Fullstack C# Developer (m/f/d)

Company Overview:
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).
• Excellent communication skills.
• A willingness to take operational responsibility within your team.
• Fluent German (C1 level) paired with strong English skills (C1 level).