You develop and operate backend applications based on C# and .NET within a primarily Microsoft-based tech stack (including Windows Server, MS SQL).
You implement new features and evolve existing applications — from requirements analysis through implementation to operation.
You work closely with product managers and stakeholders, challenge requirements, and contribute your own technical solutions.
You are part of an agile team (Scrum, with a tendency toward Kanban) and actively shape the development process.
You ensure software quality through testing, code reviews and clean architectures.
You support the building and further development of the engineering team and contribute as a sparring partner or technical driver.

Strong knowledge of C# / .NET
Experience with relational databases (e.g., Microsoft SQL Server) and API interfaces.
A solid understanding of software architecture, clean code, maintainability, performance and security.
Experience with agile development processes and enthusiasm for cross-team collaboration.
Willingness to treat testing as an integral part of your development work (unit, integration, E2E tests).
Very good English skills (at least C1) and good German skills (at least B2).
Desire to take responsibility, share knowledge and help shape technical standards.

Events such as team activities, a summer party and regular offsites strengthen team cohesion and ensure cross-location exchange.
We respond to employee needs through regular 1:1s, anonymous employee surveys and annual culture feedback.
Our offices offer height-adjustable desks, stability balls, free drinks & snacks and much more.
You can even bring your dog to the office.
We offer 30 days of vacation per year for full-time employees.
We also have internal special leave arrangements and the option for flexible leave.
In addition, we enable mobile working in accordance with company policy.
Look forward to comprehensive onboarding on various topics, a welcome event and an open-minded team.
During your onboarding period you will be supported by a buddy.
You benefit from Hypoport perks, e.g., discounts in 300 online shops, company glasses scheme, special conditions for a JobRad and many more.

Senior C# Developer

Key skills