Lead Engineer - Critical Environments

Company: JLL
Location: Aurora
Posted on: April 4, 2026

Job Description:

JLL empowers you to shape a brighter way . Our people at JLL 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. Union Role The Lead Engineer - Critical Environments supervises and directs operating engineers in installation, repair, and maintenance of all base building and critical system machinery and equipment. Responsible for supervising the operating team on their shift. Assumes the Chief Engineers responsibilities if the Chief Engineer is not on site. Principal Duties and Responsibilities Task will include but not be limited to: Supervise and direct maintenance staff on shift and monitor performance of assigned responsibilities. Perform and/or direct the performance of all maintenance departmental service requests, ensuring that work performed in these areas is accomplished efficiently with a minimum amount of disruption and inconvenience. Check malfunctioning equipment and ascertain corrective action required to restore to satisfactory operating condition. Provide training and supervision aimed at expanding the capabilities of the operations staff. Specific duties include, but not limited to: Demonstrating the proper use and care of tools and instruments, giving hands on instruction in basic maintenance, safety, and troubleshooting procedures, recommending relevant outside engineering courses for enrollment, and instilling an overall level of professionalism in manner and appearance. Supervise and implement the preventative maintenance program. Specific duties include but are not limited to: scheduling of preventative maintenance with a minimum disruption of building services, performing and/or delegating preventative maintenance tasks to the appropriately qualified maintenance staff member, orders parts and equipment required for repair, maintenance and installation of new equipment and facilities, and maintains inventory. Direct the performance of contracted maintenance work as needed. Specific tasks include but are not limited to: ensuring the timely performance of maintenance contract work, overseeing the fulfillment of equipment warrantee obligations by the installer and securing equipment manuals and drawings from the installers/contractors. Responsible for maintaining, monitoring and performing preventive maintenance and continuous operation of all building systems including: fire/life safety, mechanical (HVAC, plumbing, controls) electrical (lighting, UPS, PDU, generators, primary switch gear), emergency backup systems and hot water systems; monitors operation, adjusts, and maintains refrigeration, chilled water, and air conditioning equipment; boilers, and ventilating and hot water heaters; pumps, valves, piping and filters; other mechanical and electrical equipment; record readings and make adjustments 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. Ensure the availability of an adequate operating inventory of tools and supplies. Specific duties include, but are not limited to: Preparing and submitting purchase-order requests, developing sources for stock materials and performing periodic checks for supplies. Responsible for the operational management and effective daily leadership and administration of the engineering team with the objectives of safely, efficiently, and effectively operating machinery and systems in a cost-effective manner. The Lead Operating Engineer must ensure the highest level of professionalism, while meeting the clients’ needs, and commitment to achieving the goal of 100% uptime throughout the engineering team. Responsible for protecting and improving the value of the clients’ assets and ensuring that building engineering systems continue to perform their intended function. Responsible for overseeing the activities of contractors working within the building either as representatives of the building itself or tenants operating within the buildings. Responsible for keeping records of buildings rounds and readings, all engineering logs and engineering data sheets. Responsible for advance training and notification to all contractors so that they are informed and knowledgeable with respect to the building’s critical functions and the work they are to perform, including an incident contact response list. Responsible for understanding and complying with emergency escalation procedures. Ensure that the CWA (Critical Facility Work Authorization) is a well-understood process among the building staff, engineers, tenants and contractors who perform work on the building’s critical infrastructure. Ensure strict adherence to Critical Awareness Process, Technical Bulletins, established engineering guidelines, processes, and procedures. Assist Chief Engineer in implementation of Key Performance Indicators (KPI’s) and Individual Performance Plan’s. Performs additional job duties as requested. Supervisory Responsibilities Assist Chief Engineers in supervising operating engineers. Carries out supervisory responsibilities in accordance with the policies enumerated with Jones Lang LaSalle and applicable laws. Planning, assigning, and directing work. Minimum Requirements: Education & Experience Must have hands-on experience in a data center/critical facility, including UPS Systems, emergency generators, and switch-gear High School diploma or GED equivalent 5 years related work experience, including supervisory experience Operating Engineers license (SMA) or equivalent Certification as a Universal Technician for CFC’s (or within 90 days of employment) Language Skills Demonstrated verbal/written communication skills. Ability to read and interpret documents such as safety rules, operating and maintenance instructions, and procedure manuals. Ability to read, analyze, and interpret technical procedures, or governmental regulations and codes. Ability to write routine reports and correspondence. Ability to speak effectively before small groups of tenants or fellow employees. Other Skill and Abilities Working knowledge or the capability of developing proficient knowledge of Microsoft Word, Microsoft Excel, Outlook and Microsoft Access and any other software packages. Must be able to professionally interact with tenants and contractors. Preferred Requirements: Corrigo Experience. MCIM / Salesforce Experience. Zendesk Experience. Service Now Experience. Received EPA 608. Trained in NFPA70E. Physical Requirements: This position will require the following: Walking large, campus-like settings. Frequent walking, climbing, bending, kneeling, lifting, stooping, and working/extending overhead, including: 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. Customer Environment Description A leading global data center developer and operator specializing in delivering state-of-the-art digital infrastructure solutions across the globe. With more than 50 high-performance mission critical facilities worldwide, the company ensures the continued operation of digital infrastructure for nearly 800 customers, including approximately 200 Fortune 1000 companies. Demanding customer and fast-paced environment, serving some of the largest companies in the world. JLL operates 40 sites for the customer that includes campuses and individual data centers. We provide operational support including operating engineers, chief operating engineers, facility managers, and regional managers. JLL has been supporting the customer since 2021. The relationship has continued to grow as the customer’s business has grown. We continue to support current locations and assist in establishing new sites across the United States. We continue to struggle meeting the KPIs set forth by the customer, particularly when it comes to incidents. With an increased focus on training and adequate staffing models, we will be able to meet our obligations and exceed expectations. Our goal is to continue a fruitful relationship that allows us to grow with the customer. This will provide many opportunities for our employees and allow our customer to scale their business. DCR This position does not provide visa sponsorship. Candidates must be authorized to work in the United States without sponsorship. Estimated compensation for this position: 88,000.00 – 100,000.00 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 –Aurora, IL 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. Pursuant to the Arizona Civil Rights Act, criminal convictions are not an absolute bar to employment. Pursuant to Illinois Law, applicants are not obligated to disclose sealed or expunged records of conviction or arrest. Pursuant to Columbia, SC ordinance, this position is subject to a background check for any convictions directly related to its duties and responsibilities. Only job-related convictions will be considered and will not automatically disqualify the candidate. California Residents only If you are a California resident as defined in the California Consumer Privacy Act (CCPA) please view our Supplemental Privacy Statement which describes your rights and disclosures about your personal information. If you are viewing this on a mobile device you may want to view the CCPA version on a larger device. Pursuant to the Los Angeles Fair Chance Initiative for Hiring Ordinance, JLL will consider for employment all qualified Applicants, including those with Criminal Histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. Accepting applications on an ongoing basis until candidate identified.

Keywords: JLL, Arlington Heights , Lead Engineer - Critical Environments, Engineering , Aurora, Illinois