Israr K.

Senior React Native Dev | 7 Yrs, 10M+ Users | Full-Stack + AWS

Need a senior React Native engineer who ships the whole thing (app, backend, and infra) and keeps it healthy in production? That's what I do. I have 8 years building React Native apps used by millions of real users, and I own products end-to-end, so you don't have to coordinate three different people to get one app out the door. What I can do for you: - Build your app from scratch, or take over a messy one and stabilize it - Fix slow or crashing apps. I cut one app's load time from 4.5s to 1.2s and reduced another's crash rate by 70% - Own the backend and infra too: Node.js, REST APIs, AWS (EC2, PostgreSQL on RDS, Secrets Manager), Docker - Go deep where most RN devs can't: native modules (Kotlin/Swift), real-time systems (MQTT), and voice AI. On-device STT/TTS (Whisper, wake word) plus cloud voice with Azure, ElevenLabs, and Gemini 2.5 Live Ship it and keep it healthy: - Releases and CI/CD: Fastlane, EAS - Testing: E2E with Maestro, unit and component with Jest - Monitoring: Sentry, CloudWatch and Grafana dashboards, p95 metrics, phone alerts Some of what I've shipped: Flipkart UPI payments (10M+ users), HDFC PayZapp onboarding, STC Play (1M MAU), and Wadhwani's skilling platform, an education product used across 5 countries, where I led the rebuild from WebView to fully native for 130K users and also built AI Pitch Trainer and Interview Coach. I've open-sourced my own offline speech-to-text Module and contributed to iNaturalist. How I work: daily updates, clean code you own from day one, and I don't disappear mid-project. Tell me what you're building and I'll tell you exactly how I'd approach it.