Network Engineer - Datacenter & HPC Fabric Expert

SpaceXSI; Dublin (CA); On-site; USD 100,000 - 150,000; Full time

Benefits offered by this job

Equity

Medical coverage

401(k) plan

Disability insurance

Job summary

SpaceXSI is seeking a Network Engineer to design, deploy, and operate large-scale production networks for datacenters and campuses. You will own routing standards (BGP and an IGP), qualify new platforms, and contribute to architecture and capacity planning.

The role involves on-call rotations, travel to build sites, and collaboration with compute and software teams to maintain high availability of our supercompute networks. Onsite in Dublin with a competitive compensation package.

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.

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.

Skills

BGP

IPv4/IPv6

Network troubleshooting

On-call experience

Communication

Tools

Arista

Cisco

Juniper

Nvidia/Mellanox

Job description

SpaceXSI is seeking a Network Engineer to design, deploy, and operate large-scale production networks for datacenters and campuses. You will own routing standards (BGP and an IGP), qualify new platforms, and contribute to architecture and capacity planning.

The role involves on-call rotations, travel to build sites, and collaboration with compute and software teams to maintain high availability of our supercompute networks. Onsite in Dublin with a competitive compensation package.