Alexander T.

Senior React Native Developer. Top Rated Plus on Upwork. I ship production React Native apps that survive past the demo: real auth, real APIs, real testing, real ops. I've spent thousands of hours building exactly that: React Native + Expo iOS/Android clients, Node and NestJS services, Python where the pipeline or AI piece belongs on the server, PostgreSQL / MongoDB / GraphQL data layers. Repeat clients, hire-again rate around 85%. The work has spanned SaaS (including a Product Hunt Product of the Year workspace product), mobile at real scale (fitness and audio platforms with very large user bases), banking and healthcare-style flows, marketplaces, and open source. Production AI shipped where it earned its keep: video transcription, segmentation, async processing. What I deliver: - React Native + Expo mobile apps, iOS and Android, App Store and Play Store ready - Full-stack ownership: React frontend, Node and NestJS backend, TypeScript end-to-end - Python services when the AI or data pipeline lives on the server - Production-ready apps with auth, APIs, testing, and ops Tech stack: React Native, Expo, React, Next.js, Node.js, NestJS, TypeScript, Python, PostgreSQL, MongoDB, GraphQL. Senior React Native Developer, React Native Developer, Mobile App Developer, React Developer, Full Stack Developer, iOS Developer, Android Developer, TypeScript Developer, Node.js Developer.