React and React Native delivery across mobile products, enterprise apps, and user-facing experiences.
I'm a Lead React Native Engineer with 8+ years of experience shipping cross-platform mobile applications across Android, iOS, and Windows for enterprise teams and frontline users at scale.
Currently leading mobile and AI-powered product development at Nutrien's Digital HUB, where I architect LLM-driven recommendation experiences on top of AWS Bedrock and a GraphQL/Apollo data layer.
Previously owned core surfaces for Walmart Sam's Club (My Club App, ~50K daily associates), HP's React Native Windows apps shipped on 50–60M devices, and high-traffic consumer apps at Cars24, 1Fin, Balance, and others.
I care about performance, offline-first architecture, hardware-aware mobile UX, and shipping AI features that actually help users in the field.
Snapshot
8+ years
building React and React Native products
10+
selected deliveries across product teams
Focus Areas
Based in the United States
Lead Software Engineer — Digital HUB
- Lead engineer for Digital HUB, a unified React and React Native codebase delivering web, iOS, and Android from a shared component library.
- Architected an AI-powered recommendation platform on AWS Bedrock, surfacing LLM-generated agronomic insights directly inside the React Native UI.
- Built a visual prompt-builder so field associates compose multi-select prompts instead of writing free-form queries — backed by backend-configurable prompt scaffolding that ships without a mobile release.
- Modernized data fetching with Apollo Client and GraphQL, reducing latency for field associates in low-connectivity areas.
React NativeReact
TypeScript
GraphQL
Apollo Client
AWS Bedrock
AWSSenior Software Engineer
- Owned the My Club App used daily by ~50,000 associates; partnered with UX on a Figma-driven component system aligned to Walmart's global design system.
- Led the React Native 0.80+ migration, cutting crashes by 30% with an error-boundary architecture and custom crash analytics pipeline.
- Integrated Hermes — 40% faster JS bundle load and meaningful TTI gains for associates on shared and aging devices.
- Architected a composite mini-app framework for modular feature delivery across associate-facing surfaces, plus BYOD access with conditional auth and enterprise compliance.
- Resolved Zebra and OEM Android constraints (scanner APIs, background limits) and coordinated MDM distribution across 50K+ devices.
- Mentored four junior engineers on React Native, TypeScript, and CI/CD workflows.
React NativeTypeScriptReactGraphQLApollo Client
Redux
Android
GitSenior React Native Engineer
- Built React Native Windows (UWP) device management apps shipped as a key module on 50–60M HP consumer devices.
- Engineered a Redux-Saga real-time event orchestration system that improved hardware communication accuracy by 25%.
- Authored custom native bridges across UWP, Android, and iOS to expose hardware telemetry to the React Native layer.
- Integrated Stripe SDKs for a unified payment flow inside the React Native environment, and cut package size by 15% via NuGet and mono-repo cleanup.
React NativeTypeScriptReactRedux
C#
JavaScriptReact Native Developer (Freelance)
- Cars24 — embedded with the core team on a 5M+ download consumer app; migrated the listing page from FlatList to RecyclerView for a 20% performance gain and led a plugin architecture for swappable third-party modules.
- 1Fin (Indigo Learn) — sole developer: built the entire EdTech mobile app (Android + iOS) from scratch, now live with 100K+ downloads; shipped encrypted content delivery and CodePush OTA updates that cut churn by 20%.
- Balance (Dubai) — led a multi-currency wallet for the MENA region, integrating Rollbar and reaching 99.9% crash-free sessions.
- Mc Master of Ceremony — built a React Native WebRTC live-streaming module supporting 50K+ concurrent attendees with low-latency transport.
React NativeReactTypeScriptReduxJavaScriptAndroidReact Native Developer
- Built VendSmart, an NFC-powered vending machine payment app (Android + iOS) processing $1M+ in monthly transactions.
- Integrated Detox end-to-end testing, reducing regression bugs by 35% and improving release confidence.
React NativeJavaScriptReduxAndroid
Jest & DetoxReact Native Developer
- Built React Native dashboards and status views for energy-production monitoring.
- Translated client requirements into responsive UI flows with a focus on clarity and maintainability.
React NativeReactJavaScript
HTML
CSSReact Native Developer
- Added client-side interfaces using React Native JSX patterns.
- Used Redux-Saga to simplify side effects and error handling.
- Contributed unit tests with Jest and end-to-end automation with Detox and Mocha.
React NativeJavaScriptReduxJest & DetoxContact Form
Please contact me directly at nagasaicharangubba(at)gmail.com or drop your info here.