Nebius
Lead Software Systems Engineer - GPU Performance
$170K–$300K
Remote - United States +1 · Remote · Full-time · Posted Apr 21, 2026
- Location
- Remote - United States
United States - Experience
- 5+ years in system-level software development; 3+ years of hands-on Linux systems experience.
- Visa sponsorship
- Applicants must be authorized to work in the country in which they apply and provide proof of employment eligibility as a condition of hire.
About the job
Optimizes and validates GPU cluster performance across hardware, system software, networking, virtualization, and distributed communication layers.
What you'll do
- Investigate and troubleshoot GPU-cluster performance under training and inference workloads; identify bottlenecks and drive improvements.
- Evaluate and integrate hardware, system configurations, and tuning approaches; contribute to hardware and cluster qualification.
- Support performance escalations and collaborate with infrastructure, software, and hardware vendor teams.
What they ask for
- 5+ years of professional experience in system-level software development focused on performance optimization and low-level programming.
- 3+ years of hands-on experience with Linux systems administration, troubleshooting, and performance tuning.
- In-depth understanding of server architecture, including PCIe devices, NICs, Linux OS/Kernel, and HPC systems.
- Strong proficiency in one or more of C/C++, Go, or Python.
Pay
$170,000 — $300,000 USD (base salary)
Tools
InfiniBand, RoCE, KVM/QEMU, MPI, NCCL, Linux, C/C++, Go
AI focus
Optimizes GPU clusters used for AI training and inference workloads.
Model-written summary · the original posting is authoritative