Referso Jobs

Senior Systems HPC Engineer

Nebius · Posted Apr 24, 2026

Remote, Netherlands
Remote
Full-time · Senior
Competitive compensation
5+ years

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Senior Systems HPC Engineer to play a key role in building the 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.

Responsibilities

Focus on understanding system behavior across multiple layers, identifying performance bottlenecks, and driving improvements that shape how 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)

Skills

System-level software development Performance optimization Low-level programming Linux systems administration Linux systems troubleshooting Linux systems performance tuning

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