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I am Muhammad Hamza, a Senior Android Developer based in London with 5+ years of experience building high-performance, secure mobile apps. I specialize in Kotlin, Jetpack Compose, MVVM, and Clean Architecture, with a track record of delivering scalable solutions for 500K+ monthly active users. I’m passionate about clean code, robust security (SSL pinning, encryption), and optimizing performance from ideation to post-release. I enjoy leading cross-functional teams, mentoring junior developers, and driving product decisions with data. I thrive in fast-paced agile environments, delivering user-centric features, improved launch times, and enhanced security across complex modules like rides, food, and rentals.…I am Muhammad Hamza, a Senior Android Developer based in London with 5+ years of experience building high-performance, secure mobile apps. I specialize in Kotlin, Jetpack Compose, MVVM, and Clean Architecture, with a track record of delivering scalable solutions for 500K+ monthly active users. I’m passionate about clean code, robust security (SSL pinning, encryption), and optimizing performance from ideation to post-release. I enjoy leading cross-functional teams, mentoring junior developers, and driving product decisions with data. I thrive in fast-paced agile environments, delivering user-centric features, improved launch times, and enhanced security across complex modules like rides, food, and rentals.

Muhammad Hamza

App Developer, Web Developer, Full Stack Developer, +2

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I am Muhammad Hamza, a Senior Android Developer based in London with 5+ years of experience building high-performance, secure mobile apps. I specialize in Kotlin, Jetpack Compose, MVVM, and Clean Architecture, with a track record of delivering scalable solutions for 500K+ monthly active users. I’m passionate about clean code, robust security (SSL pinning, encryption), and optimizing performance from ideation to post-release. I enjoy leading cross-functional teams, mentoring junior developers, and driving product decisions with data. I thrive in fast-paced agile environments, delivering user-centric features, improved launch times, and enhanced security across complex modules like rides, food, and rentals.…I am Muhammad Hamza, a Senior Android Developer based in London with 5+ years of experience building high-performance, secure mobile apps. I specialize in Kotlin, Jetpack Compose, MVVM, and Clean Architecture, with a track record of delivering scalable solutions for 500K+ monthly active users. I’m passionate about clean code, robust security (SSL pinning, encryption), and optimizing performance from ideation to post-release. I enjoy leading cross-functional teams, mentoring junior developers, and driving product decisions with data. I thrive in fast-paced agile environments, delivering user-centric features, improved launch times, and enhanced security across complex modules like rides, food, and rentals.

Available to hire

I am Muhammad Hamza, a Senior Android Developer based in London with 5+ years of experience building high-performance, secure mobile apps. I specialize in Kotlin, Jetpack Compose, MVVM, and Clean Architecture, with a track record of delivering scalable solutions for 500K+ monthly active users. I’m passionate about clean code, robust security (SSL pinning, encryption), and optimizing performance from ideation to post-release.

I enjoy leading cross-functional teams, mentoring junior developers, and driving product decisions with data. I thrive in fast-paced agile environments, delivering user-centric features, improved launch times, and enhanced security across complex modules like rides, food, and rentals.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Work Experience

Senior Android Developer at PickMe Digital Mobility Pvt Ltd

March 1, 2024 - Present

Migrated Android codebase from XML layouts to Jetpack Compose, boosting UI rendering speed and reducing boilerplate. Implemented SSL Certificate Pinning with advanced encryption, enhancing app security and reducing vulnerability risks by 80%. Optimized multi-module architecture, enabling faster feature releases across rides, food, market, and rentals. Integrated advanced analytics (CleverTap, AppsFlyer, Firebase, custom events) to drive data-driven decisions and improve engagement. Scaled app to 500K+ MAUs with 99.9% crash-free sessions per Firebase Crashlytics. Collaborated across backend, QA, and product teams. Applied performance optimization techniques, including background threading and memory profiling.

Senior Android Developer at PickMe Neversitup

February 1, 2024 - September 17, 2025

Architected modular Android apps with Kotlin, MVVM, and Jetpack Compose; developed dynamic feature modules for on-demand downloads; implemented OAuth2/JWT authentication and AES encryption for secure local storage. Optimized app launch time by 40% and reduced memory footprint using LeakCanary and strict profiling. Integrated RESTful APIs and WebSocket services for real-time updates and offline synchronization. Led a cross-functional agile squad and mentored juniors; introduced in-app analytics and crash monitoring for proactive stability improvements.

Android Developer at PickMe Innovo Technologies

September 1, 2022 - September 17, 2025

Developed Android apps using Java and early Kotlin with MVVM and Clean Architecture. Implemented user authentication, form validation, and REST/OkHttp-based networking. Improved stability and reduced crash rates; performed unit/UI testing with JUnit and Espresso. Engaged in code reviews and collaboration with QA/UI/UX teams; supported localization for multiple languages.