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Network Engineer

xAI· Engineering
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Dublin$100k - $150kPosted 1mo ago

About the role

SpaceXSI network engineering role focused on building and operating large-scale networks for training and inference infrastructure, including datacenter, core, edge, and campus networks. Hands-on engineering position owning design, deployment, and operations end to end with on-call rotation and potential travel to build sites.

Responsibilities

  • Design, deploy, and operate production datacenter and campus/core networks at scale
  • Own routing and switching configuration standards (BGP and at least one IGP such as OSPF or IS-IS), including change design, peer reviews, and execution
  • Qualify new network platforms, optics, and topologies; contribute to architecture and capacity planning
  • Build and improve monitoring, alerting, and operational documentation so issues are caught and fixed quickly
  • Troubleshoot Layer 2/Layer 3 incidents end to end — from link flaps and optics through routing and traffic engineering — and drive root cause and lasting fixes
  • Automate repetitive network tasks with Python, Ansible, or similar tooling where it reduces toil
  • Partner with compute, facilities, and software teams during cluster build-outs and maintenance windows
  • Support high-performance / supercompute network environments (Ethernet AI/HPC fabrics, RoCE/RDMA-capable designs) as part of the broader network estate — deep specialist RoCE/NCCL ownership is a plus, not the bar for this seat

Qualifications

  • Several years designing and/or operating production networks in a datacenter, ISP, cloud, or large enterprise environment
  • Solid hands-on experience with BGP and at least one interior routing protocol
  • Working knowledge of TCP/IP, VLANs, EVPN/VXLAN or equivalent datacenter overlays, and optics / high-speed Ethernet
  • Experience troubleshooting live production network incidents and participating in on-call
  • Strong written and verbal communication; clear change docs and incident notes

Skills

Required:BGPInterior routing protocols (OSPFP/IS-IS)TCP/IP, VLANs, EVPN/VXLAN
Nice to have:Network automation

Benefits

  • equity, comprehensive medical, vision, and dental coverage,
  • access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks
Last updated Oct 14, 2026. Interested? Apply on the company site.

About xAI

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