Senior Networking Solution Test Engineer
NVIDIAWe are looking for a Senior networking test engineer with strong system‑level debugging skills to join our End‑to‑End Verification team. You will work on cutting‑edge Ethernet‑based AI clusters, owning complex issues across hardware, system software and AI workloads. NVIDIA is widely considered to be one of the technology world’s most desirable employers. We have some of the most forward-thinking and hardworking people in the world working for us. If you're creative and autonomous, we want to hear from you!
What you’ll be doing:
Design and review test and product requirements across the Ethernet / NIC / DPU / Switch portfolio, focusing on large‑scale AI cluster behavior
Build and maintain realistic customer‑like testbeds, including heterogeneous hardware, OS / driver combinations and complex network fabrics
Own end‑to‑end cluster troubleshooting: reproduce customer scenarios, triage across the stack and drive issues to root cause and fix
Read and understand relevant source code to identify defects, validate fixes and improve logging and instrumentation
Collaborate closely with development teams to debug NCCL, RoCE/RDMA and related networking components using logs, code inspection and targeted experiments
Define tests and guide the automation team to implement robust suites that produce actionable logs, metrics and traces
Run Regression, Performance, Functional and Scale testing, analyze results and provide clear, data‑driven reports to stakeholders
Profile and benchmark deep learning training and inference workloads, correlating model‑level metrics with system and network telemetry to uncover bottlenecks
What we need to see:
B.A./B.Sc. in Computer Science, Electrical Engineering, or equivalent IT/Network/Systems experience
5+ years of hands‑on networking or system‑level testing and debugging on Linux
Strong Linux networking and debugging skills (for example perf, tcpdump, ethtool, iproute2)
Proven production‑grade debugging experience: forming hypotheses, running experiments, and driving issues to root cause under pressure
Expertise in host‑side NIC validation and tuning (offloads, queues, interrupts, firmware/driver interactions)
Strong knowledge of AI networking libraries (such as NCCL) and protocols (such as RoCE and RDMA), including performance and correctness debugging
Ability to read and reason about source code (C/C++/Python or similar) and collaborate closely with developers on fixes
Solid scripting and automation skills with Bash / Python / Ansible for setup, log collection, and experiment orchestration
Fast learner, familiar with modern AI tools and workflows, able to adapt quickly
Excellent analytical, problem‑solving and communication skills, with strong ownership and a collaborative mindset
Ways to stand out from the crowd:
Hands‑on debugging of collective communication libraries (for example NCCL) or large‑scale LLM training / inference clusters
Experience with large cluster environments (tens to thousands of GPUs or nodes), including incident response and post‑mortem analysis
Deep expertise in tuning and debugging congestion control and lossless Ethernet for AI workloads (for example DCQCN, ECN, PFC)
Familiarity with NVIDIA networking technologies (for example BlueField / BF3, ConnectX NICs) and their software stack and diagnostics
Experience debugging issues that span multiple layers (L2/L3, transport, AI frameworks) or contributing to open‑source networking / AI systems
NVIDIA is committed to fostering a diverse work environment and proud to be an equal opportunity employer. As we highly value diversity in our current and future employees, we do not discriminate (including in our hiring and promotion practices) on the basis of race, religion, color, national origin, gender, gender expression, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law.
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