Senior Software Engineer-WPF / MVVM / .NET | Legacy Application

About the role

We are seeking three Senior Software Developers to modernize a business-critical WPF application with significant technical debt. The role will focus on progressively refactoring tightly coupled legacy code into a modular, testable architecture using the MVVM pattern and a dedicated service layer, while enabling ongoing business feature development to continue.

What you'll do

• Refactor legacy WPF modules and screens into a clean MVVM architecture with clear separation of concerns
• Design and implement service-layer abstractions that decouple ViewModels from business logic and infrastructure dependencies
• Apply dependency injection and inversion-of-control practices using suitable .NET containers, including Microsoft.Extensions.DependencyInjection where appropriate
• Create and maintain automated unit tests using frameworks such as xUnit or NUnit, with mocking through Moq or equivalent tools
• Preserve existing business behavior during incremental migration and support coexistence between legacy and modernized modules

What you need

• .NET
• C#
• Unit testing
• Any graduate