Software Engineer (f/m/d) Golang (VNF)

At IONOS, the leading European provider of cloud infrastructure, cloud services and hosting services, you will work together with a wide range of teams. We are characterized by open structures, a friendly working culture and flat hierarchies with a strong team spirit. We firmly believe that work and fun are compatible, and offer you the right environment for this. Our constant growth means that we are always looking for new colleagues. Become part of IONOS and grow with us.

Are you passionate about developing cutting-edge Virtual Network Functions (VNF) for scalable, high-performance cloud systems?

We are looking for a talented VNF Software Engineer to join our team of experts. In this role, you'll tackle complex technical challenges, work with the latest technologies, and contribute to building next-generation virtualized environments for firewalls, VPNs, load balancers, and more.

Tasks

• Develop and maintain modern, scalable Virtual Network Functions (VNF) for IONOS Cloud using Go (primary) or C/C++.
• Design and implement new features while integrating cutting-edge networking technologies such as Open vSwitch, OpenFlow, VXLAN, VRF, and eBPF.
• Solve complex problems like distributed scalability, real-time traffic handling, and node optimization.
• Collaborate with other teams to seamlessly integrate VNFs with IONOS products.
• Work on architecture design, POCs, and decision-making for key features and enhancements.

Qualifications

• 3+ years of experience in software/system development.
• Advanced programming skills in Go (mandatory) and/or C/C++.
• Strong Linux experience, including knowledge of GNU toolchains (gcc, gdb, make), CLI, and system administration.
• Hands-on experience with Kubernetes, containerization tools and/or virtualization technologies like KVM, QEMU, VirtIO, etc.
• A problem-solving mindset and enthusiasm for collaborating in a team-oriented environment.

Nice to have:

• Solid understanding of the TCP/IP protocol stack and technologies like OpenFlow, VPP, and DPDK.
• Experience with Linux Kernel internals, eBPF, and troubleshooting distributed systems.
• Familiarity with Go frameworks/tools like Gin, Echo, gRPC, or Go modules is a plus.

Locations: Berlin or Karlsruhe

Benefits

• Hybrid working model with home office option.
• Flexible working hours through trust-based working hours.
• At some locations a subsidized canteen and various free drinks.
• Modern office space with very good transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offers, such as sports and health courses.

About IONOS

IONOS is the leading European digitalization partner for small and medium-sized businesses (SMB). The company serves around six million customers and operates across 18 markets in Europe and North America, with its services being accessible worldwide. With its Web Presence & Productivity portfolio, IONOS acts as a 'one-stop shop' for all digitalization needs: from domains and web hosting to classic website builders and do-it-yourself solutions, from e-commerce to online marketing tools. In addition, the company offers Cloud Solutions to enterprises who are looking to move to the cloud as their businesses evolve. 

We value diversity and welcome all applications - regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age as well as sexual orientation and identity, physical characteristics, marital status or any other irrelevant factor subject to applicable law.