High-Performance Networking Engineer - SupercomputingSan Francisco & Palo Alto, CA

High-Performance Networking Engineer - Supercomputing

High-Performance Networking Engineer on xAI's Supercomputing team, you will design and optimize low-latency, high-bandwidth networking solutions using NVIDIA's RDMA-capable technologies to support some of the world's largest GPU supercomputing clusters. These clusters drive AI training and inference workloads, demanding cutting-edge performance and scalability.

Focus

• 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.

Ideal Experience

Tech Stack

Annual Salary Range

$180,000 - $440,000 USD

xAI is an equal opportunity employer and does not unlawfully discriminate based on race, color, religion, ethnicity, ancestry, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, age, disability, medical conditions, genetic information, marital status, military or veteran status, or any other applicable legally protected characteristics. Qualified applicants with arrest or conviction records will be considered for employment in accordance with all applicable federal, state, and local laws, including the San Francisco Fair Chance Ordinance, Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act.

For Los Angeles County (unincorporated) Candidates : xAI reasonably believes that criminal history may have a direct, adverse and negative relationship on the following job duties, potentially resulting in the withdrawal of a conditional offer of employment : Access to information technology systems and confidential information, including proprietary and trade secret information, and / or user data; Interacting with internal and / or external clients and colleagues; and Exercising sound judgment.