Principal HPC Network Engineer (remote in the EU)

We are seeking a highly skilled Senior HPC Networking Engineer to design, deploy, manage, and troubleshoot high-performance networking environments. The ideal candidate will have deep expertise in InfiniBand technologies, strong general networking knowledge, and hands-on experience with Fortinet solutions. You will play a critical role in ensuring the performance, reliability, and scalability of HPC infrastructure. Key Responsibilities: • Design, deploy, and maintain high-performance network infrastructures for HPC environments, with a strong focus on InfiniBand fabrics. • Troubleshoot complex network issues across InfiniBand and Ethernet environments, ensuring minimal downtime and optimal performance. • Manage and optimize InfiniBand components, including switches, HCAs, subnet managers, and fabric configurations. • Perform performance tuning, monitoring, and capacity planning for HPC networking systems. • Implement and maintain network security using Fortinet solutions (FortiGate, FortiManager, FortiAnalyzer). • Diagnose and resolve issues related to routing, switching, latency, and throughput across hybrid network environments. • Collaborate with compute, storage, and platform teams to support HPC workloads and cluster operations. • Develop and maintain documentation for network architecture, configurations, and operational procedures. • Participate in on-call rotations and provide escalation support for critical incidents. • Lead or contribute to network upgrades, migrations, and new deployments. Required: • 5+ years of experience in network engineering, with a focus on HPC or data center environments. • Strong hands-on experience with InfiniBand technologies (e.g., Mellanox/NVIDIA). • Solid understanding of networking fundamentals: TCP/IP, routing protocols (BGP, OSPF), VLANs, QoS, and network design. • Proven experience deploying and troubleshooting Fortinet solutions (FortiGate, FortiManager, VPNs, firewall policies). • Experience with network performance analysis and troubleshooting tools. • Familiarity with Linux systems and scripting for automation (e.g., Bash, Python). • Strong analytical and problem-solving skills. Preferred: • Experience with large-scale HPC clusters or AI/ML infrastructure. • Knowledge of RDMA, MPI, and low-latency networking concepts. • Certifications such as FCSS/FCNSP (Fortinet), CCNP/CCIE, or equivalent. • Experience with automation and Infrastructure as Code tools (e.g., Ansible, Terraform). Soft Skills: • Strong communication and collaboration skills. • Ability to work independently and handle complex technical challenges. • Detail-oriented with a proactive approach to problem-solving. What We Offer: • Operate some of the most advanced AI infrastructure environments in production today. • Work with the latest NVIDIA GPU technologies, Kubernetes platforms, and high-performance networking environments. • Help define operational standards and reliability practices for next-generation AI infrastructure services. • Influence the adoption of AI-powered operational capabilities through k0rdent AI. • Work alongside highly skilled engineers solving complex infrastructure and platform challenges at scale. • Join a growing organisation investing heavily in AI infrastructure, platform services, and operational innovation. We are a  Leader for Container Management  in G2 (#2 after AWS)! We are a  Leader for Container Management  in G2 (#2 after AWS)!