RDMA Performance Engineer

This is a fully remote position, open to applicants in Poland.

📋 Description

• Configure, troubleshoot, and maintain NVIDIA/Mellanox Spectrum switches and ConnectX Network Interface Cards (NICs).

• Implement and optimize congestion control mechanisms for AI workloads, including RoCEv2, Priority-based Flow Control (PFC), and Explicit Congestion Notification (ECN).

• Enhance network environments to achieve maximum throughput, minimal latency, and reduced Job Completion Time (JCT).

• Perform performance benchmarking and validation testing on AI-ready data center fabrics utilizing RDMA and the NVIDIA Collective Communication Library (NCCL).

• Utilize AI agents and specialized tools to automate network tasks, conduct testing, and analyze network telemetry.

• Create and maintain technical documentation that details network designs, configurations, and benchmarking outcomes.

• Collaborate within an Agile project team in a startup setting, catering to a US-based client.

⛳️ Requirements

• Over 7 years of professional experience in network engineering.

• Ideally, 3+ years dedicated to data center network design and architecture.

• Practical experience in configuring and troubleshooting BGP, EVPN/VXLAN, LACP, and ECMP.

• Comprehensive knowledge of AI-oriented data center designs, including Rail-Optimized Design (ROD) and Rail-Unified Design (RUD) topologies, with hands-on configuration and deployment experience.

• Experience in configuring, managing, and troubleshooting NVIDIA/Mellanox Spectrum switches and ConnectX Network Interface Cards (NICs).

• In-depth understanding of RoCEv2, Priority-based Flow Control (PFC), and Explicit Congestion Notification (ECN).

• Capability to tune and optimize network environments, including switch buffer tuning and Quality of Service (QoS) policies.

• Proven experience in conducting performance benchmarking and validation for AI-ready data center fabrics using RDMA and NVIDIA Collective Communication Library (NCCL).

• Proficiency in leveraging AI agents/tools to automate tasks, testing, and analysis.

• Strong aptitude for technical documentation and professional English communication.

• Professional-level certifications (CCNP/CCIE Enterprise/DC, JNCIP or equivalent) are preferred.

• Hands-on experience with network automation and validation frameworks (pyATS, NAPALM, Batfish, Nornir, NetBox) is preferred.

• Familiarity with CI/CD pipelines (GitLab CI, GitHub Actions, Jenkins) and Infrastructure as Code (IaC) concepts is preferred.

🏝️ Benefits

• Flexible working hours and a variety of work approaches: fully remote, in-office, or hybrid.

• Professional development facilitated by internal training sessions and a dedicated training budget.

• Comprehensive onboarding with a hands-on approach to ensure a smooth start.

• A supportive atmosphere among professionals who are passionate about their work.

• The opportunity to change the project you are involved in.