Roozbeh Zarei

Led development of a parental control app, delivering real-time child device monitoring (location, battery, calls, SMS) to parents.

Also enhanced a previously developed application by engineering backward-compatibility from Android 12+ to Android 8+, increasing device coverage by an estimated 36%.

Developed a multilingual, cross-platform Flutter app for a leading online clinic in UAE, enabling seamless booking of doctors and lab tests on both Android and iOS devices.

Engaged by six clients for Kotlin-centric development projects, consistently earning 5-star ratings for code quality, communication, and on-time delivery. Most important project was an interactive game (keepie uppie style), focusing on smooth animations and responsiveness using Android's ObjectAnimator API.

Built a high-traffic consumer-facing app for online soccer ticket sales, integrated with Firebase for analytics, crash reporting, and push notifications; handled up to 20K concurrent users during peak events.

Also created an internal app for stadium agents to validate and print tickets using ML Kit barcode scanning, deployed on Android POS devices to streamline gate operations.