Alaa Refaat

Owned backend development for a multi-tenant school management and LMS platform with academic and administrative workflows. Built scalable REST APIs with ASP.NET Core and Entity Framework Core, adding role-based authorization and tenant isolation. Integrated AWS services, video streaming, SMS, and Stripe for payments, and supported API testing, security validation, and Swagger/OpenAPI. Coordinated with clients and frontend teams to deliver stable production features.

Developed and maintained enterprise backend services for an ERP system across HR and Finance domains. Implemented scalable REST APIs using ASP.NET Core and followed Clean Architecture principles to improve maintainability. Validated releases through testing and system checks for accuracy and production readiness. Managed deployments on IIS, including environment configuration and performance tuning to keep services reliable.

Designed and built microservices with ASP.NET Core using DDD and CQRS to support modular backend architecture. Implemented RabbitMQ messaging to enable asynchronous communication and reduce coupling between services. Set up Azure DevOps CI/CD pipelines for consistent build and deployment workflows. Deployed services across Azure App Services and on-prem container environments and supported analytics integration for product decisions.

Built RESTful backend APIs with ASP.NET Core for a management system, following modern API design practices. Implemented authentication and authorization using ASP.NET Identity and JWT to secure API endpoints. Delivered modular backend features such as discount management and advanced search support for core application workflows.

Developed a full-featured e-commerce web application using ASP.NET MVC and SQL Server. Integrated PayPal APIs to enable secure online payments. Applied MVC architecture and best practices to create maintainable application components and database interactions.

Built a backend for an educational platform using DDD and CQRS patterns. Implemented secured APIs with JWT authentication, including REST and GraphQL endpoints for flexible data access. Added background job processing with Hangfire, notifications via Firebase services, and integrated FastAPI for selected core functionality.