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 RoleNebius is building next-generation data center infrastructure across the United States to support high-density, GPU-driven workloads. As a Mechanical Design Engineer, you will support the design, review, and technical development of mechanical systems for data centers across the US portfolio. This role is ideal for a mechanical engineer who can take broad ownership across data center mechanical design, evaluate technical options, and work closely with electrical, construction, commissioning, and operations teams. The right candidate can operate independently, review third-party designs, and help Nebius build scalable, maintainable, high-density data center environments. Location: Remote, US Responsibilities • Review mechanical design packages for data center projects, including internal concepts and third-party partner designs. • Support mechanical design development for high-density data center environments. • Evaluate mechanical design options for air-cooled and liquid-cooled data center architectures. • Coordinate closely with electrical design, construction, commissioning, and operations stakeholders. • Review designs for maintainability, operational resilience, capacity, and alignment with Nebius standards. • Help assess technical tradeoffs, alternative solutions, product options, and design risks. • Support design reviews tied to power density, airflow, cooling capacity, and operational readiness. Requirements • Data center mechanical design experience. • Strong understanding of mechanical systems in mission-critical or data center environments. • Experience with air-cooled data center design. • Ability to evaluate mechanical capacity, flows, and design assumptions. • Ability to review design documents, technical proposals, and partner deliverables. • Ability to read and interpret contracts, design requirements, and technical standards. • Strong communication skills with internal stakeholders, external design partners, and construction teams. • Broad engineering ownership mindset; able to manage the full mechanical design scope rather than only a narrow specialty. Nice to Have • Experience with liquid-cooled data center technologies. • Experience with hyperscale, neocloud, GPU, or AI infrastructure data centers. • Experience at companies such as Lambda, CoreWeave, hyperscalers, colocation providers, or mission-critical engineering firms. • Familiarity with high-density rack environments, including 50kW to 200kW per rack. • Experience supporting design reviews through commissioning or operational turnover.   Pay Transparency We offer competitive compensation and benefits packages. Actual compensation will be determined based on job-related factors, including experience, skills, qualifications, the level at which the candidate is hired, and geographic location, consistent with applicable law. Base Compensation Range $185,000—$225,000 USD 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.