Salary: 47.000 - 87.000 € per year Requirements: Degree in computer science or comparable qualification Very good knowledge of the installation, configuration, and administration of Linux systems (Red Hat) Practical experience in scripting (bash, python, ansible) Enjoy developing complex technical solutions Practical experience in the areas of computer networks (design, implementation, monitoring, troubleshooting), network security, and virtualization Confident manner when dealing with customers Excellent technical support for customers Excellent written and spoken English skills (business fluent); knowledge of other languages is an advantage Willingness to travel worldwide (30%) In-depth knowledge of at least one high-level language (Java, C/C++, Rust, Ada, etc.) is an advantage Responsibilities: Work closely with colleagues in project teams Participate in software development for air traffic control products, if interested and suitable Act as the technical interface between the customer and our internal contacts Responsible for system design and implementation of the technical system architecture Integrate our systems at our customers sites Conduct customer training on the operation and maintenance of our products Prepare and carry out customer acceptance tests (in-house and on-site) Technologies: Ada Ansible Bash Support Java Linux Network Python Rust Security System Engineer More: We are a medium-sized IT company based in Karlsruhe, Germany, specializing in developing tailored solutions for global air traffic control authorities. Our systems enhance flight security across various control centers and airports in over 80 countries. As part of the Frequentis group, located in Vienna, we offer flexible, family-friendly working hours, an open culture, permanent employment contracts, international career opportunities, a company gym, and easy access to public transport, among other benefits. Join us to make a significant impact in the field of air traffic safety. last updated 14 week of 2026