Reine Herbawy

• Followed 3-tier layered architecture: controller, service, repository with strict separation of concerns
• Applied Domain-Driven Design (DDD) to structure business logic and maintain modularity
• Used key design patterns: Repository, Builder, Bridge, Mapper, Factory, Singleton
• Implemented File Persistence and Database Repositories with clear abstraction layers
• Integrated JWT-based authentication, refresh tokens, and role-based access control (RBAC)
• Developed a complete Analytics API (orders, revenue, item types) with RESTful design and Swagger docs
• Built a custom parsing engine and enforced object integrity via interfaces and encapsulation
• Wrote unit tests with Jest, achieving high test coverage and ensuring production readiness
• Used Winston for structured logging and health check endpoints for monitoring
• Set up full CI/CD pipelines using GitHub Actions: build, lint, test, package, and auto-deploy Deployed