About NebiusNebius 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 roleWe’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 opensource community.In This Position, Your Responsibility Will Be ToOptimize I/O for emulated disk and network devicesIntegrate the hypervisor with other platform services and storage facilities for user dataEfficiently distribute resources between virtual machinesImprove guest system supportAdvance the cutting-edge of open source virtualizationProvide low-level security for the hypervisor and emulatorProvide general support, fix bugs, and monitor the upstreamCollaborate with other team members and stakeholdersWe Expect You To Have5+ years of professional software engineering experienceFluent in C programming language3+years of experience with LinuxAt least 3 years of engineering experience with QEMU/KVMGeneral 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 HadAсcepted patches in Linux Kernel or QEMU/KVMExperience working with Linux kernelSome experience with ARMv8, including virtualization extensionsUnderstanding of PCI, SCSI, and ACPIExperience working with the Linux kernelExcellent communication skills for cross-team collaborationStrong work ethicWe conduct coding interviews as part of the process.Benefits & PerksCompetitive compensationCareer growth and learning opportunitiesFlexibility and ownershipCollaborative and innovative cultureOpportunity to work on impactful AI projectsInternational environment and talented teamsWhat's It Like To Work At NebiusFast moving - Bold thinking - Constant growth - Meaningful impact - Trust and real ownership - Opportunity to shape the future of AIEqual Opportunity StatementNebius 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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