Are you looking for a hands-on role where you can troubleshoot, repair, and keep critical equipment running smoothly? Can you see yourself working as a skilled Mechanical Maintainer/Millwright, supporting mechanical systems through maintenance, installation, and fabrication across an industrial site? Do you enjoy solving complex problems and making a real impact on operational performance and safety? If you answered yes, then this may be the job for you!

What will you be doing!

Performing routine and non-routine preventative and corrective maintenance on mechanical equipment.
Troubleshooting and repairing mechanical systems to ensure safe operation and continuity of production.
Installing, modifying, and maintaining mechanical equipment and structures across site operations.
Reading and interpreting blueprints, drawings, and work packages to ensure accurate execution of work.
Constructing, fabricating, installing, and decommissioning mechanical systems and components.
Completing documentation and maintaining accurate maintenance records and work packages.
Applying safety practices, codes, and standards to ensure compliance and a safe work environment.
Maintaining clean and organized work areas, tools, and equipment.
Participating in safety meetings and reporting hazards, incidents, and concerns.
Assisting in the training, coaching, and mentoring of apprentices and junior employees.
Other duties as assigned by your manager.

What we are looking for:

Education
- Secondary school graduation diploma and qualification as an Industrial Mechanic/Millwright (completion of an 8000-hour apprenticeship).
Experience
- Experience performing maintenance and repair work in an industrial or mechanical environment.
Knowledge, Skills & Abilities
- Ability to read and interpret blueprints and technical drawings.
- Knowledge of maintenance processes, inspection methods, and applicable codes and standards.
- Ability to use a wide range of hand tools, power tools, and precision measuring equipment.
- Strong troubleshooting and problem-solving skills related to mechanical systems.
- Ability to work effectively in multi-trade teams and communicate across disciplines.
- Knowledge of safety standards, procedures, and regulatory requirements.
- Strong attention to detail and commitment to quality workmanship.
- Ability to work independently and manage assigned tasks effectively.
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.”

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 environment that promotes equity, diversity, and inclusion. We celebrate and welcome employees, stakeholders, and partners of all backgrounds and identities. Click here to read 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 opportunity employer. If you require accommodation during any phase of the hiring process, please let us know via jobs@cnl.ca. 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.