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 tool