Hey 👋, I'm Subrata!

React Native Architect • Open Source Maintainer • Platform Engineer

I design and build scalable mobile platforms, not just apps. My work spans React Native architecture, native Android/iOS integration, JSI & C++, and developer tooling.

📍 Bengaluru, India 🇮🇳

🎓 Engineer by profession, teacher by heart ❤️

🧠 Passionate about clean architecture, memory safety, and long-term maintainability

🔗 Connect with me on:

🧠 What I Do (At an Architectural Level)

• Design production-grade React Native architectures
• Build reusable platforms, CLIs, and design systems
• Bridge Java/Kotlin ↔ React Native ↔ JSI/C++
• Solve native performance & memory safety issues
• Mentor engineers and students into industry-ready developers

🔥 Open Source Impact

🧩 React Native Skia (Shopify)

Core Contributor

• Fixed a native C++ dangling pointer bug in the Skia JSI layer
• Root cause: temporary UTF-8 string lifetime misuse triggering -Wdangling-assignment-gsl and breaking Android builds
• Solution: preserved backing string storage before c_str() usage
• Result: Android native builds stabilized, no API or behavior change
• PR reviewed and approved by core maintainer @wcandillon

🔗 Shopify/react-native-skia#3614

🛠️ Maintained Open Source Projects

🚀 tcbs-cli

React Native Scaffolding & Architecture CLI

• Opinionated CLI to bootstrap production-ready React Native apps
• Clean folder structure, scalable architecture, and best practices
• Designed to save days of setup time for teams and startups

🔗 https://github.com/subraatakumar/tcbs-cli

🎨 @tcbs/react-native-mazic-ui

Design System & UI Foundation

• Reusable, theme-driven UI components for React Native
• Built with scalability, consistency, and performance in mind
• Used as a base UI layer for multiple apps and products

🔗 https://www.npmjs.com/package/@tcbs/react-native-mazic-ui

🎯 Real-World Engineering Challenges I’ve Solved

1. Reverse-engineering an outdated Android SDK Adapted an unmaintained POS Android SDK for React Native by studying native documentation and extending the NPM package.

2. Reliable emulator detection without third-party libraries Implemented a custom Android native solution (Java) and bridged it into React Native for startup-grade security requirements.

3. Subscription-free reverse geocoding Combined iOS free APIs with Android native android.location.Geocoder via React Native bridges to achieve accuracy without recurring costs.

🧰 Technical Skill Set

Mobile & Frontend

• React Native | Expo | JavaScript | TypeScript | HTML | CSS

Architecture & State

• Clean Architecture | Modular Design
• Redux | MobX | Zustand | Context API

Backend & Storage

• Firebase | MongoDB | SQLite | Realm | MySQL | Realtime DB

Testing & Quality

• Jest | React Testing Library | Detox
• Crashlytics | Analytics | Performance monitoring

Tooling & DevOps

• Git | GitHub | GitLab
• CI/CD | Monorepo patterns | CLI tooling

🧑‍🏫 Beyond Code

• Mentor aspiring developers (free & open learning)
• Write blogs and teach React Native from fundamentals to architecture
• Believe in giving back through open source

When I’m not building platforms, I’m watching sci-fi movies 🚀 or writing.