🎯 Entry-level .NET Backend Developer
💡 Focused on Clean Architecture, transactional consistency, and backend system design
📍 Long An, Vietnam

• Final-year IT student at Saigon University
• Backend Intern at VNPT Long An, working with real production APIs
• Interested in backend architecture, domain modeling, and API design
• Prefer building correct and maintainable systems over feature-heavy demos

• Languages: C#, SQL
• Frameworks: ASP.NET Core, Entity Framework Core
• Architecture: Clean Architecture, CQRS, Repository, Unit of Work
• Database: PostgreSQL, SQL Server
• Security: JWT Authentication, Role-based Authorization

• Git, GitHub, Swagger
• Docker (basic)
• GitHub Actions (CI/CD – basic)

Tech: .NET 8, EF Core, PostgreSQL, CQRS, MediatR

• Designed backend architecture following Clean Architecture principles
• Implemented CQRS with MediatR to separate use cases
• Applied transactional consistency with EF Core and Unit of Work
• Used domain events to manage side effects safely

Includes a small WPF UI as an exploratory MVVM experiment (not the project focus)

🔗 https://github.com/toiQS/TaskMind

Tech: ASP.NET Core, EF Core, PostgreSQL, JWT, VNPAY

• Built RESTful APIs for authentication and product management
• Integrated VNPAY payment gateway with secure callback handling
• Optimized database queries and indexing

🔗 https://github.com/toiQS/Digital-product-trading-system

📩 nguyensieu12112002@gmail.com
💼 LinkedIn: Nguyen Quoc Sieu
🐙 GitHub: https://github.com/toiQS