Critical Environment - Operating Engineer (Night shift)

Company: *US AMR-Jones Lang LaSalle Americas, Inc.
Location: Saint Louis
Posted on: January 16, 2026

Job Description:

JLL empowers you to shape a brighter way . 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. Night shift Critical Environment - Operating Engineer What this job involves: The Critical Environments Operating Engineer is responsible for delivery of best practice systems and problem resolution on all data center electrical and mechanical infrastructure (UPS, MV electrical systems, generators, cooling systems etc.) What is your day to day? Responsible for maintaining, monitoring, and performing preventive maintenance and continuous operation of all building systems to maintain 100% Up-time including: fire/life safety, mechanical systems such as (HVAC, chillers, crac, crah, plumbing, controls), electrical including emergency backup systems such as (lighting, UPS, ATS, STS, PDU, generators, primary switchgear, power distribution, transformers), and hot water systems. Monitors operation, adjusts, and maintains refrigeration, chilled water, and air conditioning equipment; boilers, and ventilating and water heaters; pumps, valves, piping, and filters; other mechanical and electrical equipment. Must record readings and make and adjust where necessary to ensure proper operation of equipment. Requires the ability to analyze the operation of various systems, determine the cause of any problems/malfunctions and take corrective action as required. Comply with departmental policy for the safe storage, usage, and disposal of hazardous materials. Maintains a clean and safe workplace. Learn and understand the data center site in-order to manage incidents and events that put the critical systems at risk. Work order management, including CMMS, Vendor Management, and Customer Facing Tickets. Understanding and complying with emergency escalation procedures. Perform additional job duties as required. Why You'll Love This Role: Work with cutting-edge technology in a fast-growing industry. Clear career advancement opportunities in critical infrastructure. Be part of a team that literally keeps the digital world running. Physical Work Abilities & Requirements: This position requires frequent walking, climbing, bending, kneeling, lifting, stooping, and working/extending overhead, including: Walking large, campus-like settings. Lifting a minimum of 50 lbs. Climbing stairs and navigating rooftops to access equipment. Using ladders up to 30 ft and working from heights. Ability to Climb a ladder with a 300-lb weight limit. Must be able to work different schedules. Must be able to work Holidays. Must be able to respond to site emergencies. Required Qualifications 2 years' experience working in a data center/critical facility. Experience with building systems, including UPS systems, emergency generators, and switchgears. Demonstrated verbal/written communication skills. Working knowledge of computer applications including MS Office (Word, Excel, Outlook), Google Suite and CMMS. Preferred Qualifications Corrigo experience Universal EPA 608 certification Trained in NFPA70E HVACjobs This position does not provide visa sponsorship. Candidates must be authorized to work in the United States without employer sponsorship. Location: On-site –St. Louis, MO 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. JLL Privacy Notice Jones Lang LaSalle (JLL), together with its subsidiaries and affiliates, is a leading global provider of real estate and investment management services. We take our responsibility to protect the personal information provided to us seriously. Generally the personal information we collect from you are for the purposes of processing in connection with JLL’s recruitment process. We endeavour to keep your personal information secure with appropriate level of security and keep for as long as we need it for legitimate business or legal reasons. We will then delete it safely and securely. For more information about how JLL processes your personal data, please view our Candidate Privacy Statement . For additional details please see our career site pages for each country. For candidates in the United States, please see a full copy of our Equal Employment Opportunity policy here . Jones Lang LaSalle (“JLL”) is an Equal Opportunity Employer and is committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process – including the online application and/or overall selection process – you may email us at HRSCLeaves@jll.com . This email is only to request an accommodation. Please direct any other general recruiting inquiries to our Contact Us page > I want to work for JLL. Accepting applications on an ongoing basis until candidate identified.

Keywords: *US AMR-Jones Lang LaSalle Americas, Inc., St. Louis , Critical Environment - Operating Engineer (Night shift), Engineering , Saint Louis, Missouri