Hassan Salah
@hassansalah
I build reliable Android fintech apps with Kotlin and Jetpack Compose.
EgyptWhat I'm looking for
At Derayah Financial, I built Derayah Smart from scratch in eight months, reaching 6.3K+ installs with a 0.68% crash rate, while maintaining a flagship trading app serving a combined 150K+ user base. I own CI/CD pipelines, staged feature rollouts, and integrations for payments, analytics, and behavior tracking.
I've spent 6+ years building Android products across FinTech, consumer finance, mobility, GPS tracking, and enterprise dashboards. I work primarily with Kotlin, Jetpack Compose, MVI/MVVM, and Clean Architecture, and I'm currently exploring Spring Boot to better understand the backend systems behind the products I build.
Experience
Work history, roles, and key accomplishments
Led Derayah Smart from concept to launch in 8 months using Jetpack Compose and MVI — 6.3K+ installs at a 0.68% crash rate.
Scale and maintain the flagship trading app: 121K+ installs, 50K+ active devices, part of a combined 150K+ user base.
Own CI/CD pipelines and feature-flag rollouts, enabling reliable bi-weekly releases with safe, staged feature launches.
Integrated Moyasar for secure pay
Built a real-time negotiation module between drivers and passengers with live state sync and a responsive UI.
Implemented Google Maps integration and optimized routing for accurate trip estimation and live tracking.
Refactored legacy code to modern MVVM, resolving long-standing architectural bottlenecks and race conditions.
Diagnosed and fixed critical crashes in tracking and payment modules
Led Taskey from architecture through Play Store launch using Modern Android Development (MAD) practices.
Built task-lifecycle, team-collaboration, and real-time project-tracking features that improved team workflow visibility.
Owned the full release cycle — app signing, store listing optimization, and cross-API-level compatibility.
Led Android development in close collaboration with Backend and UI/UX to define API contracts and user-facing flows.
Architected the app from scratch using MVVM and Clean Architecture for a modular, maintainable codebase.
Built secure core financial modules with a focus on clean code and performance ahead of internal handover.
Helped scale the Souhoola BNPL app to 1M+ downloads within an Agile team using Bitbucket and CI/CD.
Modernized the UI with a mix of XML and Jetpack Compose during the transition period.
Applied MVVM and Clean Architecture to improve testability and scalability.
Partnered with Backend and UI/UX to deliver financial onboarding and KYC flows.
Built enterprise GPS-tracking and ERP dashboard apps in Kotlin and Java.
Integrated Google Maps API and Firebase for real-time data sync.
Developed and maintained a high-traffic news app for the UAE market, focused on real-time content delivery.
Applied clean code practices in Java and collaborated with design on reader experience.
Built a custom Payment SDK for secure Android business transactions; managed app state with LiveData.
Worked as Android Developer at ابداع تك.
Education
Degrees, certifications, and relevant coursework
Mansoura University
Bachelor of Engineering, Communication and information
2015 - 2020
Tech stack
Software and tools used professionally
Availability
Location
EgyptAuthorized to work in
Job categories
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