Janusch Koza

About me

Senior .NET Expert with over 20 years of experience in the design, modernization, and maintenance of IT systems. Areas of specialization include desktop applications (WPF, WinForms) and backend systems based on ASP.NET Core.

Experience includes working with long-lifecycle systems, including large and complex legacy solutions. Responsibilities cover requirements analysis, architectural design, code refactoring, and the implementation of solutions ensuring stability, performance, and long-term maintainability. Commonly applied approaches include Clean Architecture, Domain-Driven Design (DDD), as well as the automation of testing and deployment processes.

In desktop projects, the focus is on performance, resource management, and user interface stability. In backend systems, priorities include clear API design, security, testability, and operational reliability. Experience also includes the integration of AI-based components into existing system architectures.