High-Performance Networking Engineer - Supercomputing jobs in United States
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xAI · 2 weeks ago

High-Performance Networking Engineer - Supercomputing

positionPalo Alto, CA
timeFull-time
remoteOnsite
senioritySenior Level
money$180K/yr - $440K/yr

xAI is focused on creating AI systems to aid humanity in understanding the universe. The High-Performance Networking Engineer will design and optimize networking solutions for large GPU supercomputing clusters, enhancing AI training and inference workloads.

Artificial Intelligence (AI)Foundational AIGenerative AIInformation TechnologyMachine Learning
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Growth Opportunities
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H1B Sponsor Likelynote

Responsibilities

Develop and tune RDMA-based communication systems leveraging NVIDIA GPUs and Mellanox NICs (InfiniBand, RoCE) for ultra-fast data transfer between nodes
Implement and optimize GPUDirect RDMA to enable direct memory access between GPUs and network interfaces, minimizing CPU overhead
Integrate RDMA solutions with Kubernetes-based workloads, ensuring seamless operation across distributed compute and storage systems
Collaborate with AI researchers and infrastructure teams to accelerate data pipelines and collective communications using NCCL and MPI
Troubleshoot and resolve performance bottlenecks in high-throughput, low-latency networking environments

Qualification

NVIDIA RDMA technologiesRust programmingC/C++ programmingMPINCCLKubernetes networkingDistributed systems optimizationPrioritization skillsCommunication skillsWork ethic

Required

Hands-on experience with NVIDIA RDMA technologies (e.g., GPUDirect RDMA, RoCE, InfiniBand) in HPC or AI supercomputing environments
Proficiency in programming with Rust, C, or C++ for low-level networking and system optimization
Familiarity with NVIDIA's networking stack, including Mellanox drivers, libraries (e.g., libibverbs), and tools (e.g., NVPeerMemory)
Experience optimizing distributed systems with MPI, NCCL, or similar frameworks for GPU-accelerated workloads
Knowledge of Kubernetes networking and integrating RDMA into containerized environments

Preferred

Background in AI/ML training workflows and their networking demands (e.g., large-scale parameter synchronization)

Benefits

Equity
Comprehensive medical, vision, and dental coverage
Access to a 401(k) retirement plan
Short & long-term disability insurance
Life insurance
Various other discounts and perks

Company

xAI

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XAI is an artificial intelligence startup that develops AI solutions and tools to enhance reasoning and search capabilities.
dateFounded in 2023
location
Burlingame, California, USA
people-size11-50 employees
web-link
https://x.ai

H1B Sponsorship

xAI has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)

Funding

Current Stage
Late Stage
Total Funding
$42.73B
Key Investors
Neptune Digital AssetsSpaceXMorgan Stanley
2026-01-06Series E· $20B
2025-12-11Secondary Market· $0.3M
2025-07-13Corporate Round· $5.32B

Leadership Team

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Toby Pohlen
Founding Member
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Recent News

Indian Express
AI showdown: ChatGPT web traffic slips as Gemini’s share rises 3.3%
2026-01-09
PitchBook
xAI jumps to 2nd place in AI model funding race with $20B Series E
2026-01-09
Verdict
Musk’s xAI secures $20bn in Series E funding round
2026-01-09
Company data provided by crunchbase