Critical Operations Engineer Night; CH

About Coresite

At Core Site, we empower a more connected future through high-performance data centers and interconnection solutions. Recognized as a trusted partner in digital transformation, our strategically located facilities and innovative services enable businesses to connect, collaborate, and grow in an ever‑evolving technological landscape.

Our culture is defined by operational excellence and a relentless drive for innovation. We foster a collaborative environment where every team member is valued, wins are celebrated as a team, and ownership is part of our DNA. At Core Site, we’re not just building state‑of‑the‑art infrastructure—we’re creating a community of forward‑thinkers committed to solving complex challenges and delivering exceptional customer experiences.

At Core Site we are committed to excellence, building connections, owning it, doing the right thing, having fun, and winning as a team. Join us and be part of a team that is shaping the future of digital infrastructure while nurturing your professional growth and success.

As a member of the Data Center Operations team, the Critical Operations Engineer I (COE I) is responsible for operating, monitoring, and maintaining critical data center electrical, mechanical, cooling, and fire/life safety systems to support reliable facility operations. COE I performs routine operational tasks, responds to alarms and abnormal conditions, supports customer infrastructure projects, and works closely with team members, vendors, and customers while developing technical knowledge and experience within a mission‑critical environment.

The COE I follows established operational procedures, safety standards, and best practices while supporting day‑to‑day facility operations and continuous improvement efforts. The position also performs other duties and responsibilities as assigned.

• Operate, monitor, maintain, and troubleshoot mission‑critical electrical, mechanical, and life safety systems to ensure uptime and reliability
• Perform facility inspections, respond to abnormal conditions, and document findings
• Track, trend, and analyze system performance; utilize CMMS to manage work orders and maintenance

• Support electrical distribution from utility and generator switch gear through UPS and customer load
• Assist with maintenance activities involving generators, switch gear, UPS, STS, ATS, PDUs, transformers, and power circuits
• Perform customer power adds, disconnects, and related infrastructure support activities

• Operate and maintain chilled water, HVAC, CRAC/CRAH, humidification, and central plant systems
• Support cooling optimization, pumps, VFDs, cooling towers, heat exchangers, and water treatment.

• Monitor wet sprinkler and double‑interlock pre‑action systems and associated detection devices
• Support customer infrastructure projects including cage builds, rack and stack, overhead installs, power, and cabling

• Partner with senior technicians, contractors, and vendors on maintenance, upgrades, and expansions.
• Provide advanced remote hands, manage trouble tickets, incidents, and customer requests
• Support administrative and communication activities across CMMS, ticketing, monitoring, and other operational platforms; maintain accurate documentation and provide timely updates to stakeholders
• Contribute to procedures, documentation, and continuous improvement while promoting Operational Excellence

• Strong troubleshooting and problem‑solving skills with the ability to apply technical knowledge effectively
• Self‑motivated, dependable, and accountable with a strong work ethic
• Team‑oriented mindset with the ability to collaborate across operations, engineering, and customer teams
• Commitment to safety, quality, and operational excellence
• Ability to work in a fast‑paced, high‑availability environment
• Clear written and verbal communication skills
• Working knowledge of data center electrical, mechanical, and BAS/BMS infrastructure and…