Are you looking for a role that will challenge you? Can you see yourself as an Operating Engineer, Class 3, ensuring the safe and efficient operation of critical utility, power generation, and HVAC systems that support site operations? Do you enjoy monitoring complex equipment, troubleshooting issues, maintaining system performance, and contributing to a safe and reliable work environment? If you answered yes, then this may be the job for you! Apply today!

What you will be doing!
Operating Powerhouse equipment to support site operations. * Operating heating, ventilation, and air conditioning (HVAC) equipment, including boilers, pumps, refrigeration compressors, ventilation systems, and associated equipment.

- Ensuring equipment is operated safely and efficiently in accordance with established procedures and instructions.
- Testing operating and safety controls, including pressure switches, relief valves, thermostats, control valves, and traps to ensure proper performance.
- Adjusting instrument control settings to maintain proper temperature and humidity conditions.
- Operating, monitoring, programming, and performing minor maintenance on Distributed Digital Control (DDC) systems.
- Recording and maintaining operational data related to steam, air, water, electricity consumption, temperature, humidity, and other system conditions.
- Performing routine patrols of site buildings to identify abnormal conditions involving HVAC, sanitary sewer, firewater, and service water systems.
- Performing routine inspections of sewage treatment facilities.
- Conducting water testing and maintaining water quality in boilers and heating and cooling systems.
- Maintaining written and electronic operating logs and records.
- Maintaining high standards of housekeeping and workplace safety while complying with provincial, federal, and CNL requirements.
- Attending safety meetings, reporting safety concerns, and applying Event Free Tools throughout daily activities.
- Assisting with training, coaching, and mentoring new employees on safe work practices and procedures.
- Other duties as assigned by your manager.

What we are looking for:

- Education

Grade 12 Secondary School Graduation Diploma. * Qualification as a Third Class Operating Engineer in the Province of Ontario.
- Valid Ontario Class G Driver's Licence.
- Experience

Experience operating and monitoring boilers, HVAC systems, utility systems, or industrial plant equipment. * Experience working within a regulated industrial environment with a strong focus on safety and operational reliability.




- Experience maintaining operational logs, system records, and equipment performance data.
- Knowledge, Skills & Abilities

Knowledge of applicable codes, standards, and regulations, including Ontario Regulation 219/01 - Operating Engineers. * Demonstrated commitment to the use of Personal Protective Equipment (PPE) and safe work practices.
- Knowledge of high-pressure steam boilers and associated control systems.
- Demonstrated ability to communicate effectively with multi-trade teams and stakeholders across a variety of disciplines.
- Skilled in utilizing Microsoft Office applications and computer-based systems to update procedures, maintain records, and communicate effectively.
- Demonstrated ability to identify abnormal operating conditions and take appropriate corrective actions to maintain system performance and safety.
- Security Clearance Eligibility Required

- Reliability Status with Site Access Security Clearance (SASC), which has a minimum requirement of 3-5 years of verifiable history in Canada, Australia, New Zealand, the United States and/or the United Kingdom. CNL implements security screening in accordance with the Treasury Board of Canada Secretariat's “Standard on Security Screening” and the “Policy on Government Security.”

Working Conditions:

- Working schedule: Hours vary to support 24/7 operations
- This position is part of the IUOE Union and is governed by the terms and conditions outlined in the IUOE Collective Agreement. As a member of this bargaining unit, you’ll benefit from clear expectations around hours of work, wages, vacation, and other conditions that support a fair and consistent working environment.
- Working in environments with varying noise levels and temperature conditions.
- Performing routine inspections and patrols throughout site facilities.

Why CNL?

Does the idea of working with a dynamic team across Canada to advance nuclear science and technology for a clean and secure world excite you? At CNL, we’re reinventing ourselves to be industry leaders—pioneering solutions to the problems that matter most.

From building the next generation of clean nuclear and hydrogen energy technologies,



to developing targeted cancer treatments, to continuing our global leadership in environmental remediation—we are driven by impact, innovation, and purpose.

What We Offer: A Total Rewards Package

We believe in taking care of our people. Here’s what you can expect as part of our team:

- Paid time off: vacation, sick, personal, and floater days
- Benefits effective Day One – no waiting period
- Tuition support to help you keep learning and growing
- A defined-benefit pension plan or a defined-contribution pension plan, depending on your employee group, to support your long‑term financial security

Do Our Priorities Resonate with You?
- Delivering clean energy for today and tomorrow
- Restoring and protecting the environment
- Contributing to the health of Canadians

If so, you’ll feel right at home at CNL!

Location: Onsite

Located in the heart of the Ottawa Valley, our Chalk River site offers a beautiful natural setting with forests, lakes, and wildlife, right at your doorstep. Surrounded by welcoming communities such as Deep River, Petawawa, and Pembroke, you’ll have access to unparalleled outdoor adventures and a fantastic work-life balance.

Please note: This is a fully on-site position based at our Chalk River Laboratory in Ontario.

Our Commitment to Equity, Diversity & Inclusion

At CNL, we are committed to fostering an workplace that promotes equity, diversity, and inclusion. We celebrate and welcome employees, stakeholders, and partners of all backgrounds and identities. Click here to all about it!

We are proud to uphold a workplace culture grounded in our Core Values:

- Respect
- Teamwork
- Accountability
- Safety
- Integrity
- Excellence

These values drive our employment practices and ensure meaningful career development opportunities and accommodations for all employees.

CNL is an equal chance employer. If you require accommodation during any phase of the hiring process, please let us know via . All requests will be handled with confidentiality.

CNL operates on sites located on the traditional lands, waterways and ceded and unceded territories of Indigenous peoples. CNL recognizes and affirms all First Nations, Métis communities and Inuit in this land we now know as Canada. We acknowledge, respect and seek to better understand Indigenous history, rights and title on the lands where we work and develop projects. We honour and respect the importance of the relationship between Indigenous peoples and their lands, waters and territories.

📌 Operating Engineer, Class 3 (Chalk River)
🏢 Canadian Nuclear Laboratories
📍 Chalk River