Critical Environment Engineer Jobs in California

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Critical Environment Facility Engineer
Location: Mission Campus / Critical Environment Facilities
Schedule: 4 x 10-hour shifts (multiple day, swing, and night shift opportunities available)
Employment Type: Full-Time
Position Summary
The Critical Environment Facility Engineer is responsible for the operation, maintenance, troubleshooting, and reliability of mission-critical facility infrastructure supporting data center and high-availability environments. This role requires broad technical expertise across mechanical, electrical, plumbing, controls, and fire protection systems to ensure maximum uptime, safety, and operational excellence.
The successful candidate will perform preventive, predictive, and corrective maintenance while supporting facility projects, change management activities, emergency response, and continuous improvement initiatives. Engineers will work independently and collaboratively with facility teams, vendors, and customers to maintain critical infrastructure in a 24/7 operational environment.
Key Responsibilities

• Operate, monitor, maintain, and troubleshoot critical facility systems and infrastructure.
• Perform preventive and corrective maintenance on HVAC, electrical, plumbing, controls, and fire protection systems.
• Respond to facility alarms, equipment failures, and emergency situations while ensuring rapid restoration of services.
• Monitor building automation systems (BAS), controls systems, and critical equipment performance.
• Support commissioning, testing, and startup activities for new equipment and facility upgrades.
• Participate in change management, lockout/tagout (LOTO), safety programs, and operational procedures.
• Coordinate with contractors, vendors, and service providers performing work within critical environments.
• Maintain accurate maintenance records, logs, permits, and compliance documentation.
• Identify reliability risks and recommend corrective actions to improve system performance and uptime.
• Participate in on-call and emergency response rotations as required.
• Conduct routine facility inspections and equipment rounds.
• Assist with energy management, sustainability initiatives, and operational efficiency programs.
• Support root cause investigations following equipment failures or operational incidents.

Required Qualifications

• High school diploma or GED required.
• Minimum 5 years of experience operating and maintaining commercial, industrial, semiconductor, healthcare, laboratory, or data center facilities.
• Demonstrated expertise in multiple facility disciplines, including:
  • HVAC systems
  • Electrical distribution systems
  • Plumbing systems
  • Building Automation Systems (BAS)
  • Direct Digital Controls (DDC)
  • Fire alarm systems
  • Fire suppression systems
• Strong understanding of critical facility operations and maintenance best practices.
• Ability to read and interpret mechanical, electrical, plumbing, and controls drawings.
• Experience troubleshooting complex facility systems and equipment failures.
• Strong knowledge of safety regulations and safe work practices.
• Proficiency with CMMS systems such as Maximo or equivalent.
• Ability to work flexible schedules, including days, nights, weekends, and holidays as assigned.

Required Certifications

• EPA Universal CFC Refrigerant Certification (required)
• Valid driver's license and ability to meet site access requirements

Preferred Qualifications

• Completion of a Stationary Engineer Apprenticeship Program
• State-issued Stationary Engineer License (where applicable)
• Fire Pump Testing and Inspection Certification
• Experience in semiconductor, mission-critical, or data center environments
• NFPA and fire protection systems knowledge
• Experience with VFDs, UPS systems, generators, switchgear, and critical cooling systems
• Mechanical or Electrical Trade Certification
• OSHA 10 or OSHA 30 certification
• Knowledge of energy management and facility optimization practices

Physical Requirements

• Ability to walk, climb ladders, work at heights, and access mechanical spaces.
• Ability to lift up to 50 pounds.
• Ability to perform extended periods of standing, walking, and equipment inspections.
• Ability to work in indoor and outdoor environments under varying conditions.

What Success Looks Like

• Maintains safe and reliable operations of critical facility infrastructure.
• Minimizes equipment downtime through proactive maintenance and rapid troubleshooting.
• Demonstrates strong technical competency across mechanical, electrical, plumbing, controls, and fire protection systems.
• Supports a culture of safety, operational discipline, and continuous improvement.
• Contributes to achieving facility uptime, compliance, and customer service objectives.

This position is ideal for a seasoned facility professional with extensive hands-on experience across multiple building systems who thrives in a fast-paced, mission-critical environment where reliability and safety are the highest priorities.
This position does not provide visa sponsorship. Candidates must be authorized to work in the United States without sponsorship.
Estimated compensation for this position:
163,000.00 - 180,000.00 USD per year
This range is an estimate and actual compensation may differ. Final compensation packages are determined by various considerations including but not limited to candidate qualifications, location, market conditions, and internal considerations.
Location:
On-site -Santa Clara, CA
If this job description resonates with you, we encourage you to apply, even if you don't meet all the requirements. We're interested in getting to know you and what you bring to the table!
Personalized benefits that support personal well-being and growth:
JLL recognizes the impact that the workplace can have on your wellness, so we offer a supportive culture and comprehensive benefits package that prioritizes mental, physical and emotional health. Some of these benefits may include:

• 401(k) plan with matching company contributions
• Comprehensive Medical, Dental & Vision Care
• Paid parental leave at 100% of salary
• Paid Time Off and Company Holidays
• Early access to earned wages through Daily Pay

At JLL, we harness the power of artificial intelligence (AI) to efficiently accelerate meaningful connections between candidates and opportunities. Using AI capabilities, we analyze your application for relevant skills, experiences, and qualifications to generate valuable insights about how your unique profile aligns with the specific requirements of the role you're pursuing.
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