We are looking for a freelance Full Stack Developer who is not afraid of legacy code for our client in the insurance industry. You will be working in a challenging environment where you will regularly come into contact with slightly older .NET technologies and integrations to the Mainframe. Your responsibilities Maintaining and further developing existing applications in C# .NET Being able to work with legacy .NET and older frameworks Building and maintaining integrations to the Mainframe Developing and optimizing WinForms and WPF applications Working independently within a team, with a focus on quality and stability Profile Experienced in C# .NET and legacy .NET techniques Knowledge of WinForms and WPF is important Experience with integrations to Mainframe is a strong asset Independent, analytical, and solution-oriented Dutch language skills are a big plus Azure 204 certification is ideal, but certainly not a requirement Practical details On-site presence on Mondays and Thursdays (2 days per week) Location: Antwerp