Critical Infrastructure Engineer

Nebius · New Jersey, United States

  • Junior
  • Full-time
  • $85,000 – $140,000
  • Posted 2025-11-07
  • Confirmed live on 25 September 2026

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Job description

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.

Why work at Nebius

Nebius is leading a new era in cloud computing to serve the global AI economy. We create the tools and resources our customers need to solve real-world challenges and transform industries, without massive infrastructure costs or the need to build large in-house AI/ML teams. Our employees work at the cutting edge of AI cloud infrastructure alongside some of the most experienced and innovative leaders and engineers in the field.

Where we work

Headquartered in Amsterdam and listed on Nasdaq, Nebius has a global footprint with R&D hubs across Europe, North America, and Israel. Our teams bring together deep expertise across hardware, software, networking, data center infrastructure, and AI to build and operate the infrastructure behind large-scale GPU computing.

The team

You will join our Data Center Infrastructure organization, supporting the critical environments that power Nebius GPU clusters and AI cloud infrastructure.

Our team works across the boundary between traditional IT infrastructure and the electrical, mechanical, and cooling systems that keep high-density compute environments online. We partner closely with Data Center IT, Network Engineering, infrastructure providers, colocation partners, and internal leadership to ensure our facilities deliver the capacity, resilience, and operational performance required by our customers.

This is an opportunity to develop broad expertise across both IT and critical infrastructure while helping establish the operational standards that support Nebius as our North American data center footprint continues to scale.

The role

We are seeking a Critical Infrastructure Engineer to help ensure the availability, resilience, and operational readiness of the critical systems supporting Nebius data center IT infrastructure.

The primary objective of this role is uptime.

You will provide technical oversight across the electrical and mechanical infrastructure responsible for delivering reliable power and cooling to our GPU and IT environments. Rather than serving primarily as a maintenance technician, you will verify that critical infrastructure is operated safely, consistently, and in accordance with established SLAs, engineering standards, change-control procedures, and operational best practices.

You will also act as an important bridge between IT infrastructure teams and electrical/mechanical specialists. The ideal candidate understands how servers, networking equipment, racks, and GPU systems operate inside a data center while also having enough exposure to critical facilities systems to understand—and challenge when necessary—the infrastructure supporting them.

The position combines technical analysis, provider governance, change management, incident response, and hands-on familiarity with data center IT environments.

Your responsibilities will include:

Critical Infrastructure & Uptime

• Help ensure the availability and operational readiness of the electrical and mechanical infrastructure supporting production data halls and high-density GPU environments.

• Monitor critical infrastructure performance against contractual SLAs, operational requirements, and established reliability standards.

• Develop a strong understanding of the complete power and cooling path supporting IT equipment and identify conditions that could introduce operational risk.

• Review infrastructure capacity, redundancy, and operating conditions to ensure the environment can reliably support current and planned compute deployments.

• Identify infrastructure risks and work with service providers and internal teams to drive corrective actions before they impact production.

• Support infrastructure planning for data center expansions, capacity increases, and new GPU deployments.

Power & Electrical Infrastructure

• Provide technical oversight of data center electrical infrastructure, including generator plants, automatic transfer switches (ATS), UPS systems, battery banks, switchgear, breakers, busbars, bus plugs, PDUs, and related power distribution equipment.

• Understand electrical distribution from facility-level infrastructure through rack-level delivery and IT equipment.

• Participate in technical reviews involving

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