IONOS Cloud GmbH

Staff Software Engineer (f/m/d) Software-Defined Networking

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.

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The IONOS Cloud SDN Development team is seeking a highly motivated and experienced software engineer. The SDN Development team designs, develops and maintains the high-performance Software-Defined Networking (SDN) stack of IONOS Cloud: the networking foundation that connects our customers' virtual machines and cloud services. Our work spans the Linux kernel networking layer, virtual switching and the control plane. We use a range of technologies, from C/C++ and Golang for performance-critical components to Python for tooling and automation.

Tasks

Developing and supporting the scalable, high-performance SDN stack of IONOS Cloud using a range of diverse technologies.
Designing new features and adopting new technologies (both hardware and "software defined") on different components of the SDN infrastructure.
Writing and debugging C/C++ and Golang/Python code across the SDN data plane and control plane, from Linux kernel networking and eBPF to Open vSwitch/OpenFlow pipelines.
Building Python tooling and automation for testing, deploying and operating the SDN stack, and troubleshooting network issues in virtualized environments (QEMU/KVM, VirtIO).
Cooperating with other teams to ensure the smooth integration of new SDN features with different IONOS products.

Qualifications

Proficiency in C/C++ and/or Golang, plus Python, including AI-assisted development.
Experience with Linux kernel networking internals.
Knowledge of the TCP/IP protocol family and routing protocols like BGP, plus networking technologies such as Open vSwitch, OpenFlow, VXLAN, VRF and eBPF.
Experience with cloud environments, Kubernetes and virtualization technologies like QEMU/KVM and VirtIO.
Experience with the GNU toolchain (gcc, gdb, make, etc.), git and the Linux CLI.
Experience with Linux system administration and automation.
Nice to have: experience with VPP and DPDK.

Benefits

Hybrid working model.
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.

Job info

Location: Berlin
Type: Full-time
Category: Software Development
Work experience: Professionals
Reference ID: 1648

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.

IONOS SE
Recruiting Team IONOS
Hinterm Hauptbahnhof 3-5
D-76135 Karlsruhe
Jobs@ionos.com

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