Critical Operations Engineer II (Second) (DE3)

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Critical Operations Engineer II (Second) (DE3)

Location: Denver, CO, United States

Salary Range: $38.00 - $43.00

Anticipated Close Date: 30 days

Work Schedule: 5x8

Shift: 2

Shift Start Day: Tuesday

Shift End Day: Saturday

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Description

About Coresite

At CoreSite, 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, inclusive environment where every team member is valued, wins are celebrated as a team, and ownership is part of our DNA. At CoreSite, 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 CoreSite not only are we Committed to Excellence, but we also Build Connections, Own It, Do the Right Thing, Have Fun, and Win 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.

Critical Operations Engineer II Role:

As a member of the Data Center Operations team, the Critical Operations Engineer II (COE II) is responsible for operating, maintaining, and troubleshooting critical data center electrical, mechanical, cooling, and fire/life safety systems to ensure the highest levels of reliability and uptime. The COE II applies advanced knowledge of critical facility systems, including understanding system interdependencies and the operational impact changes to one system may have on others. COE II supports customer infrastructure projects and collaborates with technicians, vendors, and customers to drive operational excellence, resolve issues efficiently, and continuously improve processes and performance.

In addition, the COE II provides technical guidance, mentorship, and on-the-job training to team members while promoting adherence to established operational procedures, safety standards, and best practices. The position also performs other duties and responsibilities as assigned.

We are currently hiring for the Second Shift Tuesday - Saturday 2:00pm-10:30pm

Relocation assistance and sign-on bonuses available for qualifying candidates.

What You'll Do:

Critical Facilities Operations

• 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

Electrical Systems

• Support electrical distribution from utility and generator switchgear through UPS and customer load
• Maintain and coordinate work on generators, switchgear, UPS, STS, ATS, PDUs, transformers, and power circuits

Mechanical Systems

• 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

Fire Life Safety & Infrastructure

• 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

Collaboration & Customer Support

• Partner with senior technicians, contractors, and vendors on maintenance, upgrades, and expansions
• Provide advanced remote hands, manage trouble tickets, incidents, and customer requests
• Lead administrative activities across CMMS, ticketing, monitoring, and other operational platforms; maintain accurate documentation, provide timely updates, and coordinate with internal teams, vendors, and customers
• Provide technical guidance and operational leadership to less experienced team members during routine operations, maintenance activities, and incident response
• Contribute to procedures, documentation, and continuous improvement while promoting Operational Excellence

Knowledge, Skills and Abilities:

Required:

• 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
• Strong understanding of data center electrical and mechanical infrastructure
• Advanced understanding of the interaction between electrical, mechanical, UPS, generator, and BAS/BMS systems and the ability to assess operational impacts across interconnected systems
• Working knowledge of NEC, NFPA 70E, NFPA 72, NFPA 25, OSHA, and fire life safety requirements
• Comfortable using hand tools, electrical test equipment, and standard computer applications

Preferred Experience:

• Electrical distribution systems including generators, switchgear, UPS, STS, ATS, PDUs, and transformers
• Mechanical systems including chilled water, HVAC, CRAC/CRAH, humidification, pumps, VFDs, cooling towers, and heat exchangers
• Fire protection systems including wet sprinkler and double-interlock pre-action systems
• BMS, PLC controls, and integrated monitoring systems
• Fiber and copper cabling installation, termination, and testing
• Proficiency with fiber optics, structured cabling, and telecommunications infrastructure.
• Working knowledge of basic security systems, including access control, CCTV, and facility monitoring systems

Education/Experience:

• High School Diploma or greater
• 2-5 years of experience in the data center industry
• Proven hands-on experience with large commercial or industrial electrical and mechanical systems
• Strong fit for candidates with experience in the military with HVAC or Electrical training

Physical Demands:

The physical demands described here are representative of those that must be met by an employee to successfully perform the job's essential functions. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

While performing the job's duties, the employee is required to stand; walk, sit, use hands to handle or feel objects, reach with hands and arms, climb stairs, balance, stoop or kneel, talk, and hear. The employee must occasionally lift and/or move up to 50 pounds. The position also demands flexibility to work in a fast-paced, high-stress environment with changing priorities, including evenings, weekends, holidays, and on-call hours as needed.

