HossamΒ Mahmoud
Individual Contributor at Toptal
Cairo, Cairo, Egypt
Summary
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Seniorπ
Top SchoolHossam Mahmoud is a Senior Mobile Engineer with nine years of experience building high-performance iOS and Flutter applications across Fintech, Healthtech, E-commerce, Agritech, and Edtech. He specializes in architecting modular, event-driven systems using Domain-Driven Design and reactive patterns, and has a track record of reducing release cycles by up to 70% through CI/CD and clean-architecture refactors. Hossam boosted test coverage to 85% in critical modules by championing unit and widget testing and introduced AI-assisted development workflows to accelerate delivery and refactoring. His work spans end-to-end delivery: performance optimizations that improved critical module speed by 80%, observability and analytics integrations that halved bug investigation time, and multi-platform shipping for high-traffic apps. Based in Cairo, he combines a mechanical engineering background with formal mobile development training from ITI, which helps him translate complex domain requirements into pragmatic, reliable mobile products. Heβs equally comfortable contributing as an individual engineer and leading cross-functional efforts to make engineering practices product-focused and measurable.
9 years of coding experience
8 years of employment as a software developer
Mobile Application Development, Mobile Application Development at Information Technology Institute (ITI)Bachelor of Engineering - BE, Mechanical Engineering, Bachelor of Engineering - BE, Mechanical Engineering at South Valley University
Arabic, English, Turkish
Stackoverflow
125reputation
3kreached
1answer
3questions
Github Skills (75)
interceptor10
mobile-development10
windows10
middleware10
flutter-plugin10
app-framework10
skiasharp10
youtube10
skia10
dart10
cli10
cross-platform10
ffmpeg10
dio10
android10
Programming languages (6)
Github contributions (5)
hossameldinmi/core_fe
Jan 2021 - Mar 2022
Core.FE.Flutter
Contributions:76 commits, 44 PRs, 76 pushes in 1 year 1 month
flutterdart
hossameldinmi/Flutter
Feb 2019 - Mar 2020
Flutter Samples
Contributions:1 PR, 4 pushes, 3 branches in 1 year 1 month
mobile-developmentflutter-samplesdartnull-safetyflutter
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