Critical Environments Operator (Level 1-4)

About the Role

As a Critical Environments Operator (Night Shift) 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 through overnight hours. You will operate, monitor, and maintain electrical, mechanical, and HVAC/R systems while upholding the highest standards of safety, workmanship, and customer service. This position supports night shift coverage, with shift schedules (8- or 10-hour shifts) varying by site on a rotating basis.

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 for you 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.
• 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.

Requirements & Tech Stack

• Ability to work overnight shifts on a rotating schedule, with shift lengths varying by site (8 or 10 hours)
• Willingness to work a flexible schedule, including on-call rotation and extended hours during emergencies
• Ability to lift up to 50 pounds, perform considerable walking, bending, and standing
• Proficiency with personal computers, including Microsoft Word and Excel
• Electrical systems
• Mechanical systems
• HVAC/R systems
• Computerized Maintenance Management System (CMMS)
• Lockout/Tagout procedures
• SOPs, MOPs, EOPs, MMRs

Qualifications

• Strong commitment to safety — always
• Clear verbal and written communication skills
• Solid problem-solving and decision-making ability
• Ability to manage multiple priorities in a fast-paced, high-stakes environment
• Team-first mindset — promotes collaboration and shared success
• Desire to provide the highest levels of service to internal and external customers
• At senior levels: Proven ability to lead operational activities, manage vendor relationships, and support team development.

Why CyrusOne?

• Shift differential pay — night shift compensation includes a differential
• Career growth — a defined progression path with ongoing investment in development
• Cutting-edge work — support AI, hyperscale, and cloud infrastructure
• Global scale — operate across North America, EMEA, and APAC
• Award-winning culture — recognized for our people-first environment
• Values-driven — grounded in CARE: Commitment, Accountability, Respect, and Excellence