Principal HPC Network Engineer (remote in the EU)
Mirantis
Job Description
<p><strong>Role Overview:</strong><br>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.</p><h3>Key Responsibilities:</h3><ul><li><p>Design, deploy, and maintain high-performance network infrastructures for HPC environments, with a strong focus on InfiniBand fabrics.</p></li><li><p>Troubleshoot complex network issues across InfiniBand and Ethernet environments, ensuring minimal downtime and optimal performance.</p></li><li><p>Manage and optimize InfiniBand components, including switches, HCAs, subnet managers, and fabric configurations.</p></li><li><p>Perform performance tuning, monitoring, and capacity planning for HPC networking systems.</p></li><li><p>Implement and maintain network security using Fortinet solutions (FortiGate, FortiManager, FortiAnalyzer).</p></li><li><p>Diagnose and resolve issues related to routing, switching, latency, and throughput across hybrid network environments.</p></li><li><p>Collaborate with compute, storage, and platform teams to support HPC workloads and cluster operations.</p></li><li><p>Develop and maintain documentation for network architecture, configurations, and operational procedures.</p></li><li><p>Participate in on-call rotations and provide escalation support for critical incidents.</p></li><li><p>Lead or contribute to network upgrades, migrations, and new deployments.</p></li></ul><h3>Required:</h3><ul><li><p>5+ years of experience in network engineering, with a focus on HPC or data center environments.</p></li><li><p>Strong hands-on experience with InfiniBand technologies (e.g., Mellanox/NVIDIA).</p></li><li><p>Solid understanding of networking fundamentals: TCP/IP, routing protocols (BGP, OSPF), VLANs, QoS, and network design.</p></li><li><p>Proven experience deploying and troubleshooting Fortinet solutions (FortiGate, FortiManager, VPNs, firewall policies).</p></li><li><p>Experience with network performance analysis and troubleshooting tools.</p></li><li><p>Familiarity with Linux systems and scripting for automation (e.g., Bash, Python).</p></li><li><p>Strong analytical and problem-solving skills.</p></li></ul><h3>Preferred:</h3><ul><li><p>Experience with large-scale HPC clusters or AI/ML infrastructure.</p></li><li><p>Knowledge of RDMA, MPI, and low-latency networking concepts.</p></li><li><p>Certifications such as FCSS/FCNSP (Fortinet), CCNP/CCIE, or equivalent.</p></li><li><p>Experience with automation and Infrastructure as Code tools (e.g., Ansible, Terraform).</p></li></ul><h3>Soft Skills:</h3><ul><li><p>Strong communication and collaboration skills.</p></li><li><p>Ability to work independently and handle complex technical challenges.