# Senior Systems HPC Engineer

**Company**: Nebius
**Location**: Amsterdam
**Work arrangement**: remote
**Experience**: senior
**Job type**: full-time
**Category**: Engineering
**Industry**: Technology

**Apply**: https://job-boards.greenhouse.io/nebius/jobs/4849792101?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_d3f9ff9d-4a6

## Description

We are looking for a Senior Systems HPC Engineer to play a key role in building our hyperscaler platform, working across its core components while analyzing and optimizing the performance of large-scale GPU clusters at the intersection of hardware and software.

You will operate across the full stack,from hardware and system software to networking (InfiniBand/RoCE), virtualization (KVM/QEMU), and distributed communication layers (e.g., MPI, NCCL).

In this role you will:

- Focus on understanding system behavior across multiple layers, identifying performance bottlenecks, and driving improvements that shape how our clusters are built, operated, tuned, and validated.

- Investigate and troubleshoot performance issues of GPU cluster under real workloads (training and inference)

- Evaluate and integrate new hardware, system configurations and tuning approaches through software stack

- Support complex performance-related escalations from internal teams and customers

- Work closely with infrastructure, software engineering and hardware vendor teams (e.g. NVIDIA, Mellanox, Intel)

- Contribute to hardware and cluster qualification (acceptance), ensuring systems meet performance expectations

We expect you to have:

- 5+ years of professional experience in system-level software development (focused on performance optimization, 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 high-performance computing (HPC) systems.

- Strong proficiency in one or more performance-oriented programming languages (C/C++, Go, Python).

Benefits & Perks:

- Competitive compensation

- Career growth and learning opportunities

- Flexibility and ownership

- Collaborative and innovative culture

- Opportunity to work on impactful AI projects

- International environment and talented teams

## Skills

### Required
- Linux
- HPC
- performance optimization
- low-level programming
- C/C++
- Go
- Python
- InfiniBand
- RoCE
- KVM
- QEMU
- MPI
- NCCL

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Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/nebius/jobs/4849792101?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)