Senior RDMA Performance Engineer

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

📋 Description

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

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

• 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).

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

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

• Collaborate as part of an Agile project team in a startup atmosphere, contributing to a project for a US client.

⛳️ Requirements

• Over 7 years of professional experience in network engineering.

• Ideally, 3 or more years specifically focused on data center network design and architecture.

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

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

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

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

• Experience in tuning switch buffers and implementing Quality of Service (QoS) policies.

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

• Ability to utilize AI agents/tools for task automation, testing, and analysis.

• Strong skills in technical documentation and professional communication in English.

• Professional-level certifications such as CCNP/CCIE Enterprise/DC, JNCIP, or equivalent are advantageous.

• Hands-on experience with tools like pyATS, NAPALM, Batfish, Nornir, or NetBox is a plus.

• Familiarity with GitLab CI, GitHub Actions, Jenkins, and infrastructure-as-code concepts is a bonus.

🏝️ Benefits

• Flexible working hours and options for remote, in-office, or hybrid work arrangements.

• Opportunities for professional growth supported by internal training sessions and a dedicated training budget.

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

• A positive work environment among professionals who are passionate about their careers.

• The chance to switch projects as desired.