Engineering Case Studies
Production-grade systems designed with scalability, reliability, and clean architecture principles. Each project is a deep dive into real-world backend engineering.
Gigsly
A Cloud-Native Freelance Marketplace — Microservices at Scale
About This Project
Gigsly represents the culmination of modern backend engineering principles. Built from the ground up as a distributed system, it features independent microservices communicating through Eureka service discovery and OpenFeign declarative clients. The API Gateway handles routing, rate limiting, and cross-cutting concerns. Spring Security with JWT tokens provides stateless authentication across all services. Each microservice owns its PostgreSQL database, following the database-per-service pattern. The entire system is containerized with Docker and orchestrated using Docker Compose, enabling one-command deployment of the full distributed system.
Key Features
- Microservices Architecture with 6+ independent services
- Service Discovery via Netflix Eureka
- API Gateway with Spring Cloud Gateway
- JWT-based stateless authentication
- Reactive service communication with WebFlux
- Database-per-service pattern with PostgreSQL
- Declarative REST clients with OpenFeign
- Docker Compose orchestration
- Centralized configuration management
- Circuit breaker patterns for fault tolerance
EventSphere
Full-Stack Event Management — Seamless Booking Experience
About This Project
EventSphere is a full-stack event management platform that streamlines the entire event lifecycle — from creation and discovery to booking and attendance tracking. The backend is powered by Spring Boot with a clean layered architecture (Controller → Service → Repository), secured with Spring Security and JWT authentication. PostgreSQL stores all event, user, and booking data with optimized queries and proper indexing. The React + TypeScript frontend provides a modern, responsive interface with real-time updates. The application features role-based access control, allowing organizers to manage events while attendees can browse, book, and manage their registrations seamlessly.
Key Features
- Secure JWT authentication with role-based access
- Event CRUD with rich filtering and search
- Real-time seat availability tracking
- Booking workflow with confirmation system
- User dashboard with booking history
- Organizer panel for event management
- Responsive React TypeScript frontend
- RESTful API with comprehensive documentation
- Docker containerized deployment
- Input validation and error handling