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# Principal HPC Network Engineer

- **Company:** Número De
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Complex Networks, Ethernet, InfiniBand, Subnetting, Network Security, Network Architecture, Networking Basics, Performance Tuning, Computer Networking Systems, High Performance Computing, Low Latency, Fortinet
- **Published:** November 4, 2026
- **Apply:** https://www.adzuna.es/details/5952728363

## About the Role

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.

## Description

* 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.