A production-style e-commerce backend built with ASP.NET Core and EF Core using Clean Architecture across domain, application, infrastructure, and API layers. Secured with JWT and Google OAuth and role-based access for User, Admin, and SuperAdmin. Redis manages cart state to ease database load. Includes API versioning, rate limiting, validation, and custom exception-handling middleware. Fully containerized with Docker Compose, logged via Serilog, and tested with xUnit through a GitHub Actions CI/CD pipeline.