[Remote] Network Engineer

Note: The job is a remote job and is open to candidates in USA. The client is a neocloud company building purpose-built GPU infrastructure for AI workloads. The Network Engineer will design, deploy, operate, automate, and troubleshoot high-performance network infrastructure across GPU clusters, data centres, edge connectivity, security systems, and RDMA fabrics.

Responsibilities

• Design, configuration, deployment, and tuning of high-speed network infrastructure for GPU training and inference across our clusters
• The GPU fabric itself: RDMA over InfiniBand and RoCEv2 - congestion control, PFC/ECN tuning, and Pkey/partitioning for multi-tenant isolation
• Edge routing, firewalling, and multi-homed connectivity on Juniper: BGP, public IP space, and upstream carrier relationships
• Leaf-spine data centre fabrics on NVIDIA/Mellanox Cumulus Linux, and Arista
• Network automation and infrastructure-as-code: codifying device configs, fabric buildout, and validation in Python, Ansible, and Terraform rather than keeping it in people's heads
• Observability and troubleshooting across Prometheus, Grafana, Checkmk, Wireshark, and tcpdump, with a clear point of view on what good monitoring looks like
• Network security posture alongside our security engineers: firewall policy, IDS/IPS, WireGuard VPN, and controls that hold up to SOC 2 and HIPAA
• Data centre design: structured fibre and copper cabling, and physical-layer troubleshooting during new site and cluster buildouts

Skills

• Significant experience designing, operating, and troubleshooting production network infrastructure at scale
• Deep understanding of TCP/IP, BGP, VLANs, VXLAN/EVPN, and modern data centre fabric design
• Hands-on high-performance networking for HPC or AI/ML: RDMA, InfiniBand and/or RoCE, and the tuning that makes them perform
• Production experience with NVIDIA/Mellanox Cumulus Linux and/or Arista EOS in leaf-spine topologies
• Strong Juniper routing and firewall experience (Junos)
• Fluency with network automation and IaC: Python, Ansible, Terraform, and Bash
• Comfortable with packet-level troubleshooting (Wireshark, tcpdump) and metrics-based troubleshooting (Prometheus, Grafana)
• Building or operating GPU/HPC network fabrics at scale (ConnectX, Bluefield DPU, Spectrum, Quantum, UFM, or equivalent)
• Familiarity with SDN and network-automation platforms (e.g. Netris or comparable)
• OpenStack/OVN networking, or standing up SDN on a greenfield cloud platform
• Working knowledge of NVIDIA GPU platforms (H100, B200) and their InfiniBand scale-out networking
• Exposure to AMD GPU platforms (MI-series) and their Ethernet scale-out networking
• Zero-trust network design and WireGuard VPN
• Operating under SOC 2 and/or HIPAA
• MAAS or bare-metal provisioning

Benefits

• Bonus
• Equity (RSUs - 4-year vest)
• Remote (US)

Company Overview