Luka N

Software developer Subris GmbH

Fiverr • Freelance

Aug 2025 - Present • 1 yr

PROJECT 1: EMS Core - Migrated codebase from VB.NET to C# * Modernized a legacy ASP.NET WebForms system into a RESTful .NET 8 Web API. * Migrated codebase from VB.NET to C#, improving maintainability, scalability, and security. * Migrated SOAP services to RESTful .NET 8 APIs. Refactored VB.NET → C# with clean architecture principles. * Modernized reporting workflows (Crystal Reports integration). * Improved performance, logging, and error handling. * Upgraded security (auth, secure configs, data protection). PROJECT 2: EMS Timekeeping – Workforce Management App * Developed a modern employee timekeeping PWA using .NET 10, Blazor WebAssembly, C#, and MudBlazor. * Implemented secure authentication with access and refresh tokens, including Microsoft sign-in. * Built online and offline workflows with local caching, queued commands, and automatic synchronization.* * Delivered time tracking, timesheets, time requests, workforce planning, compensation, and data approval features. * Integrated REST APIs, SOAP-based system initialization, GPS tracking, reports, and document downloads. * Created a responsive, mobile-first interface optimized for smartphones and tablets. * Added installable PWA support with service workers and offline availability. * Automated RESX localization across English and eight additional languages using GitHub Actions. * Structured the solution into App, Core, Infrastructure, and Models layers for maintainability and scalability. * Improved validation, error handling, user feedback, and reliability throughout the application.