Fullstack C# Developer (m/f/d)

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Optimus Search has partnered with one of Germany’s leading energy-efficient, product-based companies , dedicated to reducing CO₂ emissions and building a more sustainable future . Following a period of strong market success over the past five years, the company is now undergoing hypergrowth , offering exceptional career progression opportunities .

They are currently looking for Senior Fullstack .NET Developers to join their next-generation teams , focusing on migrating legacy systems and developing a new software architecture using the latest .NET 9 . The company operates from three locations in Germany: Ahlen , Bremen , and Cologne .

Your tasks as a Senior Fullstack Developer:

• Designing, developing, and documenting the architecture of a recently acquired product and integrating standard software solutions .
• Extracting components from legacy systems and migrating them to modern, cloud-based platforms .
• Managing system interfaces in close collaboration with cross-functional teams .
• Fullstack development with C#.NET 9 , ASP.NET Core , EF Core , Angular 19 , RxJs , NgRx , REST , Microservice Architecture , and Azure cloud services.
• Creating loosely coupled , resilient system architectures .

What we expect from a Senior Fullstack Developer:

• A passion for software engineering in a cloud environment .
• Experience with Domain-Driven Design (DDD) .
• A strong focus on code quality and test-driven development (TDD) .
• A willingness to take operational responsibility within your team.
• Fluent German (C1 level) paired with strong English skills (C1 level) .

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering, Information Technology, and Administrative

• Industries

  IT System Custom Software Development

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