Nebius
Senior Hypervisor Engineer
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About Nebius
Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure.
Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking, and applied AI.
Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America, and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software, and AI R&D.
The Role
We’re looking for a Senior Hypervisor Engineer to contribute to the development of our hyperscaler platform.
The Hypervisor team supports and develops the parts of the Cloud platform that directly affect the KVM hypervisor and QEMU device emulator. We understand the granular details of hardware virtualization and device emulation, paying close attention to performance and protection against untrusted code.
You will work on substantial extensions for the QEMU/KVM virtualization stack in close cooperation with the open-source community.
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In this position, your responsibility will be to:
- Optimize I/O for emulated disk and network devices
- Integrate the hypervisor with other platform services and storage facilities for user data
- Efficiently distribute resources between virtual machines
- Improve guest system support
- Advance the cutting-edge of open-source virtualization
- Provide low-level security for the hypervisor and emulator
- Provide general support, fix bugs, and monitor the upstream
- Collaborate with other team members and stakeholders
Requirements
We expect you to have:
- 5+ years of professional software engineering experience
- Fluent in C programming language
- 3+ years of experience with Linux
- At least 3 years of engineering experience with QEMU/KVM
- General understanding of x86-compatible systems (virtual memory, interrupts, privilege rings)
- Experience writing general system code in user mode for Linux, including debugging, analysis, and optimization tools (the emulator is built on the user mode system process for Linux)
It would be an added bonus if you had:
- Accepted patches in Linux Kernel or QEMU/KVM
- Experience working with Linux kernel
- Some experience with ARMv8, including virtualization extensions
- Understanding of PCI, SCSI, and ACPI
- Experience working with the Linux kernel
- Excellent communication skills for cross-team collaboration
- Strong work ethic
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Process
We conduct coding interviews as part of the process.
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
What's it like to work at Nebius
- Fast moving
- Bold thinking
- Constant growth
- Meaningful impact
- Trust and real ownership
- Opportunity to shape the future of AI
Equal Opportunity Statement
Nebius is an equal opportunity employer. We are committed to fostering an inclusive and diverse workplace and to providing equal employment opportunities in all aspects of employment. We do not discriminate on the basis of race, color, religion, sex (including pregnancy), national origin, ancestry, age, disability, genetic information, marital status, veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable law.
Applicants must be authorized to work in the country in which they apply and will be required to provide proof of employment eligibility as a condition of hire.
If you need accommodations during the application process, please let us know.
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