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# Staff HPC Network Architect

- **Company:** Lambda
- **Location:** Manchester, UK (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Architectural Patterns, Border Gateway Protocol, Cloud Computing, Computer Clusters, Computer Networks, Network Congestion, Wavelength-Division Multiplexing, Data Centers, Ethernet, Failover, Fault Tolerance, Network Topologies, InfiniBand, Industry Standard Architecture, Network Architecture, Networking Basics, Network Planning and Design, Network Virtualization, Remote Direct Memory Access, Data Streaming, System Availability, Data Center Networking, Low Latency, Open Network Automation Platform, Oracle Cloud Infrastructure
- **Published:** October 3, 2026
- **Apply:** https://find.jobs/jobs-near-me/apply/ats-redirect/?id=2999964526-2

## About the Role

* 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., * Hands on experience with AI workload profiling, collective communication patterns (e.g., NCCL, MPI), and network tuning for distributed training.
 * Familiarity with network automation frameworks and telemetry tools.
 * Exposure to DPU/SmartNIC technologies, including NVIDIA BlueField, or similar.
 * Knowledge of large scale, multi site interconnect design, including DWDM or metro/long haul networking.
 * Experience collaborating with hyperscale or enterprise customers on highly customized network designs.

## Description

*Note: This position requires presence in our San Jose, San Francisco, or Bellevue office location 4 days per week; Lambda's designated work from home day is currently Tuesday., * 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.