Senior Software Engineer 100%

Ref 2583168 \| Date: 5 Oct 2026Ärztekasse Genossenschaft provides business process outsourcing and eHealth solutions to health professionals so they get relief from administration and can focus on medical work.In the context of an innovation initiative, Ärztekasse is renewing and extending their products. To support this digitalization step, we are looking for smart and experienced engineers to contribute and shape clever and creative solutions for a meaningful industry.**Senior Software Engineer (m/w) 100%**### Main Tasks* Design, implementation \& maintenance of applications and services for our billing tracking products* Collaboration with requirements engineers and business analysts to detail and clarify understanding and requirements* Support of testing team in regards of functional and non\-functional tests of the implemented applications* Participation in definition and design of solution architectures, under the guidance of the tech lead* Documentation of code and design* Implementation of proofs of concept to validate and show solution architectures* Participation in the definition of technology and tool stacks to be used for new solutions* Contribute to raising the technical level of the team through code reviews and day\-to\-day collaboration with less experienced colleagues### Requirements* Bachelor degree or higher in Computer Science, Computer Engineering or the equivalent in experience* At least 8 years of experience in software development* Strong backend development experience with server\-side development (WebAPI, multi\-threaded systems) using .NET (C\#, Entity Framework, Dependency Injection)* Strong experience with SQL language (Postgre, SQL Server, Sybase)* Knowledge of architecture and development patterns ( Microservices, CQRS, Domain Driven Design, SOLID, Unit Testing)* Experience with CI/CD (Git, Azure Devops, Bitbucket, Bamboo)* Knowledge of authentication/authorization services and integration is a plus* Knowledge