Datacenter Network Engineer for HPC/AI Compute

SpaceXSI; Dublin; On-site; EUR 89,000 - 133,000; Full time

Benefits offered by this job

Equity

Medical coverage

401(k) retirement plan

Dental coverage

Job summary

SpaceXSI is seeking a Network Engineer to design, deploy, and operate large-scale production networks for its supercompute infrastructure in Dublin. You will own routing standards (BGP and an IGP), qualify platforms, and drive changes safely while maintaining high availability.

This role is hands-on and requires on-site presence in Dublin. You will collaborate with compute, facilities, and software teams during capacity builds and maintenance windows, with a focus on RoCE and high-speed Ethernet

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, 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.

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.
• 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.

Skills

BGP

IP routing

TCP/IP

On-call troubleshooting

Network design

Tools

Python

Ansible

Terraform

EVPN/VXLAN

RoCE/NCCL

Job description

SpaceXSI is seeking a Network Engineer to design, deploy, and operate large-scale production networks for its supercompute infrastructure in Dublin. You will own routing standards (BGP and an IGP), qualify platforms, and drive changes safely while maintaining high availability.

This role is hands-on and requires on-site presence in Dublin. You will collaborate with compute, facilities, and software teams during capacity builds and maintenance windows, with a focus on RoCE and high-speed Ethernet