Critical Environments Mechanical Lead

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Our people at JLL and JLL Technologies are shaping the future of real estate for a better world by combining world class services, advisory and technology for our clients. We are committed to hiring the best, most talented people and empowering them to thrive, grow meaningful careers and to find a place where they belong. Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward.

As a Maintenance Lead - Mechanical (Critical Environments), you will leverage extensive mechanical engineering experience and over 5 years of data center operations expertise to manage and optimize critical systems in high-performance data center environments. This role combines technical leadership with hands‑on system management to ensure maximum uptime and operational efficiency.

• Oversee HVAC, electrical, and plumbing systems specific to data center operations
• Implement and maintain critical environment protocols and Method of Procedure (MOP) processes
• Apply mechanical engineering principles to improve data center efficiency and reliability
• Design and implement cooling solutions optimized for high‑density server environments
• Develop and execute comprehensive preventive maintenance schedules for all critical infrastructure
• Lead root cause analysis for system failures and implement corrective actions based on engineering assessments
• Propose and implement energy‑saving initiatives to reduce Power Usage Effectiveness (PUE)
• Ensure adherence to industry standards (ASHRAE, ISO) and local regulations
• Oversee safety protocols and conduct regular safety audits
• Mentor and guide a team of facility technicians and engineers
• Manage complex data center infrastructure projects, including expansions and upgrades
• Collaborate with equipment vendors and service providers to ensure optimal system performance
• Communicate effectively with executive management on infrastructure status and improvement plans

• 4+ years of technical experience in building engineering with a strong background in HVAC, plumbing, electrical, and production equipment repair and maintenance
• Experience working in Data Centers/Raised Floor Environment
• Universal EPA 608 Certification
• CRAC (Liebert) maintenance and repair experience
• Licenses as required by authority having jurisdiction
• 2 years of trades school or documented apprenticeship in relevant craft skills

• Expertise in one specific craft area (Electrical, HVAC, Piping/Plumbing, Central Utility Plant Operations, Material Handling Equipment)
• Familiarity with building automation systems and fire/life safety

• Lifting up to 80 lbs.
• Working from heights.
• Frequently climbing, bending, lifting, kneeling, stooping, and working/extending overhead.
• Working in adverse conditions (i.e., extreme cold, extreme hot).
• Driving for long periods of time.
• Climbing a ladder with a 300 lb weight limit while carrying a tool bag weighing approximately 20 lbs.
• Climbing a ladder up to 30 feet.
• Must be available for Call‑in work and perform other duties as required.

#DCR

This position does not provide visa sponsorship. Candidates must be authorized to work in the United States without employer sponsorship.

94,300.00 –  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.

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!

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