Enterprise distributed system on AWS EC2 using Self-Hosted GitHub Runners. Microservices architecture with Spring Cloud, Kafka, RabbitMQ, and centralized monitoring.

Enterprise-level system for healthcare centers using Java 17, Jakarta EE, and Spring MVC. Complete management of medical inventory, schedules, and patient records with 99.9% availability. Led team of 5 developers delivering MVP 25% ahead of schedule.

Enterprise API for NGO volunteer management with JWT authentication and role-based access. Infrastructure as Code with Terraform managing AWS EC2, Cloudflare R2, and D1 database. CI/CD pipeline with Jenkins for automated testing and deployment.