Senior Software Engineer; m​/f​/d Backend​/Fullstack Telematic Infrastructure

Your mission

As a Software Engineer in our Telematics domain, you contribute to an established, production-grade system within a mature product landscape. You work on modular C#-based components within a modern web architecture and help continuously improve stability, maintainability, and technical quality.

Our teams follow a clear build-and-run approach. This means you take responsibility for the full lifecycle of your solutions — from design and implementation to deployment and operation in containerized AWS environments.

In this role, you combine solid backend and fullstack expertise with a strong engineering mindset, actively contribute to architectural decisions, and use modern development tools – including AI-supported tools – responsibly and critically.

Your Responsibilities

• You develop, extend, and integrate modular backend and fullstack components using C# and ASP.NET Core.
• You design and optimize REST APIs and integration interfaces within our product ecosystem.
• You work in a build-and-run model, supporting your solutions from implementation to stable operation in containerized AWS environments (Docker, ECS).
• You contribute to evolving scalable software architectures and actively participate in technical decision‑making.
• You develop and maintain modern web frontends using React, Type Script, and contemporary build tools such as Vite.
• You work with infrastructure-as-code and support the evolution of scalable AWS infrastructures.
• You ensure high code quality through automated testing, code reviews, security awareness, and clean documentation.
• You use AI-assisted development tools to support coding, refactoring, and analysis, while critically validating their outputs.

• You have solid professional experience in backend or fullstack development using C# and ASP.NET Core.
• You have hands‑on experience designing REST APIs and working in modular software systems.
• You bring strong knowledge of SQL databases and data modeling.
• You have practical experience with container technologies (e.g., Docker) and ideally AWS services such as ECS.
• You are familiar with CI/CD processes and build pipelines.
• You work independently, take ownership of your components, and feel comfortable in a build-and-run environment.
• You value clean code, automated testing, security, and sustainable engineering practices.
• You communicate confidently in both German and English (minimum C1 level in both).

• A responsible role with purpose: our software products enable our customers to focus on improving the lives of their clients by giving them more time for care and support
• Exciting, challenging tasks in a dynamic, future-oriented environment
• Flexible working hours and a hybrid working model so that you can continue to organise your day flexibly
• A culture of appreciation and a harmonious working atmosphere in a growing, international company with opportunities to get involved
• A creative working environment, flat hierarchies and short decision‑making processes
• Attractive remuneration models, a permanent employment contract and an employer contribution to your company pension scheme
• Access to corporate benefits, Job Rad leasing and other mobility offers such as the fully financed Germany railway ticket

If this sounds like you, we look forward to receiving your CV including your salary expectations and earliest possible starting date via our online application form!