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Mechanical Commissioning Engineer information

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$51K

$96.7K

$125.5K

How much do mechanical commissioning engineer jobs pay per year?

As of Jun 13, 2026, the average yearly pay for mechanical commissioning engineer in the United States is $96,653.00, according to ZipRecruiter salary data. Most workers in this role earn between $87,000.00 and $108,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Mechanical Commissioning Engineer, and why are they important?

To thrive as a Mechanical Commissioning Engineer, you need a strong background in mechanical engineering principles, system integration, and commissioning processes, often supported by a relevant engineering degree and professional certifications. Familiarity with commissioning management software, HVAC and BMS systems, and industry standards like ASHRAE is typically required. Strong problem-solving, communication, and project management skills help you coordinate effectively with multidisciplinary teams and address onsite challenges. These skills ensure safe, efficient, and compliant operation of mechanical systems during project handover, minimizing risks and delays.

What is the difference between Mechanical Commissioning Engineer vs Mechanical Maintenance Engineer?

AspectMechanical Commissioning EngineerMechanical Maintenance Engineer
CredentialsEngineering degree, certifications in commissioning or project managementEngineering or technical diploma, certifications in maintenance or equipment repair
Work EnvironmentPre-commissioning, start-up, and testing of new systemsOngoing maintenance, troubleshooting, and repair of existing equipment
Employer & IndustryConstruction, industrial plants, energy projectsManufacturing, facilities management, industrial plants

The main difference is that Mechanical Commissioning Engineers focus on testing and starting up new mechanical systems, ensuring they operate correctly before handover. Mechanical Maintenance Engineers, on the other hand, maintain and repair existing systems to ensure continuous operation. Both roles require technical skills and certifications but serve different stages of the equipment lifecycle.

What does a Mechanical Commissioning Engineer do?

A Mechanical Commissioning Engineer is responsible for ensuring that mechanical systems in buildings or industrial facilities are installed, tested, and functioning according to design specifications and safety standards. They oversee the commissioning process, which includes reviewing designs, inspecting installations, conducting tests, and troubleshooting any issues. Their work ensures that all mechanical equipment, such as HVAC, plumbing, and other systems, operate efficiently and safely before the facility is handed over to the client.

What are some common challenges faced by Mechanical Commissioning Engineers during project handover, and how can they be addressed?

Mechanical Commissioning Engineers often encounter challenges such as incomplete documentation, last-minute design changes, and coordination issues between different trades during project handover. Addressing these challenges requires proactive communication with project managers, thorough documentation throughout the commissioning process, and early involvement in project meetings. Staying organized and developing checklists for system validation can help ensure all mechanical systems meet performance specifications before handover, resulting in a smoother transition to operations.
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Mechanical Commissioning Engineer jobs near you
Infographic showing various Mechanical Commissioning Engineer job openings in the United States as of June 2026, with employment types broken down into 91% Full Time, 3% Part Time, 1% Temporary, 1% Contract, and 4% Nights. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution, with an average salary of $96,653 per year, or $46.5 per hour.

Data Center Services Mechanical Commissioning Engineer

CAI

Chicago, IL

Full-time

Medical, Life, Retirement, PTO

Posted 14 days ago

Job description

THIS IS NOT A DATA ENGINEERING RELATED POSITION
 
CAI seeks Mechanical Commissioning Engineers with a minimum of five to seven years' experience in Data Center Commissioning to support development and execution of all mechanical aspects of commissioning projects.
 
Position Description:
This position supports development and execution of all mechanical aspects of assigned commissioning projects from initial engagement, design reviews, checklists, safety support, script development, vendor coordination, testing and report development through turn over to the client. The Mechanical Commissioning Engineer will support the development of the mechanical test schedule, finalize mechanical test procedures, review project submittals for consistency with the design intent, basis of design and the owner's project requirements, and maintain project cadence for the mechanical systems testing and associated Building Automation Systems. The Mechanical Commissioning Engineer is to support the planning and execution of commissioning for the mechanical infrastructure of the mission critical facility. They will be expected to execute against the project schedule through the coordination of contractors and/or vendors to complete the desired mechanical systems testing.
 
