Senior Software Engineer, C# / .NET – Billing System

This is a fully remote position, open to applicants in Germany.

📋 Description

• You will design, develop, and take charge of a central billing system (C# / .NET, backend), ensuring its stable operation.

• You will operate within an established .NET system landscape and take responsibility for the evolution of a long-standing codebase.

• You will analyze complex business and technical relationships, making well-informed technical decisions that sustainably enhance and modernize the system.

• You will engage with relational databases, web applications, and REST APIs in the .NET environment.

• You will perform deployments, monitor production operations, and follow issues through to deliver robust solutions.

• You will identify technical debt early, assess it realistically, and drive pragmatic, effective modernization efforts.

• Within the team, you will present technical topics clearly, uphold your decisions, and provide guidance even in challenging situations.

⛳️ Requirements

• You possess extensive experience as a software developer with C# and .NET, and are comfortable working within large, existing backend systems.

• Object-oriented development, ASP.NET, Entity Framework, REST APIs, and relational databases are fundamental skills in your repertoire.

• You are eager to work primarily in mature .NET codebases (e.g., .NET 4.7/4.8) and actively drive their modernization in a realistic manner.

• Clean Code, maintainable architectures, and automated tests are guiding principles that inform your decisions.

• You take ownership, communicate clearly, and can confidently represent technical positions.

• Experience with message brokers, CI/CD, Docker, or AI-assisted development tools is considered an advantage.

• Experience in product-focused environments such as FinTech, platforms, or SaaS enhances your profile.

🏝️ Benefits

• Support from experienced colleagues who will welcome you to the team.

• The opportunity to shape our shared future with a high level of freedom and scope for implementation.

• The chance to make an impact across the Hypoport Group and leverage support from the group.

• Trust as part of our corporate values, which we strive to uphold every day.

• A personal and flexible working environment that considers your needs.

• Company pension plan and 30 days of annual leave per year (based on a 5-day week).

• An attractive workplace with regular after-work and team events, plus the option to bring dogs to the office.

• Free daily fresh lunch, drinks, brain food, as well as fruit and vegetables.