Senior Network Engineer – Datacenter & HPC Networks

Xai; Dublin; On-site; EUR 87,000 - 130,000; Full time

Benefits offered by this job

Equity

Medical coverage

Dental coverage

401(k) retirement plan

Disability insurance

Job summary

SpaceXAI is building and operating large‑scale networks underpinning training and inference infrastructure. We seek a Network Engineer who owns production network design, deployment, and operations end to end, with hands‑on responsibility rather than a NOC role, contributing to reliable and scalable architectures.

Travel to build sites may be required; you will participate in on‑call rotation and collaborate with compute, facilities, and software teams to support RoCE/NCCL and high‑performance

Qualifications

• Several years designing/operating production networks in datacenter/ISP/cloud.
• Hands-on with BGP and at least one interior routing protocol.
• Understanding of TCP/IP, VLANs, EVPN/VXLAN and optics.
• Experience troubleshooting live production network incidents and on‑call.

Responsibilities

• Design, deploy, and operate production datacenter and campus/core networks at scale.
• Own routing and switching configuration standards and change execution.
• Qualify new network platforms, optics, and topologies; contribute to capacity planning.
• Build and improve monitoring, alerting, and operational docs.
• Troubleshoot incidents end to end and drive root cause fixes.
• Automate repetitive tasks with Python/Ansible/Terraform.
• Collaborate with compute, facilities, and software teams during cluster builds.
• Support high‑performance networks (Ethernet AI/HPC) as part of the network estate.

Skills

BGP

IGP (OSPF/IS-IS)

TCP/IP

EVPN/VXLAN

Network automation

Python

Ansible

NCCL/RoCE

Tools

Arista/Cisco/Juniper

Terraform

Job description

SpaceXAI is building and operating large‑scale networks underpinning training and inference infrastructure. We seek a Network Engineer who owns production network design, deployment, and operations end to end, with hands‑on responsibility rather than a NOC role, contributing to reliable and scalable architectures.

Travel to build sites may be required; you will participate in on‑call rotation and collaborate with compute, facilities, and software teams to support RoCE/NCCL and high‑performance