Abdelrahman Mostafa

Software Engineer @Walaplus

Berlin, DE

Developed and enhanced a loyalty application, including payment gateway integrations and points management systems to reward and retain customers- Implemented a feature allowing users to enter match draws and track winners in each round, enriching engagement within the loyalty platform used by millions of users on the App Store and Google Play- Optimized complex MySQL queries, improving performance and reducing load times by 30%, as measured by New Relic and Sentry- Built real-time data processing using WebSockets, enabling live updates and instant user notifications- Resolved over 1,500 major and minor issues identified by SonarQube, significantly improving code quality and maintainability.