HPC Network Engineer

Job Title: HPC Network Engineer

Location: New York, NY

Team: Infrastructure Engineering

About the Role

We’re looking for an HPC Network Engineer with experience at a leading hyperscaler or large-scale tech company to help design and operate the network infrastructure that powers global trading systems.

You’ll apply expertise from building massive GPU clusters, RDMA fabrics, and lossless Ethernet architectures to create some of the lowest-latency, highest-throughput networks in the industry.

This role is ideal for engineers from top-tier tech companies who want to bring their large-scale infrastructure skills into high-performance trading.

What You’ll Do

• Design and deploy large-scale, low-latency network architectures for trading, risk, and research workloads across global data centers and colocation facilities
• Own RDMA-based GPU interconnect fabrics and lossless leaf-spine topologies optimized for high-performance computing workloads
• Build and maintain L2/L3 network topologies (routing, multicast, overlay networks) at scale, drawing on experience from AI/ML and distributed systems infrastructure
• Automate network provisioning, configuration management, and diagnostics using scripting and infrastructure-as-code practices
• Monitor and optimize network performance using observability and packet analysis tools, with a focus on collective communications and congestion control
• Partner with systems, platform, and trading teams to troubleshoot complex cross-layer performance issues in production environments
• Lead vendor selection, capacity planning, and lifecycle management for switching platforms and high-speed optics
• Support colocation builds, cross-connect provisioning, carrier diversity, and timing architectures for trading venues
• Contribute to incident response, design reviews, and continuous improvement of observability and resilience across the infrastructure

What We’re Looking For

• 8+ years of experience designing, deploying, and operating large-scale distributed systems or data-intensive backend platforms at a hyperscaler or major tech company
• Deep expertise in RDMA and lossless Ethernet architectures for GPU clusters and HPC workloads
• Proven experience with leaf-spine/Clos network designs at scale, including high-speed Ethernet switching platforms and smartNICs
• Strong Linux networking fundamentals
• Hands-on scripting/automation experience in Python, Go, or similar languages; familiarity with configuration management at scale
• Experience with container platforms and microservices, including host-level and pod networking architectures
• Excellent troubleshooting, communication, and stakeholder management skills
• Bachelor’s degree in Computer Science, Computer Engineering, or related technical field (or equivalent practical experience)

Nice to Have

• Experience supporting large-scale AI/ML or HPC workloads
• Familiarity with streaming systems and high-throughput data pipeline architectures
• Experience with performance benchmarking and profiling tools for network and system performance
• Demonstrated influence across organizations (tech lead, architect, principal/IC leadership roles) in a hyperscaler environment

What We Offer

• Competitive compensation package (base + bonus) with total compensation up to $500K–$800K+ for top candidates
• Opportunity to apply hyperscaler-grade networking expertise to one of the world’s most advanced trading and risk computing environments
• Collaborative, high-performance culture with direct impact on trading infrastructure and business outcomes
• Comprehensive benefits, professional development, and global mobility opportunities

Apply now for an confidential conversation.