Muhammed A

Mobile App Developer (Flutter & React Native)

Upwork • Freelance

Aug 2024 - May 2026 • 1 yr 9 mos

I build mobile apps for clients as a freelancer on Upwork. Most of my work is in Flutter and React Native, with Node.js and Laravel on the backend. One of my main projects was a fintech wallet app. It handles mobile money deposits and withdrawals, KYC verification with document upload, biometric login, PIN security, transaction history, and multi-currency balances. I worked on the full build from the app screens to the backend APIs and third-party payment integrations, then published it to the stores. I also built an offline-first business management app for a sales team. It runs fully offline using a local SQLite database and includes an org chart to track team structure, a pipeline board for leads, a rank and performance engine, a follow-up reminder system, and bulk data import from spreadsheet exports. Outside of app work, I do Shopify and ecommerce development. This includes custom theme work in Liquid, store migrations between platforms, and backend integrations with tools like Zoho, Amazon SP-API, and logistics systems. I handle projects end to end. That means planning the build, writing the code, testing on real devices, fixing bugs, and publishing to the App Store and Play Store. I also take over apps other developers left unfinished.