Developed and maintained full-stack enterprise applications using ASP.NET MVC, AngularJS, Razor, C#, JavaScript, and SQL Server, contributing across frontend development, backend services, data access, and database optimization.

Built HR Portal features, including a Calendar module and Personnel Information System (PIS), by developing AngularJS controllers, services, and components while integrating frontend functionality with backend APIs. Developed iSITE system features by implementing CRUD operations and automated status synchronization using SQL Server Jobs to reduce manual updates and improve data consistency.

Developed and maintained RESTful APIs for internal and client-facing applications, implementing pagination, filtering, sorting, validation, exception handling, and logging to ensure reliable system operations. Designed and optimized SQL Server database operations through stored procedures, indexes, query optimization, and scheduled jobs to improve performance and support large datasets.

Created automated reporting solutions using Windows Services and EPPlus, generating scheduled Excel and PDF reports with automated uploads to OneDrive. Developed backend services using C# and ADO.NET to integrate application features with SQL Server databases through stored procedures.

Enhanced legacy applications by diagnosing production issues, refactoring repetitive code, and creating reusable components to improve maintainability and reliability. Developed and maintained an internal Android application using Kotlin, MVVM architecture, Retrofit, Room, and Coroutines, implementing authentication improvements to support secure access for management users.