Software Developer .NET C#

VEXCASH AG is Germany’s leading online provider of short-term loans.

We offer our customers a quick and straightforward solution to bridge the gap until their next payday.

More than 800,000 customers already rely on our service.

Thanks to our innovative approach, they can secure financial liquidity without having to commit to a long-term agreement.

Tasks We are looking for an experienced .NET/C# Developer to join our team and contribute to the development of modern web applications in the FinTech sector.

You will work in a skilled and collaborative environment using modern Microsoft technologies (.NET 8+) to build reliable, maintainable, and high-quality software solutions.

As a full-stack developer, you will contribute across the entire application stack, with a primary focus on backend services and APIs, while also supporting frontend development where needed.

Responsibilities: Develop clean, maintainable, testable, and reusable C# code based on business requirements and user stories Design, develop, and maintain applications using ASP.NET Core MVC, ASP.NET Core Razor Pages, and Entity Framework Core.

Design and implement RESTful APIs following best practices and scalable architecture principles Contribute to frontend development using HTML5, CSS, Bootstrap, JavaScript, and TypeScript Work with SQL Server, including data modelling, query optimization, and performance tuning Implement automated tests (unit and integration) to ensure software quality Collaborate using Git-based workflows and participate in code reviews Contribute to CI/CD pipelines and automated deployments Work with Microsoft Azure services and cloud-based architectures Analyze, troubleshoot, and resolve technical and performance issues Contribute to continuous improvement of code quality, architecture, and development processes Requirements Requirements: Strong professional experience with C# and the .NET ecosystem Hands-on experience with .NET Framework (maintenance and enhancement of legacy applications) and .NET 8+ / ASP.NET Core for modern application development Solid experience with ADO.NET and Entity Framework Core Experience designing and building RESTful APIs Strong knowledge of SQL Server, relational database design, and query optimization.

Experience with frontend technologies (HTML5, JavaScript/TypeScript, CSS) Experience with automated testing frameworks (e.g., xUnit, NUnit, MSTest) Good understanding of software architecture principles and design patterns Experience using Git in collaborative development environments Familiarity with CI/CD pipelines and tooling Experience with Microsoft Azure Experience working in agile development environments Strong problem-solving skills and focus on code quality Good command of English and German