Mobile product engineering
React Native developer in Kolkata for mobile products that ship
I’m Apratim Dutta, a React Native developer based in Kolkata. I build cross-platform Android and iOS products for startups and product teams—from the first usable release through store delivery and production iteration.
Capabilities
Product engineering beyond the interface
React Native and Expo delivery
Maintainable mobile interfaces, navigation, state-heavy workflows, native capabilities, responsive layouts, animations, and reliable release builds.
Product and backend integration
REST APIs, authentication, payments, subscriptions, real-time messaging, notifications, deep links, background events, and analytics connected into complete user journeys.
Android and iOS shipping
Practical experience taking applications through Google Play and the Apple App Store, including production debugging and post-release improvements.
Production proof
Experience grounded in shipped work
- Shipped React Native applications to both Google Play and the Apple App Store.
- Built push notifications, deep linking, and background event handling for field teams.
- Integrated Firebase real-time messaging, Razorpay payments, and RevenueCat subscriptions.
- Delivered mobile products spanning construction operations, social discovery, and AI-assisted cooking.
How I work
A practical route from idea to release
- 01
Clarify the product
Define the user journey, technical constraints, integration points, and the smallest release that creates real value.
- 02
Build in visible slices
Ship complete flows early, validate them on actual devices, and keep product, design, and engineering decisions connected.
- 03
Harden and release
Test failure states, performance, analytics, store requirements, and operational behavior before production delivery.
Selected work
Case studies with implementation detail
Full-stack product engineering
SiteMaster - Construction & Interior Project Management Platform
Built end-to-end workflows across frontend and backend for field teams handling updates, approvals, procurement, and operational data at scale.
Read the case studySocial event discovery app
Scaape Event Platform
Built a location-aware mobile app that helps users discover local activities, join seamlessly, and chat in real time.
Read the case studyAI-powered cooking companion
Heshel AI
Turned saved food inspiration into actionable meal decisions with ingredient detection, recipe parsing, and swipe-based recommendations.
Read the case studyCommon questions
Working together
What kind of React Native projects do you work on?
I focus on product applications that need polished mobile UX, APIs, authentication, payments, notifications, real-time data, or device-level integrations.
Can you build for both Android and iOS?
Yes. I use React Native and Expo to deliver shared product experiences across Android and iOS while handling platform-specific behavior where required.
Do you work only with teams in Kolkata?
No. I am based in Kolkata and can collaborate remotely with product teams across India and international time zones.
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