Senior Ethernet Performance Engineer

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🏄 California – Remote

🏄 California – Remote

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

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Cornelis Networks

WebsiteLinkedInAll Job Openings

51 - 200 employees

🤖 Artificial Intelligence

🔧 Hardware

🏢 Enterprise

💰 $29M Series B on 2022-11

Artificial Intelligence • Hardware • Enterprise

Cornelis Networks is a leading provider of intelligent, scalable, high-performance interconnects designed for AI applications. The company specializes in delivering end-to-end purpose-built high-performance fabrics to commercial, scientific, academic, and government organizations. Cornelis Networks’ solutions are aimed at enhancing performance, scalability, and efficiency across hyperscale, cloud AI, and on-premises AI/HPC environments. Their offerings are known for scalable architecture, high bandwidth solutions, and universal compatibility with accelerators and GPUs. Originating as an Intel spin-off, the company is positioned to challenge existing technologies like InfiniBand and Ethernet, providing advanced interconnects that power modern AI infrastructure.

📋 Description

• Lead performance validation, debug, and characterization of next-generation Ethernet-based networking silicon products in customer environments • Building, configuring, and benchmarking Ethernet fabrics with RoCEv2 to perform head-to-head performance evaluations • Develop and execute validation and performance test plans targeting internal lab and real-world data center deployment scenarios • Analyze performance metrics such as throughput, latency, congestion, power efficiency, and architectural behavior under networking workloads • Work directly with customers and field teams to reproduce, debug, and optimize performance issues in production environments • Create diagnostic tools and scripts to collect, analyze, and visualize performance data • Collaborate with architecture, firmware, and software teams to root-cause performance anomalies and recommend hardware or system-level improvements

🎯 Requirements

• 7+ years of experience in post-silicon validation, performance engineering, or silicon debug for networking or high-performance compute products • Strong understanding of networking protocols and technologies (e.g., Ethernet, PCIe, switching, congestion control), PFC, ECN, DCQCN • Familiarity with data center performance requirements and benchmarks • Scripting and automation skills (Python, Shell, etc.) • Excellent problem-solving and cross-functional communication skills • Comfort working directly with customers, field engineers, and technical partners

🏖️ Benefits

• competitive compensation package that includes equity, cash, and incentives • health and retirement benefits • access to medical, dental, and vision coverage • disability and life insurance • dependent care flexible spending account • accidental injury insurance • pet insurance • generous paid holidays • 401(k) with company match • Open Time Off (OTO) for regular full-time exempt employees • other paid time off benefits include sick time, bonding leave, and pregnancy disability leave