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3Rd Class Operating Engineer Jobs in Ontario (NOW HIRING)

Bunge

Operating Engineer - 3rd Class

Hamilton, ON

CA$43.11/hr

Third Class Operating Engineer Certification is required. * Valid Ontario Class G driver's license (or equivalent). * Experience operating industrial processing equipment, utility systems, or ...

Bunge

Operating Engineer - 3rd Class

Hamilton, ON

CA$43.11/hr

Third Class Operating Engineer Certification is required. Valid Ontario Class G driver's license (or equivalent). Experience operating industrial processing equipment, utility systems, or production ...

Sazerac Company

Operating Engineer

Collingwood, ON

Second Class Operating Engineer certificate / credentials are required for this position. Second Class Operating Engineer required to operate, maintain and repair all Boilers, Pressure Vessels and ...

Sazerac Company

Sazerac Company Overview Sazerac est l'une des plus importantes distilleries prive en Amerique du Nord avec ses 9 sites de production et plus de 2200 employes. Localise a Montreal aux abords de ...

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3Rd Class Operating Engineer information

What is a 3rd class operating engineer?

3rd Class Operating Engineers are licensed professionals responsible for operating, maintaining, and monitoring boilers, engines, and other mechanical systems within industrial, commercial, or institutional facilities. They ensure that equipment runs safely and efficiently, often performing routine inspections, troubleshooting issues, and carrying out minor repairs. Their license typically allows them to work with specific types and sizes of equipment, as regulated by local or regional authorities. Advancement to higher classes of operating engineers generally requires additional experience and successful completion of further examinations.

What are the typical daily responsibilities of a 3rd class operating engineer in a commercial building setting?

As a 3rd Class Operating Engineer in a commercial building, your daily tasks often include monitoring, operating, and maintaining boilers, HVAC systems, and other mechanical equipment. You'll perform routine inspections, log equipment readings, and respond to alerts or malfunctions as they arise. Collaboration with senior engineers and building maintenance staff is common, especially when troubleshooting or during scheduled repairs. Staying organized and attentive to detail is essential, as safety and compliance with regulations are top priorities in this role.

What are the key skills and qualifications needed to thrive as a 3rd class operating engineer, and why are they important?

To thrive as a 3rd Class Operating Engineer, you need a solid knowledge of mechanical systems, boiler operations, and safety protocols, typically supported by a valid 3rd Class Operating Engineer license or certificate. Familiarity with equipment like HVAC systems, pressure vessels, and computerized building management systems is often required. Strong problem-solving skills, attention to detail, and effective communication help you respond to emergencies and coordinate with maintenance teams. These skills are crucial for ensuring safe, efficient, and compliant operation of complex building systems.

What is the difference between 3Rd Class Operating Engineer vs 2Nd Class Operating Engineer?

Aspect3Rd Class Operating Engineer2Nd Class Operating Engineer
CredentialsRequires a 3rd Class license, often with some work experienceRequires a 2nd Class license, more extensive experience and testing
Work EnvironmentOperates and maintains heating, cooling, and other mechanical systems in buildingsHandles more complex systems, often overseeing multiple equipment types
Employer & IndustryCommonly employed in commercial buildings, hospitals, and industrial facilitiesWorks in similar settings but with greater responsibilities and system complexity

The main difference between a 3rd Class Operating Engineer and a 2nd Class Operating Engineer lies in their licensing requirements, experience, and scope of responsibilities. A 2nd Class license allows for handling more complex systems and typically requires more extensive training and experience. Both roles are vital in maintaining building systems, but the 2nd Class Operating Engineer has a broader scope of work and higher qualifications.

How much does a 3rd class operating engineer make?

A 3rd class operating engineer in Ontario typically earns between CAD 50,000 and CAD 70,000 annually, depending on experience, location, and the specific employer. Certification and the ability to operate various mechanical systems can influence salary levels.
3Rd Class Operating Engineer jobs near you
Infographic showing various 3Rd Class Operating Engineer job openings in Ontario as of September 2026, with employment types broken down into 86% Full Time, 9% Part Time, and 5% Nights. Highlights an 100% In-person job distribution.

Third Class Operating Engineer

Scarborough, ON • On-site

Atlantic Packaging Products
See more jobs at Atlantic Packaging Productsexternal

CA$44.23/hr

Full-time

Medical, Dental, Vision

This job post has expired 1 day ago. Applications are no longer accepted.

Job description

“Join us in building Careers and shaping Experiences Beyond the Box”

About Us

At Atlantic Packaging, every box tells a story and yours begins here. As a proudly Canadian-owned company with over 80 years of excellence in the corrugated packaging industry with operations within North America (Ontario, Quebec and United States), we’re committed to sustainability, customer excellence and community impact. Since 1945, we’ve supported local jobs and built a legacy of trust with our clients and team members. At Atlantic, your ideas matter, your growth is supported and your work makes a real impact. The hourly wage rate for this position: $44.23.

The Opportunity

Reporting to the Chief Engineer, the 3rd Class Operating Engineer is responsible for the safe, efficient, and reliable operation of the boiler plant and associated utility systems. This role supports manufacturing operations by monitoring, maintaining, and troubleshooting high-pressure boilers, fuel handling systems, compressors, heating systems, and related equipment. The successful candidate will play a key role in ensuring equipment reliability, regulatory compliance, workplace safety, and continuous plant performance while contributing to a collaborative and safety-focused environment.
 
What You'll Do
 
  • Operate, monitor, and maintain high-pressure water tube boilers, fluidized bed boilers, compressors, and associated utility equipment.
  • Perform boiler water testing and ensure systems operate safely and efficiently.
  • Monitor and support building fire alarm, steam heating, and glycol heating systems.
  • Troubleshoot equipment issues and perform routine maintenance to maximize reliability and uptime.
  • Follow all health, safety, environmental, and operating procedures, including the use of required PPE.
  • Support plant operations by performing additional duties as assigned.

What You Bring

  • Valid Ontario 3rd Class Operating Engineer's Certificate of Qualification.
  • Previous experience maintaining and operating high-pressure water tube boilers.
  • Experience with solid fuel handling, combustion systems, and boiler auxiliaries.
  • Hands-on mechanical maintenance experience in an industrial or manufacturing environment.
  • Strong troubleshooting skills with a focus on safety, compliance, and operational excellence.
  • Ability to lift up to 50 lbs repeatedly and work in a physically demanding environment.
  • Willingness to wear required PPE, including respirators, Tyvek suits, safety glasses, gloves, and safety footwear.

What We Offer

  • Comprehensive health, dental and vision coverage (dependents included)
  • Teamwork-focused culture with sustainability initiatives and social events
  • A culture of appreciation through a point-based recognition
  • Opportunities for advancement and internal movement
  • Education assistance for continuous skill development
  • Academic scholarships for employees’ children
  • Safety equipment and PPE support program
  • Retirement savings and wellness initiatives
  • Employee Assistance Program (EAP)

Please Note

Candidates who are 18 years or older are required to complete a criminal and background check. Details will be provided through the application process. This posting is for an existing vacancy. 

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