Fullstack / Backend Software Engineer (.NET) (m/f/d)

• Design, develop, and maintain scalable backend applications and services using C# and .NET
• Develop and maintain ASP.NET Web API and ASP.NET Core Web API services
• Design clean, reliable, and well-structured REST APIs for our applications
• Work with Entity Framework / Entity Framework Core and Microsoft SQL Server to model and manage application data
• Deploy and maintain backend services and help keep them running reliably in production
• Investigate and resolve backend, API, database, and production issues
• Work closely with the rest of the development team to turn product requirements into practical technical solutions

• A degree in Computer Science, Software Engineering, or a related field – or equivalent practical experience
• Strong experience with C# and .NET development
• Hands-on experience with ASP.NET Web API and/or ASP.NET Core Web API
• Good knowledge of Microsoft SQL Server and relational database concepts
• Practical experience with Entity Framework and/or Entity Framework Core
• Good understanding of REST API design, backend architecture, and server-side application development
• Understanding of authentication and authorisation concepts, ideally including OAuth 2.0, OpenID Connect
• Proficiency in English (German is a plus but not required) Optional qualifications**:
• Experience working with cloud platforms, ideally Microsoft Azure
• Experience with CI/CD pipelines and software deployment
• Experience with Unity or other client-side technologies
• Experience working with sports technology, AR/MR, or real-time applications
• A knowledge of and interest in golf

We offer

• A full-time role focused on scalable backend and fullstack development within a cutting-edge software company
• Work closely with an international, highly skilled development team on real-world software products
• Opportunities to learn from experienced developers, take ownership, and grow your technical expertise
• A young, international team with an open and collaborative atmosphere
• Occasional after-work activities and team events that help us stay connected beyond day-to-day work
• Flexible working arrangements and a collaborative team culture
• The opportunity to directly contribute to software used by top coaches and athletes worldwide
• An open communication and feedback culture with flat hierarchies
• A professional hardware setup incl. laptop and all necessary tools