Sr. Staff Software Engineer - HPC Network Engineering
LinkedInMountain View, California, United States
Posted March 18, 2026
181000 - 297000 USD
Full Time
About the Company
LinkedIn is the world’s largest professional network, built to create economic opportunity for every member of the global workforce.
Job Description
LinkedIn is seeking an HPC Network Engineer to design, deploy, and operate high-performance, low-latency Ethernet fabrics for large-scale GPU clusters. The role focuses on RoCE v2–based GPU interconnect networks supporting AI/ML training, inference, and HPC workloads.
Requirements
- Network architecture and design for large-scale LLM training and inference workloads.
- Design RoCE v2–based GPU interconnection fabrics for multi-rack and multi-pod GPU clusters
- Define lossless Ethernet architectures (Clos / fat-tree / leaf-spine) optimized for RDMA
- Select and validate 400G / 800G Ethernet switching platforms and NICs (ConnectX, BlueField, etc.)
- Deep expertise in host-level and Kubernetes pod networking architectures, including enablement of high-performance features such as RDMA and GPU Direct.
- Experience in host network performance tuning for large-scale collective communications, balancing latency, throughput, and congestion control.
- Analyze system performance and diagnose complex cross-layer issues.
Benefits
- Generous health and wellness programs
- Time away for employees of all levels
- Annual performance bonus
- Stock
- Benefits and/or other applicable incentive compensation plans
