Staff HPC Network Architect

Jobtailor

California (MO)

On-site

USD 180,000 - 260,000

Full time

4 days ago

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Job summary

Jobtailor is seeking a Senior Network Architect to design and optimize high-performance data center networks for HPC, AI/ML, and large-scale cloud infrastructure. You will shape topology, reference designs, and multi-site roadmaps while collaborating with compute and storage teams to ensure seamless data flow with robust fault tolerance.

The ideal candidate has 7+ years in data center networking, deep InfiniBand and Ethernet fabrics expertise, and strong leadership skills to influence across

Qualifications

7+ years of experience architecting data center networks for HPC, AI/ML, or large-scale cloud infrastructure.
Deep expertise with InfiniBand HDR/NDR and advanced Ethernet fabrics incl. RoCE and RDMA protocols.
Strong understanding of data center switching architectures, congestion control (PFC, ECN), QoS, and network virtualization (VXLAN, EVPN).
Low-latency and high-throughput data paths design incl GPU-to-GPU and storage traffic optimization.
Expertise with BGP-based fabric design incl eBGP underlays, MP-BGP EVPN, ECMP, route policy, and convergence.
Experience with SDN, APIs, automation, and network telemetry.
Strong optical networking knowledge incl transceivers, fiber topologies, WDM, and link budgets.
Experience building resilient, fault-tolerant high-performance network architectures with redundancy and HA.
Excellent communication and leadership skills for cross-functional influence.
Hands-on AI workload profiling and collective communications (NCCL, MPI) familiarity a plus.

Responsibilities

Architect high-performance networking solutions for cloud platforms with ultra-low latency and high bandwidth.
Define network topology and patterns for large-scale GPU clusters, storage backends, and multi-tenant environments.
Evaluate and benchmark next-gen network technologies for AI workloads.
Develop standards, reference designs, and scalability roadmaps for multi-site/hybrid environments.
Partner with compute/storage architects to ensure end-to-end data flow and fault tolerance.
Guide network automation strategies and tooling for provisioning, telemetry, and visibility.
Mentor engineers and cross-functional teams on advanced network concepts and best practices.

Skills

High-Perf Networking

InfiniBand HDR/NDR

Ethernet Fabrics

BGP Fabric Design

Network Automation

Telemetry & SDN

GPU AI Workloads

Leadership

Ambiguity Handling

Tools

NVIDIA BlueField

DPU/SmartNIC Technologies

Job description

Architect high-performance networking solutions that power cloud platforms, focusing on ultra-low-latency and high-bandwidth connectivity
Define network topology and architectural patterns for large-scale GPU clusters, storage backends, and multi-tenant environments
Evaluate, benchmark, and select next-generation network technologies 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 for efficient provisioning, telemetry, and operational visibility
Mentor engineers and cross-functional teams on advanced network concepts, troubleshooting, and architectural best practices

Requirements

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 is nice to have
Familiarity with network automation frameworks and telemetry tools is nice to have
Exposure to DPU/SmartNIC technologies, including NVIDIA BlueField, or similar is nice to have
Knowledge of large-scale, multi-site interconnect design, including DWDM or metro/long-haul networking is nice to have
Experience collaborating with hyperscale or enterprise customers on highly customized network designs is nice to have

Core Competencies

Demonstrates expertise in architecting high-performance networking solutions for cloud platforms, focusing on ultra-low-latency and high-bandwidth connectivity. Proficient in network automation strategies, data center architectures, and mentoring cross-functional teams on advanced networking concepts.

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