Rabia Y.

Designed and built domain‑driven REST APIs; contract‑first OpenAPI specifications, versioning strategy, pagination/sort/filter, request validation, and a standardised error model (problem‑details). Implemented Keycloak + OAuth2/JWT for core authentication; client‑credentials for service‑to‑service flows; secure endpoint configuration with Spring Security. Delivered core services with Spring Boot + JPA/Hibernate; added idempotency guards and retry‑safe patterns for critical operations.

Implemented Kafka-based event processing to track when users entered or left geofenced retail locations, enabling reliable, near-real-time location checks. Used RabbitMQ for reliable messaging between microservices, improving decoupling and fault tolerance in critical flows. Introduced Redis caching and async processing to remove hotspots. Set up GitHub Actions CI/CD; built Docker images and a multi‑stage pipeline (build→test→package→deploy); semantic versioning and release notes automation.

Founded Eleia Tech, leading development and technical strategy. Designed and developed Pati (veterinary clinic system), a scalable solution using Java 21, Spring Boot, Microservices, Docker and AngularJS. Managed deployment, architecture, and optimization for seamless performance.

Developed and optimized features for the Health Claim project, reducing manual processing from 1 hour to 3 seconds. Built and maintained Spring Framework services and front-ends, enhancing customer experience. Defined requirements, wrote unit tests, and validated services using Swagger. Ensured high-quality standards through code reviews and mentored junior developers.