● Cambodia Online Banking Contract Stamping : Built a .NET 8 system for automated bookmark text insertion, generating Word/PDF files and cutting manual work by 30%. Configured scheduled deletions for storage efficiency. Deployed the system on IIS within a VM for secure and stable operations.● Global Corporate Internet Banking : Developed with Angular 17 and .NET Core Web API in a microservices architecture with Redis, enhancing performance and scalability. Optimized the frontend using Angular Material UI, boosting user satisfaction by 40% and improving code efficiency with RxJS.● RPA Rental Management : Automated rental management with data validation, reducing labor costs by 35%. Built background services for automated emails and optimized database performance with Dapper.● Project Initialization : Developed a project setup tool allowing users to customize architecture (multi-tier or single-tier), database, and Redis caching options, reducing setup time by 25% and ensuring scalable foundations.● Built a CI/CD pipeline with Jasmine and SonarQube for testing and code quality, enabling continuous improvements.● Mentored new team members and students in full-stack Java development, providing coding exercises, concept clarification, code reviews, debugging support, and onboarding guidance.

KARZA-Photography Platform | C#, ASP.NET Core MVC, .NET Web API, Bootstrap, Vue.js, SQL Server ● Designed a Vue.js + ASP.NET Core Web API platform for photo exchange and equipment marketplace. ● Developed using C# .NET with a three-tier architecture to separate concerns, utilizing EntityFramework for data access. ● Authored 20+ APIs, achieving sub-50 ms processing time through optimized code. ● Employed Bootstrap, Media Query, and Chart.js for responsive design and data visualization.