Critical Environments Operator (Level 1-4)

About the Role

This role builds a pipeline of talented Critical Environments Operators across all experience levels, from associates starting their careers to seasoned lead technicians. As a Critical Environments Operator at CyrusOne, you will be part of a 24/7/365 Operations & Maintenance team responsible for keeping mission-critical data center infrastructure running at peak reliability. You will operate, monitor, and maintain electrical, mechanical, and HVAC/R systems while upholding the highest standards of safety, workmanship, and customer service.

Key Responsibilities

• Monitor and operate data center mechanical, electrical, and HVAC/R systems to ensure continuous uptime and reliability.
• Respond to building system alarms, prioritizing critical load protection, equipment preservation, and root cause analysis.
• Execute Preventive Maintenance work orders and follow SOPs, MOPs, EOPs, and MMRs as appropriate.
• Use a Computerized Maintenance Management System (CMMS) to track work orders, labor hours, and PMs.
• Coordinate with contractors and vendors; enforce Lockout/Tagout and other safety protocols.
• Perform equipment and system operational modifications, including critical switching and safe working area setup.
• Maintain awareness of and compliance with all company, government, and client policies, procedures, and EHS requirements.
• At senior levels: provide mentorship to junior operators, lead critical switching events, and participate in capacity planning and reporting.

Levels & Experience

This is an evergreen posting that supports hiring across four levels. The right level will be determined based on your experience and qualifications.

• Level I: No prior data center experience required. Ideal for candidates eager to learn data center O&M, with 0–2 years in operations, maintenance, or customer service roles. Strong safety mindset and willingness to learn are the most important qualities.
• Level II: 3–5 years of experience in Tier 2, 3, or 4 data centers or a technical facility maintenance role. Entry-level skills in electrical, mechanical, or HVAC/R disciplines. Familiarity with CMMS and work order processes a plus.
• Level III: 5–7 years of data center or building engineering experience. Journeyman-level skills in electrical, mechanical, or HVAC/R. Ability to operate independently, troubleshoot systems, stabilize operations during incidents, and guide less experienced team members.
• Level IV: 7+ years of relevant experience with demonstrated expertise at the journeyman or master level. Active HVAC certification or Journeyman/Master Electrician license preferred. Proven ability to lead operational activities, manage vendor relationships, and support team development.

What We Are Looking For

• Strong commitment to safety — always.
• Clear verbal and written communication skills.
• Solid problem-solving and decision-making ability.
• Proficiency with personal computers, including Microsoft Word and Excel.
• Ability to manage multiple priorities in a fast-paced, high-stakes environment.
• Willingness to work a flexible schedule, including on-call rotation and extended hours during emergencies.
• Team-first mindset — promotes collaboration and shared success.
• Desire to provide the highest levels of service to internal and external customers.

Work Environment

This role operates in a fast-paced, physically active data center environment. Candidates must be able to lift up to 50 pounds, perform considerable walking, bending, and standing, and be available for 24/7/365 shift work including after-hours emergency response.