Principal HPC Network Engineer (remote in the US)

Mirantis is the Kubernetes-native AI infrastructure company, enabling organizations to build and operate scalable, secure, and sovereign infrastructure for modern AI, machine learning, and data-intensive applications. By combining open source innovation with deep expertise in Kubernetes orchestration, Mirantis empowers platform engineering teams to deliver composable, production-ready developer platforms across any environment—on-premises, in the cloud, at the edge, or in sovereign data centers. As enterprises navigate the growing complexity of AI-driven workloads, Mirantis delivers the automation, GPU orchestration, and policy-driven control needed to manage infrastructure with confidence and agility. Committed to open standards and freedom from lock-in, Mirantis ensures that customers retain full control of their infrastructure strategy.  https://www.mirantis.com/ Role Overview: 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 does Mirantis offer you? - Work with an established Silicon Valley leader in the cloud infrastructure industry; - Work with exceptionally passionate, talented and engaging colleagues, helping Fortune 500 and Global 2000 customers implement next-generation cloud technologies; - Be a part of cutting-edge, open-source innovation; - Thrive in the high-energy environment of a young company where openness, collaboration, risk-taking, and continuous growth are valued; - Professional development and training; - Attend conferences and working groups; - Company outings, happy hours, hackathons, and tech talks; - Receive a competitive compensation package with a strong benefits plan. We are a Leader for Container Management in G2 (#2 after AWS)!