Mahmoud A.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I’m a Senior Software Engineer with over 8 years of experience building large-scale, high-performance backend systems using Java, Spring Boot, and modern DevOps technologies. I’ve worked on enterprise-grade solutions in finance, energy, telecom, and e-commerce, always focused on clean architecture, scalability, and reliability. I specialize in microservices, distributed systems, and cloud-native development using Kubernetes, Docker, AWS, and CI/CD pipelines. My daily toolkit includes Java, Kotlin, Go, and TypeScript, backed by experience with frameworks like Spring Cloud, WebFlux, and Angular. My background includes: DXC Technology: Building pricing microservices for global fuel and charging networks. WorkMotion: Architecting finance and invoicing systems integrated with NetSuite ERP. Jumia: Developing and stress-testing payment APIs for JumiaPay’s high-traffic platform. Celfocus & Intercom: Delivering telecom and banking systems used by millions of users. I bring an engineering-first mindset: testability, performance, and maintainability come before trends. Whether it’s designing a distributed service from scratch or optimizing existing infrastructure, I build software that scales cleanly and lasts. If you need a backend engineer who can handle the full lifecycle, from architecture and code to deployment and observability, I’ll make your system robust, reliable, and production-ready.