Essential Skills
High-Performance Networking:
- InfiniBand Mastery: Deep operational knowledge of NVIDIA Quantum InfiniBand switches, cable types (NDR/HDR), and troubleshooting commands.
- AI Ethernet (RoCEv2): Solid understanding of RDMA over Converged Ethernet (RoCEv2), including the configuration of PFC and ECN on switches (Spectrum/Arista/Cisco/Juniper).
- Fabric Management: Experience with NVIDIA UFM (Unified Fabric Manager) for managing large-scale fabrics.
Automation & Tools:
- NetDevOps: Proficiency in Ansible for network automation (e.g., ansible-networking collections).
- Linux Networking: Comfortable navigating Linux CLI to troubleshoot host-side networking (ip link, tcpdump, sysctl tuning).
- Protocol Knowledge: Practical implementation skills in BGP, EVPN, and VXLAN for multi-tenant AI clouds.
Desirable Experience
- Cisco AI Integration: Experience with Cisco Nexus Dashboard or Cisco 8000 series in an AI context.
- DPU Configuration: Experience configuring NVIDIA BlueField DPUs and working with the DOCA framework.
- Optical Networking: Ability to interpret transceiver signal levels (DOM/DDM) to diagnose Layer 1 optical faults.
- AI Fabric Orchestration: Experience deploying and managing AI clusters using Netris or Cisco Nexus Hyperfabric AI to automate fabric provisioning and operations.
Certifications
Highly Desirable:
- NVIDIA-Certified Professional: AI Networking (NCP-AIN)
- NVIDIA-Certified Associate: AI Infrastructure and Operations (NCA-AIIO)
- Cisco Certified Network Professional (CCNP) Data Center
Success Metrics (KPIs)
- Fabric Efficiency: Achieving >95% effective bandwidth efficiency on NCCL-test benchmarks across the provisioned cluster.
- Layer 1 Accuracy: Zero "ghost links" or unstable connections handed over to the Compute team (all bad cables identified during the burn-in phase).
- Ticket Velocity: Consistently meeting SLAs for network-related support tickets.
About the Role
The HPC Engineer - Network acts as the primary execution engine for the connectivity that binds the AI Factory together. While the Domain Architect designs the topology and the Senior Engineer directs the squad, you are the "Builder" responsible for configuring, stabilising, and tuning the high-speed interconnects. You are a "doer" who is as comfortable debugging a flapping InfiniBand link via CLI as you are pushing a configuration update to fifty switches using Ansible.
As a System Integrator, we design and deliver bespoke, high-scale AI factories. In this role, you will move beyond standard enterprise networking (campus/wifi) to execute the deployment of lossless, high-bandwidth fabrics for NVIDIA SuperPOD, NVIDIA BasePOD, and Cisco AI Factory environments.
In this role, you will operate with a 100% focus on Delivery, executing the Low-Level Designs (LLD) assigned by your Squad Lead. You will own the "Network" in the critical "Compute-Network-Storage" triad, ensuring that the GPU compute nodes can communicate at line rate without congestion.
Key Responsibilities
- Fabric Configuration & Provisioning
- Switch Configuration: Execute the configuration of high-performance switches (NVIDIA Quantum InfiniBand, NVIDIA Spectrum-X Ethernet, Cisco Nexus) using defined templates and automation.
- NetDevOps Execution: Run and maintain Ansible playbooks to push configurations, update firmware (Cumulus/NX-OS), and enforce compliance across the fabric.
- Subnet Management: Configure and tune NVIDIA Unified Fabric Manager (UFM) to ensure optimal routing and fault tolerance.
- Host Networking: Assist the Compute team in configuring host-side adapters (ConnectX SuperNICs, BlueField DPUs) to ensure correct IP addressing, MTU, and driver parameters.
- Validation & Performance Tuning
- Link Validation: Verify physical connectivity and link health using tools like ibstat, ibdiagnet, and ethtool to identify faulty cables or transceivers immediately after installation by Field Engineers.
- Performance Testing: Execute network-specific benchmarks (e.g., ib_write_bw, ib_send_bw, NCCL-tests) to validate that the fabric is delivering full bi-sectional bandwidth and low latency.
- Congestion Control: Implement and tune Quality of Service (QoS) settings, including Priority Flow Control (PFC), Explicit Congestion Notification (ECN), and Data Center Quantized Congestion Notification (DCQCN) to prevent packet loss and optimize throughput in RoCEv2 environments.
- Operations & Support
- Fabric Telemetry: Configure monitoring agents (e.g., Prometheus node exporters, UFM Telemetry) to visualize traffic flows and detect "tail latency" issues.
- Ticket Resolution: Handle L2 support tickets for network issues, such as "Node isolation," "Slow All-Reduce operations," or "Fabric flapping."
- Lifecycle Management: Execute firmware upgrades on switches and DPUs during maintenance windows, ensuring strict compatibility with the NVIDIA OFED
Skills Required
- Deep operational knowledge of NVIDIA Quantum InfiniBand switches, NDR/HDR cables, and troubleshooting commands
- Understanding of RoCEv2 and configuration of PFC and ECN on network switches
- Experience with NVIDIA Unified Fabric Manager
- Proficiency with Ansible for network automation
- Linux networking troubleshooting experience, including ip link, tcpdump, and sysctl tuning
- Practical implementation skills with BGP, EVPN, and VXLAN
- Experience with Cisco Nexus Dashboard or Cisco 8000 series in an AI context
- Experience configuring NVIDIA BlueField DPUs and using the DOCA framework
- Ability to interpret DOM/DDM transceiver signal levels for optical fault diagnosis
- Experience with Netris or Cisco Nexus Hyperfabric AI
- NVIDIA-Certified Professional AI Networking certification
- NVIDIA-Certified Associate AI Infrastructure and Operations certification
- Cisco Certified Network Professional Data Center certification
World Wide Technology Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about World Wide Technology and has not been reviewed or approved by World Wide Technology.
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Healthcare Strength — Health insurance is considered excellent and affordable, with bundled medical, dental, and vision coverage that reduces out-of-pocket costs. Wellness programs and an Employee Assistance Program further enhance access to care.
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Leave & Time Off Breadth — Generous paid time off grows with tenure, alongside paid sick days and holidays. Parental and military leave are also provided.
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Retirement Support — Financial benefits include profit sharing and a 401(k) with company matching, complemented by life and disability insurance and tuition reimbursement. These elements strengthen total rewards beyond base salary.
World Wide Technology Insights
What We Do
World Wide Technology is a systems integrator, provides information technology and supply chain solutions. Fueled by creativity and ideation, World Wide Technology strives to accelerate our growth and nurture future innovation. From our world class culture, to our generous benefits, to developing cutting edge technology solutions, WWT constantly works towards its mission of creating a profitable growth company that is a great place to work. We encourage our employees to embrace collaboration, get creative and think outside the box when it comes to delivering some of the most advanced technology solutions for our customers. At a glance, WWT was founded in 1990 in St. Louis, Missouri. We employ over 9,000 individuals and closed nearly $17 Billion in revenue. We have an inclusive culture and believe our core values are the key to company and employee success. WWT is proud to announce that it has been named on the FORTUNE "100 Best Places to Work For®" list for the 12th consecutive year!
Why Work With Us
Our extensive partnership with best in class technology companies, coupled with our strong culture allow for world class delivery of transformative business solutions driven by IT.
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