Senior Software Developer (m/w/d)

Your Role

For our development team in the Public Authorities division, we are looking for your clever mind for one of our locations in Berlin, Bonn, Borchen, Dresden, Eschborn, Essen, Hamburg, Hannover, Ilmenau, Munich, Siegen, or Stuttgart as soon as possible.

Your Tasks

• Participation in the development of our network security products
• Software development and software integration on Linux-based systems
• Contribution to secure and maintainable software
• Execution of manual and automatic tests
• Close collaboration within the team

Your Profile

• A university or university of applied sciences degree in computer science or a comparable degree
• Several years of practical experience in software development
• Knowledge of Git/Gitlab for source code management
• Familiarity with Unix/Linux concepts for system programming
• Network knowledge such as TCP/IP (IPv4 and IPv6), routing, DHCP, Netfilter
• Proficiency in C
• Knowledge of C++, Python, Javascript, Unix Shell, SQL are advantageous
• Basic cryptographic knowledge (X.509 certificates, hash functions) is helpful
• Knowledge of Debian and systemd for software integration, Linux containers for component isolation are advantageous
• Knowledge in managing virtual machines (KVM) for test automation is helpful
• Very good German and good English skills round off your profile.

Our Offer

• Real team spirit: Work in teams that drive change – no matter how complicated and extensive projects are.
• Societal relevance: We work on solutions that have game-changer qualities – in all areas of IT security.
• Individual development: Career is not a standard recipe here. We develop together and support you with what you need to move forward.
• Focus on people: Our strength lies in our diversity. We respect each other as we are. We also care about the compatibility of work, family, and private life. We have been certified here since 2025.
• Flexible working: 12 locations in Germany, shared desk model, trust-based working hours, and flexible part-time models. There is a suitable model for everyone.
• Sun, beach, or mountains: Working abroad within the EU? No problem – you can work remotely within the EU for up to 20 days per year.
• Nice benefits on top: Look forward to bike leasing, a company fitness program, a subsidized job ticket, secudog, and much more.