Senior Ethernet Network Engineer for AI & HPC Fabrics

Vailexa; Santa Clara (CA); On-site; USD 190,000 - 230,000; Full time

Job summary

Vailexa Technology is seeking a senior network engineer to design, deploy, and support large-scale Ethernet fabrics for AI and HPC workloads in our Santa Clara data centers. You will troubleshoot complex issues across optics, routing, and switching, and work closely with Linux, storage, and cluster teams to ensure high-performance, reliable networks.

The role emphasizes spine-leaf architectures, BGP/EVPN VXLAN, MLAG/ECMP, QoS and telemetry analysis, with a strong focus on automation and

Qualifications

• 7+ years in large-scale data center networking.
• Strong experience with spine-leaf design, routing, switching, and production troubleshooting.
• Hands-on skill with BGP, EVPN/VXLAN, MLAG, ECMP, QoS, PFC, RoCE considerations, and telemetry interpretation.
• Experience validating optics, breakout configurations, cable plant integrity, and port-level consistency.
• Proven ability to troubleshoot distributed application impact caused by network behavior.
• Comfort using switch CLI, automation tooling, and packet/counter analysis workflows.
• Strong documentation habits for topology, incident timelines, and remediation plans.

Responsibilities

• Deploy, validate, and support Ethernet fabrics for AI and HPC clusters.
• Troubleshoot L1–L4 issues involving optics, transceivers, cabling, VLANs, BGP, and underlay/overlay reachability.
• Validate network readiness for distributed training and large east-west traffic patterns.
• Diagnose performance issues like buffer pressure, microbursts, and QoS behavior.
• Collaborate with Linux, storage, and cluster teams to isolate host-versus-network faults.
• Review and execute change plans for switch provisioning, firmware upgrades, and topology expansion.
• Capture packet-level and counter-based data to drive root-cause analysis.
• Build standards for cable mapping, port policy, and fabric health validation.

Skills

Spine-leaf design

Routing & Switching

BGP EVPN VXLAN

MLAG ECMP QoS PFC

Telemetry interpretation

CLI automation tools

Network documentation

Tools

Prometheus/Grafana

SONiC / Cumulus Linux

Network NOS platforms

Job description

Vailexa Technology is seeking a senior network engineer to design, deploy, and support large-scale Ethernet fabrics for AI and HPC workloads in our Santa Clara data centers. You will troubleshoot complex issues across optics, routing, and switching, and work closely with Linux, storage, and cluster teams to ensure high-performance, reliable networks.

The role emphasizes spine-leaf architectures, BGP/EVPN VXLAN, MLAG/ECMP, QoS and telemetry analysis, with a strong focus on automation and