Othman El Moudden

Application Architecture and Design: I designed a distributed microservices architecture using Spring Boot and NestJS, focusing on modularity, scalability, and fault tolerance. Key components included an API Gateway for routing, a Config Server for centralized configuration, and Service Discovery for dynamic service registration. The layered architecture integrated Angular for front-end delivery with REST APIs to ensure seamless backend communication. Database Design and Management: Each microservice owned its database to ensure loose coupling and independence. To handle distributed transactions, I employed SAGA and CQRS patterns, achieving eventual consistency while maintaining reliability. Performance was enhanced using read/write separation and caching layers like Redis. Observability and Performance Optimization: I integrated Prometheus, Grafana, and Loki to monitor, log, and visualize system health and performance. Configured health checks automated failure recovery, while circuit breakers and rate-limiting mechanisms ensured fault tolerance and stability. Development Workflow: I streamlined CI/CD workflows using Jenkins for custom pipeline orchestration and GitHub Actions for seamless integration and automation. They managed deployments declaratively for consistent updates. APIs were documented with OpenAPI/Swagger, facilitating team collaboration and developer onboarding. Collaboration and Mentorship: I collaborated with Angular teams to ensure smooth integration between front-end and backend services. Additionally, I mentored team members on microservices design, database principles, and distributed systems, fostering technical growth and excellence.

Developed and deployed new features for web applications managing various card types, including VISA and MASTERCARD (Prepaid, Corporate, Individual). Enhanced payment systems to improve user experience and transaction efficiency. Generated detailed monthly reports on billing, user activities, and statistics to support data-driven decision-making. Diagnosed and resolved critical system issues, including security vulnerabilities and feature-related bugs, ensuring application reliability and stability. Conducted unit and integration testing to maintain high code quality and performance before production deployment. Maintained and updated legacy Java codebases to ensure stability and compatibility with new requirements. Developed and integrated APIs for mobile banking applications on Android and iOS platforms, including real-time notifications using JSF, Node.js, and Firebase. Collaborated with clients during testing phases to ensure seamless implementation and functionality of new features.