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Sr. Staff Software Engineer - HPC Network Engineering at LinkedIn3
LinkedIn3Mountain View, CA, us·5h ago
SeniorFull-timeRustKubernetesAIML
Salary Range
$132,600 - $179,400 /year
This salary is estimated based on similar roles. The actual salary may vary.
At LinkedIn, our approach to flexible work is centered on trust and optimized for culture, connection, clarity, and the evolving needs of our business. The work location of this role is hybrid, meaning it will be performed both from home and from a LinkedIn office on select days, as determined by the business needs of the team.
This role will be based in Mountain View, CA.
We are 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. You will work closely with systems, GPU, platform, and software teams to build scalable, lossless Ethernet networks optimized for RDMA traffic.
As a Senior Staff Software Engineer, you will define long-term technical direction, lead cross-org initiatives, mentor senior engineers, and drive solutions for complex distributed systems challenges at massive scale. This role requires deep expertise in backend systems, data processing, and large-scale system design, with strong understanding of networking concepts.
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.
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About LinkedIn3
LinkedIn3 is a forward-thinking company operating at the intersection of professional networking and digital innovation. Specializing in enhancing the capabilities of professional platforms, LinkedIn3 leverages its expertise to provide solutions that bridge the gap between traditional networking and modern technological advancements. While the name suggests a connection to LinkedIn, the company has carved out its own distinct identity, focusing on complementary services that augment professional growth and connectivity. Founded in the digital age, LinkedIn3 is positioned to serve a global audience seeking to optimize their professional presence and networking efforts. The company offers a suite of products and services designed to empower professionals and organizations in their networking endeavors. Key offerings include advanced profile optimization tools, AI-driven connection strategies, and integrated platforms that facilitate seamless communication and collaboration. LinkedIn3 targets career-driven individuals, HR professionals, and businesses looking to enhance their online presence and networking efficiency. Its solutions are characterized by user-friendly interfaces, data-driven insights, and a commitment to privacy and security, ensuring that clients can navigate the digital professional landscape with confidence. LinkedIn3 has distinguished itself through its innovative approach and client-centric philosophy, earning a reputation as a trusted partner in professional development. The company’s market position is bolstered by its ability to adapt to evolving digital trends and deliver measurable results. By combining cutting-edge technology with a deep understanding of professional networking dynamics, LinkedIn3 provides a unique value proposition that sets it apart from competitors. Its focus on continuous improvement and client success underscores its mission to redefine the future of professional connectivity.
