Mechanical SME, Data Centers

JLL•LaGrange, GA

3d•Onsite

About The Position

As a Mechanical Subject Matter Expert (SME) at JLL, you will serve as the technical authority and strategic advisor for complex mechanical systems across a large hyperscale data center. The role requires deep expertise in HVAC design, mechanical system optimization, and advanced building technologies, while providing consultative support to engineering teams, clients, and project stakeholders. You will lead technical assessments, drive innovation initiatives, and establish best practices to improve system performance, energy efficiency, and operational reliability. The position is on-site in LaGrange, Georgia. It involves after-hours support and 24x7 response for service-impacting events involving the mechanical plant. Candidates must be authorized to work in the United States without visa sponsorship.

Requirements

At least 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 or raised-floor environments.
Strong customer service and interpersonal skills.
Universal EPA 608 Certification.
Experience maintaining and repairing CRAC (Liebert) systems.
Licenses required by the authority having jurisdiction.
Working knowledge of computer applications, including Word and Excel.
Two years of trade school or a documented apprenticeship in relevant craft skills.
Valid driver's license.
Must be available for call-in work.
Must be authorized to work in the United States without visa sponsorship.
Ability to lift up to 80 lbs.; work at heights; frequently climb, bend, lift, kneel, stoop, and work overhead; and work in extreme cold or heat.
Ability to drive for long periods, climb a ladder with a 300 lb weight limit while carrying an approximately 20 lb tool bag, and climb ladders up to 30 feet.

Nice To Haves

Expertise in a specific craft area such as electrical, HVAC, piping/plumbing, central utility plant operations, or material handling equipment.
Familiarity with building automation systems and fire/life safety.

Responsibilities

Oversee HVAC, electrical, and plumbing systems specific to data center operations.
Implement and maintain critical environment protocols and Method of Procedure (MOP) processes.
Conduct regular performance analyses of facility mechanical and electrical systems.
Apply mechanical engineering principles to improve data center efficiency and reliability.
Design and implement cooling solutions optimized for high-density server environments.
Analyze and enhance airflow management strategies.
Develop and execute preventive maintenance schedules for critical infrastructure.
Lead root cause analysis of system failures or inefficiencies and implement corrective actions and system upgrades.
Serve as the first point of contact for service-impacting events involving the mechanical plant; help troubleshoot and mitigate incidents and assist with root cause analyses.
Provide after-hours support for the mechanical plant, including 24x7 response.
Propose and implement energy-saving initiatives to reduce Power Usage Effectiveness (PUE).
Evaluate and integrate green technologies suitable for data center operations.
Ensure adherence to industry standards, including ASHRAE and ISO, and local regulations.
Oversee safety protocols and conduct regular safety audits.
Maintain current knowledge of data center best practices and emerging technologies.
Mentor and guide facility technicians and engineers.
Manage complex data center infrastructure projects, including expansions and upgrades.
Collaborate with equipment vendors and service providers to support optimal system performance.
Communicate infrastructure status and improvement plans to executive management.
Perform other duties as required.