Waris

Flutter Keyboard App Developer

Fiverr Client Project • Vollzeit

Dec 2025 - Feb 2026 • 2 mos

I developed a custom iOS keyboard application for a Fiverr client that works independently as a system-level keyboard. The keyboard was designed to be fast, stable, and user-friendly, allowing users to switch to it seamlessly across different apps. The application was built using Flutter for the main app experience and Swift for native iOS keyboard extension integration, ensuring proper performance and Apple platform compatibility. The keyboard includes AI-powered features such as grammar correction, text rephrasing, sentence rewriting, email writing assistance, and personalized text suggestions to improve user productivity. I handled the complete development process including keyboard UI design, native iOS integration, Flutter–Swift communication, performance optimization, and testing. The final solution was delivered as a production-ready app with a scalable architecture suitable for future feature expansion.

Mobile Analytics, Attribution & Monetization Specialist

Fiverr • Freiberufler

Dec 2024 - Jul 2025 • 7 mos

Implemented AppsFlyer, Google Tag Manager (GTM), and RevenueCat for a Saudi-based company across 3 production mobile apps built with Flutter. Set up complete mobile attribution and event tracking using AppsFlyer, including installs, in-app events, conversions, and campaign performance. Configured GTM containers to manage analytics events efficiently without frequent app releases. Deployed RevenueCat to handle in-app purchases and subscriptions, including product setup, entitlements, offerings, and paywall logic for both iOS and Android. Ensured accurate subscription status syncing, renewal handling, and purchase validation. Worked closely with Firebase Analytics to validate events, debug tracking issues, and ensure clean, reliable data for marketing and monetization decisions.