Senior C# Backend Developer (m/w/d) - Leidenschaft trifft auf Code

Your role

• Development, enhancement, and maintenance of backend services with a focus on C# and .NET (Core)
• Analysis, adoption, and targeted optimization of existing external solutions
• Identification of refactoring potential as well as structured and low-risk modernization of existing systems while maintaining operational stability
• Ensuring high quality standards with regard to code quality, performance, and maintainability
• Design and implementation of service integrations via REST APIs as well as event-driven architectures (e.g., Kafka, SQS)
• Close and structured collaboration with Quality Assurance (QA), DevOps, and other backend teams
• Active participation in the design, implementation, and optimization of CI/CD pipelines as well as deployments in the AWS Cloud
• Ensuring software quality through the use of unit tests and integration tests (e.g., with xUnit or NUnit) as well as common mocking frameworks
• Strong sense of responsibility (“ownership”) and the ability to collaborate effectively in distributed, international teams.

Your profile

• Several years of experience (5+ years) with C# and .NET Core, as well as practical experience in running applications on Linux (Docker/Kubernetes)
• Solid expertise in microservices architectures, API design, cloud technologies (ideally AWS), as well as CI/CD and DevOps practices
• Deep understanding of CLR, async/await, memory management, and performance profiling
• Strong database knowledge in PostgreSQL (query optimization, schema design, migrations)
• Experience with observability (logging, tracing, metrics – e.g., OpenTelemetry)
• Strong quality awareness through unit and integration testing (xUnit/NUnit, mocking)
• Independent working style, team spirit, and enjoyment of working in distributed teams
• Language skills: German (B2–C1) and English (C1)
• Ideally, experience with event-driven or message-driven architectures
• Experience with Java / Spring Boot is considered a plus
• Additional advantage: knowledge of customs, tax, or compliance domains.

Der Recruiting-Prozess

Our interview process is designed to be simple, personal, and a little bit fun, so we can get to know each other naturally.

It kicks off with a short, relaxed phone chat (about 15–20 minutes) just enough to exchange first impressions and spark curiosity. Next, you’ll hop on a video call via MS Teams with someone from the team, where you can dive deeper, ask questions, and see how we collaborate day-to-day.

The final step is the most exciting: we invite you to our office! Here, you’ll try a small, hands-on case study don’t worry, it’s not a test, just a playful way for us to show how we work and for you to get a real feel of our world.

Finally, we’ll make a decision promptly openly, thoughtfully, and with a smile.

Why us?

Our office is based in Berlin-Mitte, with a flexible hybrid work model in place. You’ll be fully equipped from day one with everything you need to do your best work

We offer you a varied and challenging job in a dynamically growing company with great personal development potential. In addition to flexible working hours, we offer a modern workplace (mobile) with the freedom to help shape your own area of responsibility. Of course, you will receive an attractive compensation package and 30 days of vacation.

Our work culture is characterized by transparency, respect and personal responsibility. As an employer, we stand for all kinds of diversity - including diversity of minds, experiences and styles. We believe that a diverse workforce drives innovation and promote an inclusive workplace where all colleagues are valued and given the opportunity to fulfill their full potential.

We consider all qualified applicants for employment at eClear, regardless of race or national origin, religion or belief, gender or gender identity, sexual orientation, age or marital status. In the case of equal suitability, applicants with a severe disability will be given preference.

About us

eClear AG is a banking-regulated payment facilitator providing EU-wide customs and VAT clearing as an embedded checkout-solution for e-Commerce marketplaces and digital platforms. With our software products and services, all tax, customs and payment processes in cross-border online trade are automated and significantly simplified.