You are passionate about developing stable and scalable backend systems
Design, develop and implement robust and scalable backend services using C# and .NET
Design and deliver RESTful APIs (including clear API documentation) for our frontend and external partners
Integrate external APIs and ensure smooth data exchange
Implement authentication and authorization concepts, preferably using OAuth 2.0 and Microsoft Entra ID
Develop and maintain data storage solutions with Microsoft SQL Server, either on-premises or in the Azure cloud
Implement logging, monitoring and tracing solutions to track application performance and load
Ensure code quality through unit and integration tests as well as code reviews
Contribute to CI/CD pipelines using Git, GitLab and GitLab Runners

Strong experience in backend development with C# and modern .NET versions (.NET 8+)
Confident working knowledge of relational databases, particularly Microsoft SQL Server
Extensive experience developing RESTful APIs and an appreciation for good documentation
Familiarity with authentication and authorization mechanisms such as OAuth 2.0 and Microsoft Entra ID
Understanding and application of software architecture principles (e.g., microservices, Clean Architecture, Domain-Driven Design)
Team player with experience in code reviews and creating unit and integration tests
Enjoy working cross-functionally and actively collaborating with frontend teams and other stakeholders
Solution-oriented, analytical mindset and a structured way of working

Remote work: Work 100% remotely
Structured processes: Organized using Jira and Confluence
Flexible working hours: Within business hours and the team’s minimum coverage you are flexible and maintain your own working time account
Vacation: 30 days from the start — plus December 24 and 31 off
Permanent employment contract: Security through corporate affiliation
Company pension plan: Voluntary employer contributions for your financial security in retirement
Subsidized disability insurance with a simplified enrollment process
Subsidy for Deutschlandticket and JobRad: Discounted public transport pass and bike leasing
Additional bonuses: Annual bonus
Corporate Benefits: Numerous discounts via the benefits portal for EOS employees

Backend Developer, .NET

Key skills