Shubhanshu Barnwal - Senior Mobile Engineer

Shubhanshu Barnwal

Senior Mobile Engineer

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Shipping mobile products that matter

I started my engineering career in 2022 with front-end and back-end fundamentals, then quickly gravitated toward mobile. Over the last three years, I've gone deep on React Native — shipping cross-platform apps, upgrading core infrastructure, and optimizing performance using React Native.

My recent work includes migrating large-scale apps to the React Native New Architecture (Fabric & Hermes), upgrading React Native across major versions (0.73 to 0.84), and modernizing legacy codebases by converting class components to functional components with hooks. I've also integrated payment gateways, analytics SDKs, and OTA update systems in production.

On the native side, I bring strong Swift and iOS expertise — handling native modules, bridging, and platform-specific optimizations. I care deeply about app performance, memory efficiency, and delivering stable releases at scale.

Currently at

Leading React Native development and iOS optimization at Illumine driving the New Architecture migration, modernizing legacy code, integrating payment SDKs, and shipping performance improvements that impact thousands of users.