Senior Network Engineer
STN•San Francisco Bay Area, CA
•Hybrid
About The Position
The Senior Network Engineer designs, deploys, and operates the high-performance networking fabric supporting GPU clusters. The role covers InfiniBand and RoCE fabrics for training workloads, customer-facing connectivity, and the wide-area network connecting STN sites and customer environments. It is shared across customers and is part of Infrastructure & DC Operations / Network Engineering. The role may be performed remotely in the US or from Pleasanton, CA in a hybrid arrangement, and reports to the Director, Network Engineering.
Requirements
- 7+ years in network engineering with data center or service provider experience.
- Deep expertise in InfiniBand or RoCE (RoCEv2), including congestion control and NCCL tuning.
- Strong knowledge of BGP, OSPF, MPLS, VXLAN, and EVPN.
- Hands-on experience with Arista, NVIDIA Mellanox/Spectrum, or Cisco platforms.
Nice To Haves
- CCIE, JNCIE, NCIE, or equivalent advanced certification is strongly preferred.
- GPU cluster networking experience at multi-thousand-GPU scale.
- SDN and automation skills, such as Ansible, Python, Nautobot, or Netbox.
- Multi-site WAN and peering experience, including IX participation.
- Familiarity with NVIDIA Cumulus, SONiC, or open networking stacks.
Responsibilities
- Design and configure InfiniBand or RoCE fabrics optimized for GPU training and distributed inference.
- Configure and operate switching, routing, and customer VLAN/VRF/VPC architectures.
- Manage BGP peering, public IP space, anycast, and DDoS protection.
- Design customer connectivity, including cross-connects, dedicated links, VPN, and SD-WAN.
- Maintain network automation, configuration management, and source-of-truth tooling.
- Coordinate with the NOC on network monitoring, alerting, and runbook authoring.
- Troubleshoot complex network issues across layers 1 through 7.
- Maintain network documentation, diagrams, and operational runbooks.
- Drive network capacity planning aligned to fleet growth and customer commitments.
- Support security and compliance audits, including SOC 2 and customer security reviews.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
