Work Together

Join us

We are looking for ambitious and focused colleagues that want to help us in improving accessiblity and security in 5G networks.


Hi there, we are Radix Security.

We are Radix Security, an international startup based in the Ruhr metropolis of Bochum and Nijmegen (Netherlands). Our focus is to make mobile communication secure for everyone. In doing so, we address one of the most important topics of the current time and the coming years: secure & accessible mobile communication!

The security of 5G networks is extremely important for our daily lives. We rely on it when we use our mobile phones, but nowadays, a whole range of technologies also depend on reliable communication. However, mobile networks are incredibly complex, and ensuring their long-term security is a huge challenge for the various actors in this context.

Our Mission

The mission of Radix Security is to be a pioneer in mobile network and security research. We provide training and the necessary tools that enable our customers to design, build, and maintain a secure communication network. We offer solutions that thoroughly examine existing networks and components, identifying vulnerabilities and making network security achievable and accessible.

David Rupprecht Co-Founder of Radix Security

Our values


We value ambition and focus in our everyday work and strive to create a work environment that supports such focus. A well tought through planning ensures that we keep the focus on our work.


We embrace innovation and the intrinsic motivation of our employees to pursue new ideas. This helps us break away from the focus when needed and consider ideas that may improve our work.


We prioritize accessibility and transparency to share and disseminate knowledge among ourselves. When facing problems or questions, we encourage and embody a helpful attitude.


We provide a secure work environment, both mentally and physically. We aim to be fair to our employees and foster a culture of mutual respect and fairness, so that everyone feels comfortable in their own working environment.

Open positions

Do you love quality software and want to make the world a more secure place? Then Radix Security is the right place for you! As a software developer you will use Rust to implement security solutions and real-world pentesting tools for mobile networks. You will join a young and dynamic team where you can contribute your ideas and actively influence the future of 5G network security.

📋 Your Responsibilities

  • Developing a distributed security test suite for 5G mobile networks in a cloud-based environment.
  • Implementing network functions in Rust, based on the HTTP/REST API stack and mobile-specific byte-oriented protocols.
  • Working within a team to plan and prioritize development tasks.

🚀 Your Profile

Ideally, your profile should contain the following traits:

  • You enjoy collaborating with others to achieve common goals, and have experience working on shared projects.
  • You appreciate clear and effective communication in English.
  • You have experience in software development in any programming language.
  • You have basic networking knowledge, preferably with REST APIs.
  • You are available on regular working hours, for at least three days a week (24h-39h/week).
  • Optional: You have a degree in IT Security, Applied Computer Science, or a similar field.
  • Optional: Background in IT security.

👋 Why us?

We are a highly motivated team that values personal development. As a start-up, we emphasize determination, curiosity, and innovation. These values weigh more for us than many years of experience in mobile technologies. In other words, the journey is more exciting for us than the destination, and we want to take this journey together. We work in a family-like atmosphere with short communication paths and are always open to new ideas and suggestions. We offer you the opportunity to unfold and make a significant contribution to the company's success. We look forward to your application.

  • Flexible working arrangements - remote or in one of our offices (Bochum or Nijmegen)
  • Salary range between 50K€-65K€ / year, depending motivational factors and work time
  • Stock options possible

Contact us!

If you are interested in working with us, please send us your CV and a motivational letter. We are looking forward to speaking to you!