LinkedIn · 15 hours ago
Sr. Staff Software Engineer - HPC Network Engineering
Mountain View, CA
Full-time
Hybrid
Senior Level, Lead/Staff
$181K/yr - $297K/yr
10+ years expLinkedIn is the world’s largest professional network, built to create economic opportunity for every member of the global workforce. We are seeking an HPC Network Engineer to design, deploy, and operate high-performance, low-latency Ethernet fabrics for large-scale GPU clusters, focusing on RoCE v2-based GPU interconnect networks supporting AI/ML training and inference workloads.
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Responsibilities
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
Qualification
Required
BA/BS Degree in Computer Science or related technical discipline, or equivalent practical experience
10+ years of experience building and operating large-scale distributed systems or data-intensive backend platforms
Experience in one or more programming languages such as Go, Python, C++, or similar
Experience in Linux system engineering and host networking
Demonstrated knowledge of network protocols, fabric design, and performance optimization
Proven ability to lead complex technical initiatives end-to-end in a multi-team environment
Experience with system design skills with focus on scalability, reliability, and performance
Experience with container platforms (Kubernetes) and microservices
Preferred
Experience supporting large-scale AI or HPC workloads
Familiarity with LLM training frameworks and communication libraries (e.g., NCCL, MPI)
Experience with streaming systems (Kafka, Flink, Spark Streaming, or similar) and high-throughput data pipeline architectures
Experience with performance benchmarking and profiling tools
Experience with infrastructure automation or configuration management tools
Demonstrated influence across organizations (tech lead, architect, principal/IC leadership roles)
Benefits
Annual performance bonus
Stock
Benefits and/or other applicable incentive compensation plans
Generous health and wellness programs
Time away for employees of all levels
Company
LinkedIn is a professional networking site that allows users to create business connections, search for jobs, and find potential clients. It is a sub-organization of Microsoft.
10001+ employees
H1B Sponsorship
LinkedIn has a track record of offering H1B sponsorships. Please note that this does not
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2025 (892)
2024 (1108)
2023 (913)
2022 (1580)
2021 (1043)
2020 (1146)
Funding
Current Stage
Public CompanyTotal Funding
$154.8MKey Investors
Bain Capital VenturesGreylockSequoia Capital
2016-06-13Acquired
2016-02-15Private Equity
2014-04-01Series Unknown
Leadership Team
Ryan Roslansky
Chief Executive Officer
Dan Shapero
Chief Operating Officer
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