Job Description

We are seeking a highly skilled Senior HPC Networking Engineer to design, deploy, manage, and troubleshoot high-performance networking environments. The adecuado 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.

Qualifications

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.

Additional Information

What We Offer:

- Operate some of the most advanced AI infrastructure environments in production today.
- Work with the latest NVIDIA GPU technologies, Kubernetes platforms, and high-performance networking environments.
- Help define operational standards and reliability practices for next-generation AI infrastructure services.
- Influence the adoption of AI-powered operational capabilities through k0rdent AI.
- Work alongside highly skilled engineers solving complex infrastructure and platform challenges at scale.
- Join a growing organisation investing heavily in AI infrastructure, platform services, and operational innovation.

We are a in G2 (#2 after AWS)!

We are a in G2 (#2 after AWS)!

📌 Principal Hpc Network Engineer (Remote In The Eu) (Barcelona)
🏢 Mirantis
📍 Barcelona