Principal HPC Network Engineer (Remote, US)

About the role

Mirantis, a Kubernetes-native AI infrastructure company, is looking for a highly skilled Senior HPC Networking Engineer to design, deploy, manage and troubleshoot high-performance networking environments. The role focuses on InfiniBand fabrics and Fortinet solutions, and is fully remote within the United States.

Key responsibilities

• Design, deploy and maintain high-performance network infrastructures for HPC environments, with a focus on InfiniBand fabrics.
• Troubleshoot complex network issues across InfiniBand and Ethernet environments to keep downtime minimal.
• Manage and tune InfiniBand components such as switches, HCAs, subnet managers and fabric configurations.
• Perform performance tuning, monitoring and capacity planning for HPC networking systems.
• Implement and maintain network security with Fortinet solutions (FortiGate, FortiManager, FortiAnalyzer).
• Diagnose routing, switching, latency and throughput issues in hybrid networks.
• Collaborate with compute, storage and platform teams on HPC workloads and cluster operations.
• Document network architecture, configurations and procedures, and take part in on-call rotations and incident escalation.
• Lead or contribute to network upgrades, migrations and new deployments.

Required profile

• 5+ years of network engineering experience, focused on HPC or data center environments.
• Proven experience deploying and troubleshooting Fortinet solutions (FortiGate, FortiManager, VPNs, firewall policies).
• Experience with network performance analysis and troubleshooting tools.
• Familiarity with Linux and scripting for automation (e.g., Bash, Python).
• Preferred: large-scale HPC or AI/ML cluster experience, RDMA and MPI knowledge, certifications such as FCSS/FCNSP, CCNP/CCIE, and automation tools like Ansible and Terraform.

Required skills

• InfiniBand (Mellanox/NVIDIA)
• TCP/IP, BGP, OSPF, VLANs, QoS and network design
• Linux and Bash/Python scripting

What we offer

• Work with an established Silicon Valley leader in cloud infrastructure and open-source innovation.
• Professional development, training, conference attendance and company events.
• A competitive compensation package with a strong benefits plan.