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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Engineer - InfiniBand / UFM - **Company:** Lightning AI - **Location:** New York, United States - **Experience:** Expert - **Salary:** $170,000.0 - $210,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Artificial Intelligence, Systems Engineering, Border Gateway Protocol, Big Data, Ubuntu (Operating System), Common Lisp Object Systems, Software as a Service, Computer Clusters, Computer Networks, Network Congestion, Data Centers, Firmware, InfiniBand, Subnetting, Python (Programming Language), Network Layer, Linux System Administration, Network Architecture, Network Monitoring, Routing, Packet Analyzer, Remote Direct Memory Access, Ansible, Prometheus, Tcpdump, Wireshark, AI Infrastructure, High Performance Computing, System Availability, Grafana, Git, Data Center Networking, AI Platforms, SAP Ariba, Hardware Infrastructure, Restful APIs, Terraform - **Published:** July 23, 2026 - **Apply:** https://www.dice.com/job-detail/f86a52cb-edaf-4b8e-9799-c91a890819f8 ## About the Role * 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 ## Description We are seeking an experienced Senior Network Engineer (InfiniBand / UFM) to design, deploy, automate, and operate next-generation AI Factory networking infrastructure supporting large-scale GPU clusters. This role is responsible for building and maintaining high-performance NVIDIA Quantum InfiniBand fabrics that power AI training and inference environments utilizing NVIDIA UFM, NCCL, RoCEv2, and modern data center technologies., The ideal candidate has deep expertise in InfiniBand networking, NVIDIA Unified Fabric Manager (UFM), large-scale GPU deployments, Linux networking, automation, and troubleshooting distributed AI workloads. 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. ## Related Videos - [A Deep Dive on How To Leverage the NVIDIA GB200 for Ultra-Fast Training and Inference on Kubernetes](https://www.wearedevelopers.com/videos/1625-a-deep-dive-on-how-to-leverage-the-nvidia-gb200-for-ultra-fast-training-and-inference-on-kubernetes) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Dev & Test in the Cloud? Deploy your cloud environments with Ansible & Terraform](https://www.wearedevelopers.com/videos/1607-dev-test-in-the-cloud-deploy-your-cloud-environments-with-ansible-terraform) - [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch) - [Embracing the Hybrid Cloud: Unlocking Success with Ansible](https://www.wearedevelopers.com/videos/932-embracing-the-hybrid-cloud-unlocking-success-with-ansible) - [Building the Nervous System of AI - Michael Kagan (NVIDIA)](https://www.wearedevelopers.com/videos/2133-building-the-nervous-system-of-ai-michael-kagan-nvidia) ## Related Articles - [7 Cloud Computing Trends Coming in 2025 for Developers](https://www.wearedevelopers.com/magazine/412-7-cloud-computing-trends-coming-in-2025-for-developers) - [Best US AI Conferences for CTOs in 2026: Build vs. Buy, Vendor Evaluation, and Peer Intelligence](https://www.wearedevelopers.com/magazine/736-best-us-ai-conferences-for-ctos-in-2026-build-vs-buy-vendor-evaluation-and-peer-intelligence) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [The Fastest-Growing Tech Sectors to Look Out for in 2025](https://www.wearedevelopers.com/magazine/373-the-fastest-growing-tech-sectors-to-look-out-for-in-2025) - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025) - [Highest Paying Tech Companies in Europe](https://www.wearedevelopers.com/magazine/162-highest-paying-tech-companies-in-europe)