Ahmed Mohammed Ali

Designed, developed, and maintained REST, GraphQL, and SOAP APIs using Node.js, Express.js, and TypeScript — serving 10,000+ active users with 99.9% uptime. Implemented JWT-based authentication, RBAC, and secure login flows; reduced unauthorized access incidents to near zero. Optimized MongoDB and PostgreSQL via indexing, connection pooling, and caching — improving average query times by 35%. Containerized microservices with Docker; deployed to AWS EC2/EKS and configured Kubernetes HPA. Configured CI/CD pipelines using GitHub Actions and Jenkins; reduced deployment time by 50%. Applied Domain-Driven Design (DDD) and Clean Architecture to decouple business logic. Leveraged low-level networking knowledge (C/C++) to optimize request handling under high concurrency. Wrote comprehensive Jest and Postman test suites, achieving about 95% code coverage.

Integrated core financial business logic into a real-time mobile FinTech application, enabling secure user transactions with sub-second latency. Led transition from an ERP proof-of-concept to production-grade API architecture, reducing manual processes by 40%. Architected a multi-layered, decoupled backend with audit logging, RBAC. Tuned PostgreSQL queries, implemented Redis caching strategies, and applied circuit-breaker patterns to ensure high availability. Conducted JVM and SQL performance profiling and implemented optimizations that improved API throughput by 20%.

Designed, documented, and implemented System, Process, and Experience APIs (RAML) to enable modular API-led connectivity across enterprise systems. Developed middleware for payment gateways, merchant services, and internal systems, improving data-flow consistency and reducing integration errors by 30%. Authored complex DataWeave scripts and aligned integration flows with backend Java services. Implemented advanced error-handling patterns and connector policies; maintained CI/CD pipelines using Maven, Bitbucket, and Jenkins. Collaborated with cross-regional teams (Egypt, UAE) to coordinate deployments and enforce governance. Used Dynatrace for APM and distributed tracing; optimized microservices performance, reducing average response time by 25%. Employed Anypoint Monitoring to track throughput and latency under peak loads and recommended scaling strategies. Active participant in sprint planning and backlog refinement within Agile squads.