Senior Network Engineer

What You’ll Do

• Design, deploy, and maintain large-scale NVIDIA InfiniBand fabrics supporting AI/ML GPU clusters.
• Deploy and administer NVIDIA Unified Fabric Manager (UFM) Enterprise for monitoring, provisioning, telemetry, and fabric health.
• Configure and optimize NVIDIA Quantum and Quantum-2 InfiniBand switches.
• Troubleshoot fabric performance issues impacting NCCL, MPI, GPUDirect RDMA, and AI training jobs.
• Implement and validate fat-tree, Dragonfly+, Clos, and spine-leaf network architectures.
• Perform firmware lifecycle management for InfiniBand switches, adapters (HCAs), and UFM infrastructure.
• Optimize congestion control, adaptive routing, QoS, and traffic engineering for high-performance GPU communication.
• Work closely with AI platform, GPU infrastructure, storage, and systems engineering teams to deploy scalable AI Factory environments.
• Automate network provisioning using Python, Ansible, Git, REST APIs, and Infrastructure-as-Code methodologies.
• Monitor network health using UFM telemetry, Prometheus, Grafana, and other observability platforms.
• Support high availability, maintenance windows, incident response, root cause analysis, and capacity planning.
• Participate in architecture reviews and define networking standards for AI infrastructure.

Required Qualifications

• 7+ years of data center networking experience.
• 3+ years supporting NVIDIA InfiniBand environments.
• Hands-on experience with NVIDIA UFM Enterprise.
• Experience deploying and operating Quantum and Quantum-2 InfiniBand switches.
• Strong understanding of InfiniBand Architecture, Subnet Manager (SM), Adaptive Routing, Congestion Control, Partition Keys (PKeys), LIDs, Queue Pairs (QP), Virtual Lanes (VL), Service Levels (SL).
• Strong Linux administration experience (Ubuntu).
• Experience with automation using Python and Ansible.
• Deep understanding of Layer 2 and Layer 3 networking.
• Experience with BGP, EVPN, VXLAN, and modern spine-leaf architectures.
• Experience with packet captures and troubleshooting using tcpdump, Wireshark, and ibdiagnet tools.
• Excellent troubleshooting and communication skills.

What You Bring

• 10+ years of experience in large-scale data center networking.
• Deep expertise in spine-leaf architectures and L3 fabrics.
• Strong experience with BGP, EVPN, VXLAN.
• Experience operating high-performance computing (HPC) or GPU-dense environments.
• Experience designing networks for hyperscalers, neoclouds, or high-scale SaaS infrastructure.
• Strong automation background (Python, Ansible, Terraform, or similar).
• Experience with network observability tooling and telemetry pipelines.
• Proven ability to design systems that scale to thousands of nodes.
• Strong documentation and architectural communication skills.

Nice to Have

• Experience with Netris and Terraform.
• Experience with multi-region backbone design.
• Exposure to bare-metal provisioning systems.
• Experience working in high-growth infrastructure startups.

Benefits and Perks

• Comprehensive medical, dental and vision coverage (U.S.); Private medical and dental insurance (U.K.)
• Retirement and financial wellness support (U.S.); Pension contribution (U.K.)
• Generous paid time off, plus holidays
• Paid parental leave
• Professional development support
• Wellness and work-from-home stipends
• Flexible work environment