Staff HPC Network Architect
Lambda· Data Center Business
Hybrid (San Jose Office (First St)), Hybrid (San Francisco Office (Fremont St))$315k - $420kFull-timePosted 1mo ago
About the role
Architect high-performance networking solutions for AI cloud infrastructure, focusing on ultra-low-latency and high-bandwidth for large-scale GPU clusters, storage backends, and multi-tenant environments.
Responsibilities
- Architect high-performance networking solutions that power cloud platforms, with a focus on ultra-low-latency and high-bandwidth connectivity.
- Define the network topology and architectural patterns for large-scale GPU clusters, storage backends, and multi-tenant environments.
- Evaluate, benchmark, and select next-generation network technologies (e.g., InfiniBand NDR/XDR, RoCE, 400G-1.6T Ethernet, Ultra Ethernet, ESUN, OCI, etc) to meet AI workload requirements.
- Develop and maintain network architecture standards, reference designs, and scalability roadmaps for multi-site and hybrid environments.
- Partner with compute and storage architects to ensure seamless end-to-end data flow and fault tolerance.
- Guide network automation strategies and tooling to enable efficient provisioning, telemetry, and operational visibility.
- Mentor engineers and cross-functional teams on advanced network concepts, troubleshooting, and architectural best practices.
Qualifications
- Proven experience (7+ years) architecting high-performance data center networks, preferably for HPC, AI/ML, or large-scale cloud infrastructure.
- Deep expertise with InfiniBand (HDR/NDR) and advanced Ethernet fabrics, including RoCE and RDMA protocols.
- Strong understanding of data center switching architectures, congestion control (PFC, ECN), QoS, and network virtualization technologies such as VXLAN and EVPN.
- Skilled in designing for low-latency and high-throughput data paths, including GPU-to-GPU and storage traffic optimization.
- Expertise with BGP-based fabric design, including eBGP underlays, MP-BGP EVPN, ECMP, route policy, and convergence.
- Experience with SDN, APIs, automation, and network telemetry.
- Strong optical networking competency, including transceiver technologies, fiber types and topologies, link budgets, breakout architectures, and WDM.
- Experience building resilient, fault-tolerant high-performance network architectures with redundancy, failover, and high availability.
- Excellent communication and leadership skills, capable of influencing technical decisions across diverse teams.
- Strong ownership and can-do attitude, self-starter who feels comfortable working in ambiguity.
Skills
Required:InfiniBand (HDR/NDR)Data center switching architecturesBGP-based fabric designSDN, APIs, automation, telemetry
Benefits
- Health, dental, and vision coverage for you and your dependents
- Wellness and commuter stipends for select roles
- 401k Plan with 2% company match (USA employees)
- Flexible paid time off plan that we all actually use
Last updated Sep 17, 2026. Interested? Apply on the company site.
About Lambda
The Superintelligence Cloud
The gigawatt-scale AI GPU Cloud built for superintelligence. Featuring on-demand & reserved cloud NVIDIA HGX B200, B300, GB200, GB300 and H200 GPUs for AI training & inference.
AI trainingDeep learningGPU CloudInferenceNVIDIA GPUsliquid-ai-recruiting-targetsetter-30setter-30-2026-q1
More open roles at Lambda
- Senior Workday Integration Architect4d agoHybrid (San Francisco Office (Fremont St)), Hybrid (San Jose Office (First St)) · Data Center Business
- Workplace Coordinator4d agoSan Jose Office (First St), San Jose Office (Zanker) · G&A
- Employment Counsel4d agoHybrid (San Francisco Office (Second St)), Hybrid (New York, NY) · G&A
- Head of Tax4d agoHybrid (San Francisco Office (Second St)), Hybrid (San Jose Office (First St)) +1 more · G&A
- Controller4d agoHybrid (San Jose Office (First St)), Hybrid (San Francisco Office (Second St)) · G&A