Chiller / Boiler Operating Mechanic

JLL; Creve Coeur (MO); On-site; USD 65,000 - 90,000; Full time

Job summary

JLL is seeking a facilities maintenance professional for a hybrid role in the Utilities department. You will operate, maintain, and repair boilers, chillers, cooling towers, and water treatment systems, with relief coverage for control room operations to ensure 24/7 facility reliability.

Responsibilities include preventative maintenance on boilers and chillers, building automation operation, safety compliance, and documentation of all activities using the work order system.

Qualifications

• Minimum high school diploma or equivalent.
• Two years of trades schooling in high pressure boiler and industrial refrigeration/HVAC operation theory.
• 2+ years of experience in facility/plant engineering maintenance or equivalent education.
• Class 1 Stationary Engineers License.
• Valid driver's license.

Responsibilities

• Perform scheduled preventive maintenance on boilers, chillers, pumps, and cooling tower components.
• Operate and maintain high-pressure steam and hot water boilers in compliance with regulations.
• Troubleshoot system issues and determine whether repairs require internal resources or outside services.
• Monitor and operate control room systems for 24/7 alarm response and actions.
• Document all maintenance activities in work order software to keep equipment records.

Skills

High-pressure boiler operation

HVAC operation

Troubleshooting

Building automation systems

Safety compliance

Education

High school diploma

Trade school training

Tools

Work order software

Microsoft Excel

Outlook

Job description

What this job involves:

This hybrid position combines utilities maintenance and operations within JLL's Utilities department. You'll operate, maintain, and repair critical facility support equipment including boilers (Cleaver Brooks), air compressors (Kaeser & Atlas Copco), chillers (TRANE & York), cooling towers, water treatment systems, and various pumping infrastructure. Additionally, you'll provide relief coverage for control room operations, ensuring 24/7 facility reliability. Your role is vital to maintaining facility research capabilities through reliable utility operations while embracing JLL's commitment to safety excellence and operational continuity.

What your day-to-day will look like:

• Perform scheduled preventative maintenance on utilities equipment including boilers, chillers, pumps, and cooling tower components
• Operate and maintain high-pressure steam and hot water boilers in compliance with manufacturer recommendations and applicable regulations
• Troubleshoot system issues and determine whether repairs require internal resources or outside services
• Monitor and operate control room systems for immediate alarm response and corrective action on a 24/7 basis
• Apply lock out/tag out processes consistently before any maintenance work to ensure safety compliance
• Start and stop equipment following site heating and cooling load demands using building automation systems
• Document all maintenance activities and operations in writing and work order software to maintain continuous equipment records
• Monitor water testing, treatment, and chemical usage for boilers and chilled water systems per water safety management plans
• Execute proper equipment start-up and shut-down procedures while making safe operational adjustments
• Complete required safety training platforms and computer-based training before assigned due dates
• Monitor fuel storage systems and maintain usage logs in compliance with permits and regulations

Required Qualifications:

• Minimum high school diploma or equivalent
• Two years of trades schooling in high pressure boiler and industrial refrigeration/HVAC operation theory
• 2+ years of experience in facility/plant engineering maintenance or equivalent education
• Class 1 Stationary Engineers License
• Valid driver's license
• Ability to lift 50-pound objects regularly and work in varying temperature conditions
• Capability to work 24/7 shift coverage as needed

Preferred Qualifications:

• EPA Universal Refrigeration License
• OSHA 30 Hour Certification
• Forklift, scissor lift, and aerial lift certifications
• Experience with high pressure boiler theory, chillers over 500 tons, and building automation systems
• Computer skills including Microsoft Excel, Word, and Outlook
• Ability to interpret piping and instrumentation drawings and troubleshoot complex systems
• Experience with water chemical treatment testing and documentation
• Strong interpersonal communication skills and team collaboration abilities

Location: Onsite - Creve Coeur, MO

Schedule: 1st shift with relief coverage availability