Senior Network Engineer (InfiniBand / UFM)

Location: New York, New York, United States; San Francisco, California, United States; or Seattle, Washington, United States. Hybrid work model for office-based teams.

Annual base salary: $170,000–$210,000 USD, plus discretionary bonus, equity, and eligible-role benefits.

Company

hirify.global builds an end-to-end platform for developing, training, and deploying AI systems, combining developer-focused software with large-scale AI Factory compute.

What you will do

• Design, deploy, and maintain large-scale NVIDIA Quantum and Quantum-2 InfiniBand fabrics for AI and ML GPU clusters.
• Deploy and administer NVIDIA UFM Enterprise for provisioning, monitoring, telemetry, and fabric health.
• Troubleshoot performance issues affecting NCCL, MPI, GPUDirect RDMA, and distributed AI training workloads.
• Implement and optimize fat-tree, Dragonfly+, Clos, and spine-leaf architectures, including congestion control, adaptive routing, QoS, and traffic engineering.
• Automate network provisioning and observability with Python, Ansible, Git, REST APIs, Infrastructure as Code, Prometheus, and Grafana.
• Support high availability, firmware lifecycle management, incident response, root cause analysis, capacity planning, and networking standards for AI infrastructure.

Requirements

• 7+ years of data center networking experience, with 3+ years supporting NVIDIA InfiniBand environments; 10+ years is expected for large-scale data center networking.
• Hands-on NVIDIA UFM Enterprise experience and experience operating Quantum and Quantum-2 InfiniBand switches.
• Deep knowledge of InfiniBand Architecture, Subnet Manager, adaptive routing, congestion control, PKeys, LIDs, QPs, VLs, and SLs.
• Strong Ubuntu/Linux administration, Python and Ansible automation, and Layer 2/Layer 3 networking experience.
• Experience with BGP, EVPN, VXLAN, spine-leaf architectures, packet captures, tcpdump, Wireshark, and ibdiagnet.
• Strong troubleshooting, documentation, architectural communication, and collaboration skills, with the ability to design systems scaling to thousands of nodes.

Nice to have

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

Culture & Benefits

• Medical, dental, and vision coverage for employees and eligible dependents.
• RSUs, 401(k) matching in the U.S., and comprehensive paid leave programs.
• Unlimited PTO, company holidays, floating holidays, and a two-week company-wide winter break.
• Paid parental and family leave, wellness and work-from-home stipends, and an annual learning allowance.
• Four weeks of paid sabbatical leave after four years of service, flexible schedules, and complimentary office meals.