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HVAC Technician

Jones Lang LaSalle · Pleasant Prairie, WI · Full time

Posted Oct 1, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a time you had to follow an SOP that you thought was wrong.

What they are checking: Whether they follow the procedure and raise concerns through proper channels instead of improvising.

Tell me about a time you made an error in documentation. What did you do?

What they are checking: Whether they correct records properly under good documentation practice instead of hiding mistakes.

What would you do

An ULT freezer alarms at 2 a.m. and it holds research samples. Walk me through your response.

What they are checking: Whether they act fast to protect irreplaceable samples, including moving product and escalating.

How do you work with quality assurance when they question your maintenance records?

What they are checking: Whether they see QA as a partner and respond with facts rather than defensiveness.

About the work

You'll maintain minus 80 degree ultra-low temperature freezers. What usually fails on those, and how do you catch it early?

What they are checking: Whether they know ULT freezer failure modes like cascade systems, condensers and door seals.

What does working under GMP change about how you do and record maintenance?

What they are checking: Whether they understand that in GMP work, undocumented work is treated as work not done.

How do you troubleshoot a cold room that won't hold temperature?

What they are checking: Whether they work through refrigeration, defrost, door seals, airflow and controls methodically.

What's your role in validating new or modified equipment?

What they are checking: Whether they understand IQ and OQ support and why changes must go through change control.

How do you keep track of parts inventory for specialized equipment?

What they are checking: Whether they plan ahead for long-lead parts so critical equipment is not down waiting.

What certifications do you hold for refrigeration work?

What they are checking: Whether they have the EPA and trade credentials needed to legally handle refrigerants.

Practice this interview out loud.

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The full job description

As published by Jones Lang LaSalle.

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. Key Responsibilities • Perform preventative maintenance, troubleshooting, and repairs on ultra-low temperature freezers (-80°C), cold rooms, and HVAC systems • Execute maintenance activities in compliance with GMP regulations and standard operating procedures (SOP) • Respond to emergency calls and equipment alarms to minimize downtime of critical equipment • Document all maintenance activities according to GMP requirements • Diagnose mechanical, electrical, and control system issues across specialized equipment • Participate in validation activities for new and modified equipment • Support engineering projects related to facility infrastructure improvements • Maintain accurate records of parts inventory and coordinate procurement of supplies • Collaborate with facilities team, quality assurance, and other departments to ensure equipment reliability • Must be able to work with minimal to no supervision • Work overtime or temporarily modify shift schedule as needed • Be part of on-call after hours Preferred Qualifications • Technical degree/certification in HVAC, Refrigeration, or related field • Minimum 3-5 years' experience maintaining scientific or laboratory equipment, preferably in a GMP environment • Demonstrated knowledge of refrigeration systems, particularly ultra-low temperature applications • Experience with building management systems (BMS) and environmental monitoring systems (EMS) • Proficiency in reading electrical schematics and mechanical drawings • Understanding of GMP requirements and their application to equipment maintenance • Valid EPA certification for refrigerant handling preferred • Strong documentation skills with attention to detail • Ability to work in various environmental conditions and lift up to 50 pounds • Ability to regularly climb extension ladders, roof ladders, stepladders, and stairs as required during shift. • Ability to stretch/reach on a repetitive basis during shift. • Ability to walk extensively throughout the facility during shift. Work Environment • Work is performed in a regulated GMP facility • May require working in temperature-controlled environments • Some emergency/on-call duties may be required • Safety protocols must be strictly followed when handling refrigerants and working with electrical systems • Have the flexibility to bend/stoop, squat repetitive during shift. Physical Requirements • Have the ability to regularly lift up to 50 lbs • Have the ability to regularly climb extension ladders, roof ladders, stepladders, and stairs as required during shift • Have the flexibility to bend/stoop, squat repetitive during shift • Have the ability to stretch/reach on a repetitive basis during shift • Have the ability to walk extensively throughout the facility during shift Location: Pleasant Prairie, WI Work Shift: 1st Shift / Morning shift This position does not provide visa sponsorship. Candidates must be authorized to work in the United States without sponsorship. Location: On-site –Pleasant Prairie, WI 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 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.

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