ApplicationsTicketing SystemsE-commerce SolutionsReal-time Tracking SystemsDriver ApplicationsAdmin Dashboard Development
Services

How I can help you ship

From a single mobile app to a complete platform with its backend β€” pick what you need, or let's do it all together.

React Native App Development

Cross-platform apps that look and feel native on both iOS and Android, from one codebase.

Android App Development

Performant Android apps with smooth animations and Google Play-ready builds.

iOS App Development

Elegant iOS experiences that meet Apple's guidelines and ship to the App Store.

Full Stack Web Development

End-to-end web apps β€” from database and API to a polished, responsive UI.

Next.js Development

Fast, SEO-optimized, server-rendered web apps built with Next.js & TypeScript.

Node.js Backend Development

Secure, scalable Node.js & Express backends with clean architecture.

API Integration

Reliable REST API design and third-party integrations (payments, maps, more).

Firebase Integration

Auth, realtime data, push notifications and analytics with Firebase.

Admin Dashboard Development

Data-rich dashboards with user management, reports and role-based access.

Have something else in mind?

Let's scope it together and build the right solution.

Why Clients Hire Me

A reliable partner, not just a developer

Founders and teams keep coming back because the experience is smooth from first message to long after launch.

Fast Communication

Clear, responsive updates throughout the project β€” you're never left guessing.

Clean & Maintainable Code

Well-structured, scalable code that's easy to extend and hand over.

On-Time Delivery

Realistic timelines and reliable delivery β€” milestones met as promised.

Full Stack Expertise

Mobile, web and backend handled by one developer β€” no integration gaps.

Play Store & App Store Experience

Proven track record publishing and maintaining apps on both stores.

Long-Term Support

Ongoing maintenance, updates and improvements after launch.

Have a project in mind?

Let's turn your idea into a production-ready app.

Contact

Let's build something great

Have a project in mind or just want to say hi? Drop me a message and I'll get back to you within 24 hours.

Get in touch

Prefer a direct line? Reach me on any of these channels.

Chat with me on WhatsApp

Average response time

Within 24 Hours

Available for

  • Freelance Projects
  • Contract Work
  • Full-Time Remote Roles