Hi, I'm Builder 👋

Software Engineer | C# / .NET · Full-Stack · Backend

C# / .NET · ASP.NET Core · React / TypeScript · Java / Spring Boot · SQL

I build enterprise applications that handle complex business rules, transactional consistency, and operational workflows. My professional experience primarily covers three types of enterprise systems:

• Banquet Booking and Venue Operations Systems — Handling venue booking conflicts, orders and sub-orders, equipment and catering services, pricing rules, status transitions, historical data compatibility, and cross-table transactions.
• PDA / RFID Warehouse and Inventory Systems — Supporting receiving, inventory, and return workflows, including IMEI validation, quantity verification, and duplicate inventory checks. Transaction and rollback mechanisms are used to maintain inventory data consistency.
• Customer, Contract, and Project Workflow Systems — Managing business relationships across Customer → Contract → Service, as well as employees, departments, group-based permissions, approval roles, and approval flows.

My current work focuses on C# / .NET enterprise application development, covering WinForms, ASP.NET Core REST APIs, React / TypeScript, SQL Server / Oracle, and the systematization of real-world internal business operations.

Engineering Focus

Complex Business Rules · Transaction Management · Data Consistency · Workflow & Authorization · Legacy System Refactoring · API & Database Integration

Beyond implementing requirements, I continuously improve existing systems by gradually separating UI, business logic, and data access responsibilities. This helps improve maintainability, testability, and long-term extensibility.

Outside of work, I continue exploring and building projects with Java / Spring Boot, Go, PostgreSQL, React Native, and Unity / VR. These projects allow me to further practice domain modeling, persistence architecture, concurrency, real-time communication, and cross-platform system integration.