Fares Mahmoud

Software Engineer

Revolut

Engineered 3 Java microservices using CQRS and Event Sourcing on an event-driven architecture, processing ~600K events/day. Delivered 3 endpoints of a platform migration with gradual rollouts, achieving zero-downtime releases to 2M+ users.

JavaMicroservicesCQRSEvent SourcingEvent Driven ArchitectureREST APIsE2E TestingCI CD

Software Engineer

DXC Technology

Developed Java/Spring Boot microservices and approximately 25 REST APIs with 85% test coverage for a multi-tenant digital card platform. Optimized invoice-processing performance using VisualVM, Java virtual threads, and asynchronous ActiveMQ messaging, reducing response time by approximately 60%.

JavaSpring BootMicroservicesREST APIsVisualVMVirtual ThreadsActiveMQJasper ReportsTesting

Software Engineer

Developed Java/Kotlin banking microservices integrating with core-banking services via SOAP and WSDL. Led digital card PIN set/reset workflows using HSM-backed cryptographic protection, reducing ATM and branch service requests by 70%.

JavaKotlinMicroservicesSOAPWSDLHSMsCryptographyApple PayTokenization