Must pass background check, employment verification, and other pre-employment requirements.

Compensation:

Compensation for this role includes a base salary between $38.00/hr and $43.00/hr. This role is also eligible for an annual bonus and equity, based upon individual and company performance.

Posting Timeline:

This position is expected to be posted through September 4, 2026.

Benefits

Not only does CoreSite have a fun, team-focused work environment, but we also offer great benefits to all employees regularly scheduled to work more than 20 hours a week!

• First-day medical insurance through Cigna with generous premium cost coverage
• Dental insurance through Delta Dental
• Vision insurance through VSP
• Telemedicine through MDLive for Cigna
• Healthcare and dependent care flexible spending account (FSA) plans
• Health saving account (HSA) plans for employees participating in the High Deductible Health Plan
• Life, AD&D, short-term disability, and long-term disability insurance fully paid by the company
• Voluntary coverage benefits for supplemental life, critical illness, accident, and hospital insurance
• First-day eligibility for 401(k) savings plan through Fidelity, which includes an attractive matching company contribution with a 5% company match
• Discretionary annual bonus and equity incentive plan
• Employee stock purchase plan (ESPP) with a 15% discount
• 16 days of paid time off (PTO), 11 paid company holidays, and additional floating holidays
• Additional paid time off for school events, elder care, volunteering, bereavement, jury duty, voting, parental leave, and disability leave
• Free parking or a company contribution toward a public transit pass

Additional Perks

• Wellness Reimbursement Program: Yearly stipend of $500 for employees and $300 for dependents, up to $800 total for the family
• Wellness Incentive Program: Participate in various wellbeing activities to earn up to $450 per year in cash incentives
• Technology Stipend: $100 monthly stipend
• Educational Reimbursement Program: Work-related learning and development with reimbursement on qualifying degree programs, up to $5,250 per year
• Giving Back: Charitable donation matches up to $5,000 per year and nominate organizations for Company Foundation grants
• Financial Management: Access to financial coaching, digital tools, and services to manage and pay student loan debt quicker
• Pet Insurance: Keep your furry friends healthy and happy
• Family Planning: Benefits and services related to fertility, pregnancy, menopause, adoption and surrogacy
• Employee Assistance Program: 24x7 service to support family, work, money, health, legal and life challenges
• Counseling and Caregiving Programs: Including access to mental health services, licensed counselors, and caregiving tools including membership for finding care
• Referral Bonus: Receive a $3,000 cash bonus if referred candidate is hired and meets eligibility requirements
• Discounts: Discounts, cash back offers, and perks on thousands of brands
• LinkedIn Learning Membership: Support your development when accessing LinkedIn's online library of courses and videos

General Statements -

Applicants must be currently authorized to work in the United States on a full-time basis. The employer will not sponsor applicants for work visas.

Please note that all offers of employment are contingent upon the successful completion of a background check and, where permitted by law, a 5-panel drug test conducted after the offer letter is signed, which will screen for THC, opiates, PCP, cocaine, and amphetamines. Thank you for your understanding and cooperation.

Applicant Privacy Notice: CoreSite is committed to protecting the privacy and security of personal information submitted by applicants. The California Consumer Privacy Act (CCPA) requires us to provide you information about our personal information handling practices. As a result, we're providing this Privacy Notice that describes how we collect, use, share, and update personal information from individuals who wish to be considered for employment with CoreSite. To read the Applicant Privacy Notice, please go to .

Unauthorized reproduction or distribution of this job posting on external sites is prohibited without prior written consent from CoreSite. We are not responsible for any postings or offers not originating from our official channels or approved partners.

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