Critical Infrastructure Engineer (AI Data Center)

Location: Oklahoma, United States; onsite data center operations

Salary: $49–$54 USD per hour

Company

Nebius builds a full-stack AI cloud platform for data preparation, model training, and production deployment, with infrastructure spanning compute, storage, networking, and applied AI.

What you will do

• Operate, monitor, troubleshoot, and maintain critical power systems including UPS, PDUs, RPPs, in-rack busbars, and generator interfaces.
• Manage critical cooling infrastructure including CRAHs, CRACs, CDUs, RDHx systems, water-side infrastructure, capacity checks, and leak inspections.
• Administer DCIM and BMS platforms, maintaining dashboards, alerts, capacity reports, and infrastructure records.
• Participate in incident management, root-cause analysis, CAPA execution, commissioning, design reviews, and technical reporting.
• Support deployment and commissioning of GB-scale liquid-cooled racks, DLC manifolds, and CDU connections.
• Coordinate with facilities, network, technician, vendor, and contractor teams while mentoring Associate Infrastructure Engineers.

Requirements

• Working proficiency with UPS, PDU, RPP, in-rack busbar, and generator-interfacing systems.
• Hands-on experience with CRAH/CRAC, CDU, RDHx, water-side cooling infrastructure, and leak detection.
• Competence in DCIM/BMS administration, alert management, capacity modeling, and dashboard reporting.
• Ability to document maintenance, capacity, change, incident, RCA, and CAPA records clearly.
• Ability to work on your feet for extended periods, lift up to 50 pounds unassisted, work at heights and in confined spaces, and operate in variable-temperature environments.
• Applicants must be authorized to work in the United States and provide proof of employment eligibility.

Nice to have

• Developing knowledge of GB rack liquid cooling, DLC manifolds, and heat-rejection infrastructure.
• Experience mentoring or training infrastructure engineering personnel.

Culture & Benefits

• Competitive compensation and benefits.
• Career growth and learning opportunities.
• Flexibility, ownership, and a collaborative working environment.
• Opportunity to work on impactful AI infrastructure projects in an international environment.
• On-call participation for after-hours critical power, cooling, alarm, and urgent maintenance events.