SDN Network Engineer OVS / OVN

Our client is a leading European technology organization focused on cloud computing, cybersecurity, and artificial intelligence. With a strong commitment to digital sovereignty and data protection, the company develops and operates a proprietary cloud platform that serves both internal business units and external customers. Its cloud ecosystem enables secure, scalable, and GDPR-compliant digital services for enterprises across Europe.

• Freelance cooperation

• Start date: ASAP/01.07.2026

• Duration: until 31.10.2026, with the possibility of extension for an additional 6-12 months

Requirements:

• Production experience with Open vSwitch (OVS) and OVN.

• Solid knowledge of cloud networking: VPC, NAT, VPN, BGP, VXLAN, load balancing, DNS.

• Deep understanding of the Linux networking stack: namespaces, iptables, tc, kernel subsystems.

• Experience integrating SDN solutions with OpenStack Neutron.

• Programming skills in C/C++, Go, Python, or Bash.

• Familiarity with Kubernetes networking and CNI plugins (e.g. Calico).

• DPDK experience is a plus.

• Good command of English.

Main responsibilities:

• Design and operate the software-defined networking layer for cloud infrastructure.

• Contribute to open-source projects: Open vSwitch, OVN, OpenStack Neutron, Linux Kernel.

• Design and develop networking APIs and cloud network platform products.

• Implement observability: metrics, distributed tracing, structured logging for network services.

• Build automation for network operations and operational workflows.

• Lead root cause analysis on network incidents and implement fixes.