Senior System Software Engineer - GPU Performance

NVIDIA Corporation; Santa Clara (CA); On-site; USD 152,000 - 287,500; Full time

Benefits offered by this job

Equity

Benefits

Job summary

NVIDIA invites a Senior System Software Engineer to advance performance characterization for multi-GPU, multi-node workloads and optimize GPU communications libraries.

The role requires strong HPC background and 3+ years in parallel programming with MPI/NCCL/UCX, plus C/C++ and Python skills. Equity and benefits accompany a competitive base salary and opportunities across time zones.

Qualifications

• MS or PhD in Computer Science or related field with performance engineering & HPC experience
• 3+ years of parallel programming experience
• Experience with MPI, NCCL, UCX, or NVSHMEM
• Strong understanding of computer architecture and OS principles
• Proficient in C/C++ and Python
• Experience with containers and orchestration (Kubernetes, SLURM, Docker)
• Ability to debug performance issues across HW/SW stack

Responsibilities

• Conduct in-depth performance characterization on large multi-GPU and multi-node clusters
• Study interactions of libraries with HW/SW components in the stack
• Evaluate concepts and perform trade-offs between solutions
• Triage and root-cause performance issues reported by customers
• Collect performance data and build visualization/analysis tools
• Collaborate with a global team across time zones

Job description

## Senior System Software Engineer - GPU PerformanceApplylocations: US, CA, Santa Clara: US, Remotetime type: Full timeposted on: Posted Todayjob requisition id: JR1997214NVIDIA is leading the way in groundbreaking developments in Artificial Intelligence, High Performance Computing and Visualization. The GPU, our invention, serves as the visual cortex of modern computers and is at the heart of our products and services. Our work opens up new universes to explore, enables amazing creativity and discovery, and powers what were once science fiction inventions from artificial intelligence to autonomous cars.We are the GPU Communications Libraries and Networking team at NVIDIA. We deliver libraries like NCCL, NVSHMEM, UCX for Deep Learning and HPC. We are looking for a motivated Performance engineer to influence the roadmap of our communication libraries. The DL and HPC applications of today have a huge compute demand and run on scales which go up to tens of thousands of GPUs. The GPUs are connected with high-speed interconnects (eg. NVLink, PCIe) within a node and with high-speed networking (eg. Infiniband, Ethernet) across the nodes. Communication performance between the GPUs has a direct impact on the end-to-end application performance; and the stakes are even higher at huge scales! This is an outstanding opportunity for someone with HPC and performance background to advance the state of the art in this space. Are you ready for to contribute to the development of innovative technologies and help realize NVIDIA's vision?## **What you will be doing:*** Conduct in-depth performance characterization and analysis on large multi-GPU and multi-node clusters.* Study the interaction of our libraries with all HW (GPU, CPU, Networking) and SW components in the stack* Evaluate proof-of-concepts, conduct trade-off analysis when multiple solutions are available* Triage and root-cause performance issues reported by our customers* Collect a lot of performance data; build tools and infrastructure to visualize and analyze the information* Collaborate with a very dynamic team across multiple time zones## **What we need to see:*** M.S. (or equivalent experience) or PhD in Computer Science, or related field with relevant performance engineering and HPC experience* 3+ yrs of experience with parallel programming and at least one communication runtime (MPI, NCCL, UCX, NVSHMEM)* Experience conducting performance benchmarking and triage on large scale HPC clusters* Good understanding of computer system architecture, HW-SW interactions and operating systems principles (aka systems software fundamentals)* Implement micro-benchmarks in C/C++, read and modify the code base when required* Ability to debug performance issues across the entire HW/SW stack. Proficient in a scripting language, preferably Python* Familiar with containers, cloud provisioning and scheduling tools (Kubernetes, SLURM, Ansible, Docker)* Adaptability and passion to learn new areas and tools. Flexibility to work and communicate effectively across different teams and timezones## **Ways to stand out from the crowd:*** Practical experience with Infiniband/Ethernet networks in areas like RDMA, topologies, congestion control* Experience debugging network issues in large scale deployments* Familiarity with CUDA programming and/or GPUs* Experience with Deep Learning Frameworks such PyTorch, TensorFlowYour base salary will be determined based on your location, experience, and the pay of employees in similar positions. The base salary range is 152,000 USD - 241,500 USD for Level 3, and 184,000 USD - 287,500 USD for Level 4.You will also be eligible for equity and benefits.Applications for this job will be accepted at least until August 4, 2026.This posting is for an existing vacancy.NVIDIA uses AI tools in its recruiting processes.NVIDIA is committed to fostering an inclusive 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.