CAI DC Mechanical Commissioning Engineer will be exposed to cutting edge technologies in the Hyperscale and other spaces. You will have an opportunity to work with recognized subject matter experts allowing YOU to be a key player in bringing data technologies to market. As part of our company culture, we invest in YOUR future, and commit to hands on certifications as well as professional training. Our collaborative culture ensures that our customers benefit from exemplary work across our entire range of professional services.
 
Responsibilities:
Support and contribute to all aspects of safety for all mechanical tests.
Support complete commissioning and performance acceptance testing of the mechanical infrastructure systems.
Development of all mechanical test procedures, MOPS, SOO's and checklists.
QA/QC of all mechanical test procedures.
Provide input and insight to the overall commissioning plan.
Develop reports for the mechanical testing and contribute to a daily report to the Commissioning Project Manager.
Attend and be an active participant of customer equipment Factory Witness Test
Assist with vendor coordination and management.
Perform equipment inspection to ensure build adherence to vendor submittal.
Provide test documentation that equipment is delivered, installed, and tested correctly and set to function properly for the customer.
Support and perform design specification review, manufacturer submittals, one line drawing sets, and project schedule documentation.
QA/QC of mechanical equipment installation\startup
Execute test scripts to confirm equipment and system operation to design specification.
Ensure safe work practices are followed by the commissioning team and customer site.
Engage with customers and vendors to ensure positive experience, goals achievement, and schedule adherence.
Provide daily status reports for mechanical commissioning team status.
Conduct facility walk downs, turnover, and punch list reviews.
General understanding of LEED specifications and requirements.
Look for new opportunities for CAI to provide service and value to customer.
Duties may be increased as experience and skill allow.
 
Requirements include:
Position Requirements: 
Bachelor's degree or equivalent experience
Minimum of five to seven years Data Center Commissioning experience.
Knowledge of OSHA safety requirements.
Good written and verbal communication skills.
Ability to read and interpret mechanical drawings, P&ID's and specifications.
Knowledge of mission critical design concepts.
Knowledge of various Building Automation/Monitoring Systems (BAS/BMS), Air Handlers, Humidifiers, Variable Refrigerant Flow, Computer Room Air Conditioners/Handlers (CRAC/CRAH), Evaporators, Adiabatic Coolers, Pressure/Temperature/Humidity sensors & Flowmeters.
Knowledge of basic thermodynamics and heat transfer and fluid flow.
Knowledge of the Test, Adjust and Balance (TAB) process.
Knowledge of mechanical trend analysis.
Strong experience with Word, Excel and PowerPoint. Can effectively create final products in all three programs.
Work under construction site conditions
 
Other Requirements: 
Excellent oral and written English is required
Extensive travel may be required (75%)
Candidates must have a Passport or the ability to immediately get a Passport
Able to work in the US without sponsorship now or any time in the future. 
 
About CAI
CAI is a 100% employee-owned company established in 1996, that has grown year over year to more than 800 people worldwide. We provide commissioning, qualification, validation, start-up, project management and consulting services related to operational readiness to FDA regulated and other mission critical industries.
 
Are You Ready?
Our approach is simple; we put the client's interests first, we do not stop until it is right, and we will do whatever it takes to get there.
As owners of CAI, we are committed to living our Foundational Principles, both professionally and personally:
We act with integrity
We serve each other
We serve society
We work for our future
 
With employee ownership, one person's success is everyone's success; we work diligently to accomplish team goals. We place Team Before Self, demonstrate Respect for Others, and possess a can-do attitude. That is how we have grown exponentially.
 
Benefits
Our full-time positions offer competitive compensation and benefits which include: up to 15% retirement contribution, 24 days PTO and 5 sick days per year, health insurance at extremely low cost to employee, financial support for both internal and external professional education as well as 70% long term disability paid for by the company.
#LI-MV1 #MISSIONCRITICAL
$91,300 - $107,300 a year
Average salary range, not including benefits or compensatory time and possible discretionary bonuses.
 
CAI Benefits:
Comprehensive Health Insurance coverage
24 days of Paid Time Off
ESOP/401K - 15% Company Contribution (US Only)
Company paid Life Insurance
Company paid Long Term Disability
We are an equal opportunity employer; we are proud to employ veterans and promote a diverse culture in our workplace. Diversity is a strength for our global company. We pledge that CAI will be operated in a way that is fair and equitable to all - our employees, our customers, and the broader society.
 
This job description is not all inclusive and you may be asked to do other duties. CAI will also consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of the FCO. 
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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