Mayokun Elias Yusuf

I’m a versatile Android developer and Head of Mobile Engineering with over 7 years of experience building scalable, user-centric mobile applications with Kotlin and the Android SDK. I specialize in MVVM architecture and use Jetpack components—ViewModel, LiveData, Room, and Navigation—to deliver maintainable, lifecycle-aware apps.

In my current role at GetPayed Limited, I lead the Android development team for an agency banking application, handling technical direction, task prioritization, and code reviews. I implemented a centralized exception and crash handling framework using Android SDK APIs and logging tools, reducing production crash rates by 20%.

I also optimize critical workflows like receipt printing by correctly handling lifecycle events and hardware callbacks, reducing transaction duplication and fraud. Additionally, I integrate and manage third-party terminal and payment SDKs to ensure reliable hardware communication under high transaction volumes, enabling ₦10B+ in monthly transaction processing.

Previously at Qucoon Limited, I built and deployed Kotlin-based mobile applications to the Google Play store, increasing app downloads and user engagement by 20%. I reduced crash rates by 45%, improved user experience, strengthened code reliability through unit testing (25% higher coverage), and increased intern contributions and team productivity by 50% through mentoring.