Available to hire
I am Kareem Mansy, a Senior Android and Flutter Developer with over 8 years of experience in architecting and delivering high-performance, scalable mobile apps.
I lead development teams, implement clean architecture principles, and optimize user-centric solutions. I enjoy collaborating with international clients to build innovative B2C products that set new market benchmarks, and I am committed to continuous learning and excellence, leveraging Kotlin, Java, and Flutter to drive growth.
Language
Arabic
Fluent
English
Fluent
Work Experience
Staff Mobile Software Engineer (Flutter) at Nana
January 1, 2025 - PresentFlutter-first modular architecture; added native Swift/Kotlin bridges for iOS Live Activities, widgets, deep links, and OS-specific capabilities. Implemented dynamic content & feature flag platform via Strapi to change UI/behaviour without full releases. Built CI/CD pipelines (GitHub Actions) with automated linting, tests, signing, staged rollouts, and release scripting. Established observability & analytics stack: Sentry (crash/release health), CleverTap & Clarity (funnels, retention, session behavior), plus governed event taxonomy. Drove growth experiments and lifecycle messaging using segmentation and behavioral signals. Tuned performance (startup, memory, network, asset strategy) with profiling and selective native optimization. Authored Mobile Engineering Playbook (architecture, platform channel patterns, onboarding) and mentored engineers. Created developer automation (CLI/scripts for environment switching, smoke checks) to streamline releases.
Mobile Software Engineer (Android & iOS) at Nexta
January 1, 2024 - December 31, 2024Led mobile development; directed integration and release of key features, ensuring high-quality functionality and user experience. Ensured smooth and secure user experiences, launched updates and enhancements, and collaborated closely with design and backend teams to streamline functionality and UI improvements.
Senior Android Engineer at KCS
June 1, 2023 - January 31, 2024Pioneered enhancements for Toyota vehicle management app, including RFID functionality and Charging History features, boosting user experience and app capabilities. Implemented robust unit testing frameworks using JUnit and Mockito, significantly improving code reliability and reducing defects by ~40%.
Android Team Lead at TrustSwap
May 1, 2022 - November 30, 2023Built and led a high-performing Android team, delivering high-impact apps and improving project delivery speed by 30%. Fortified app security by integrating the Native Development Kit (NDK) to securely guard API keys. Improved Agile processes by introducing Scrum, enhancing predictability and collaboration by ~35%.
Senior Software Engineer (Android & Flutter) at Roaa Technology
July 1, 2020 - April 30, 2022Stabilized the Freejna Android app to ~95% uptime, reduced crash rates by 30%, and supported a 500k user base. Improved performance and memory efficiency by 85%, enabling a more responsive user experience. Launched cross-platform efforts (Flutter for Android and iOS) and redesigned architecture to reduce technical debt by ~50%.
Android Engineer at Alamat Tech
February 1, 2019 - December 31, 2020Delivered cutting-edge Android apps; resolved critical issues and optimized app performance, resulting in improved stability and user experience.
Android Engineer at Blue Media
February 1, 2019 - August 1, 2020Delivered cutting-edge Android apps; resolved major issues and improved stability.
Education
Bachelor of Management Information System at Madina Academy, Egypt
January 1, 2012 - January 1, 2016Bachelor of Management Information System at Madina Academy
January 1, 2012 - January 1, 2016Bachelor of Management Information Systems at Madina Academy
January 1, 2012 - January 1, 2016Qualifications
SCCI Cairo University
January 11, 2030 - March 30, 2026SCCI Cairo University Certification
January 11, 2030 - April 18, 2026SCCI Cairo University
January 11, 2030 - April 18, 2026Mobile Instructor: Creative Hub
January 11, 2030 - April 18, 2026Industry Experience
Software & Internet, Media & Entertainment, Professional Services, Other
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