Edward Sentongo

Senior Mobile Engineer · Android & iOS
Mobile architecture · Security · Technical Leadership

I’m a senior mobile engineer with over a decade of experience designing and building secure, scalable and maintainable applications for Android and iOS. My work spans banking, healthcare, electronics and government, including digital identity and connected devices. I’ve contributed to both greenfield launches and the transformation of established platforms.

Working with Kotlin, Swift, Jetpack Compose and SwiftUI, I combine hands-on development with mobile architecture and technical leadership. I focus on translating business goals and user needs into practical technical decisions, creating modular, testable systems that teams can confidently maintain and evolve.

Security is a substantial part of my experience. I’ve built a secure digital identity wallet for Android, implementing encrypted local storage, encrypted communication and cryptographic mechanisms for key agreement, signing and verification. My wider work includes identity verification, biometric authentication, Apple Pay and secure single sign-on, alongside backend development with Kotlin and Spring Boot.

Beyond implementation, I collaborate with product owners, designers and engineering teams on architecture, testing strategy, performance optimization and production delivery. I make technical trade-offs clear and help teams strengthen their development and CI/CD practices. I also enjoy mentoring developers through hands-on coaching and knowledge sharing.

This site offers a curated look at projects I’ve contributed to over the years and the thinking behind them. Feel free to explore and get in touch if you’d like to discuss mobile development, architecture or working together.