Job DescriptionLocation: US
Employment Type: Full-time
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.
- You will actively troubleshoot and resolve daily customer incident tickets to keep massive GPU training runs moving.
Build, operate, and scale next-generation GPU infrastructure:- You will be hands-on on the front lines driving daily triage, incident resolution, and SLA management for the world's most advanced NVIDIA clusters, InfiniBand/RoCE fabrics, and AI workloads.
Build the playbook, then grow into the platform:- Designed for engineers energized by standing up new operations from the ground up, this role offers a direct trajectory from operationalizing bare-metal clusters to driving platform and AI capabilities as we scale.
QualificationsRequired:- 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 We Offer:- Opportunity to work on cutting-edge HPC infrastructure.
- Collaborative and innovative work environment.
- Competitive salary and benefits package.
Additional Information 
