Mechanical Maintainer Millwright

Are you looking for a hands-on role that will challenge your mechanical skills and keep critical industrial equipment running safely and efficiently? Can you see yourself troubleshooting, repairing, fabricating, and installing mechanical systems and structures to support day‑to‑day operations across the site? Do you want to make a direct impact by ensuring customer commitments are met while working in a safety‑focused environment? 

If you answered yes, then this may be the job for you—apply today! Are you looking for a hands-on role that will challenge your mechanical skills and keep critical industrial equipment running safely and efficiently? Can you see yourself troubleshooting, repairing, fabricating, and installing mechanical systems and structures to support day‑to‑day operations across the site? Do you want to make a direct impact by ensuring customer commitments are met while working in a strong safety‑focused environment? If you answered yes, then this Mechanical Maintainer Millwright role may be the job for you—apply today!

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What will you be doing!

• Performing routine and non‑routine preventive and corrective maintenance to ensure the safe and reliable operation of CNL mechanical equipment, including pumps, compressors, precision machining equipment, gearboxes, and hydraulic units.
• Troubleshooting mechanical equipment to maintain safe operation and continuity of production.
• Reading and interpreting drawings, work packages, and reference materials to fully understand job scope and ensure compliance with Atomic Energy of Canada Ltd (AECL) regulations and applicable codes.
• Documenting maintenance activities and completing comprehensive work packages (e.g., Avantis job cards) to maintain accurate maintenance history for review and audit purposes.
• Constructing, fabricating, installing, modifying, and decommissioning mechanical systems and structures in support of R&D programs and decommissioning activities.
• Maintaining strong housekeeping practices for work areas, tools, and equipment in accordance with provincial, federal, and AECL safety requirements.
• Attending safety meetings, applying Event Free Tools and pre‑job brief requirements, and immediately reporting safety concerns, incidents, and near misses.
• Communicating effectively with customers, co‑workers, contractors, and stakeholders to ensure customer requirements are met and teamwork is maintained.
• Collaborating with other departments and maintaining professionalism while demonstrating a questioning and safety‑focused attitude.
• Assisting with the training, coaching, and mentoring of apprentices and co‑op students by demonstrating safe work practices, monitoring performance, and identifying development needs.
• Participating in and maintaining all required safety and operational training, while taking personal responsibility for keeping skills current.
• Sharing knowledge and learned skills with peers to support continuous improvement.
• Identifying and reporting actual or potential safety hazards and adhering to all workplace safety, WHMIS, and health procedures.
• Other duties as assigned by your manager.
   

What we are looking for: 

• Education 
  • High school graduate or equivalent.
  • Must have completed apprenticeship training or equivalent and be qualified as a Millwright with an Interprovincial Red Seal ticket.
• Experience 
  • Must have 3 years’ experience as a Red Seal Millwright.
  • Experience in a wide variety of industrial work environments.
• Knowledge, Skills & Abilities
  • Ability to read blueprints and technical drawings specific to Millwrights in order to have a thorough understanding of the scope of the job in question.
  • Ability to use a wide range of hand and power tools, as well as precision measuring and levelling equipment.
  • Written and verbal communication to be able to work in multi-trade groups and communicate with CNL staff across a broad range of disciplines.
  • Motivated with the ability to work with minimal supervision.
  • Problem-solving abilities to change installation techniques to on-site working conditions.
  • Ability to operate a variety of hand and power tools, as well as the ability to determine the most appropriate means of proceeding with the work.
  • Mechanical ability to troubleshoot and repair equipment.
  • Ability to determine how equipment operates by looking at a diagram or blueprint.
  • Good comprehension skills to interpret drawings and code specifications.
  • Ability to provide material take-offs and labour estimates.
  • Ability to read and interpret engineering drawings and weld according to the engineering specifications as outlined.
  • Planning and organizational skills.
  • Ability to adapt to a changing environment and respond with initiative.
  • Punctual, dependable and safety-minded.
  • Detail-oriented with the ability to meet deadlines.
  • Exceptional organizational skills, able to prioritize and time management is required.
  • The ability to understand detailed information is essential.
  • Knowledge of internal structural check lists, maintenance records, inspection processes, as well as being familiar with all applicable codes and standards such as CSA 47.1/W59, CSA N285, Z-299 Quality
  • Assurance levels and Underwriter’s Laboratory codes, in order to provide a safe and healthy work environment. 
  • Knowledge of metallurgy and the effectiveness of the equipment being used.
• 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: We have a compressed work week: Four (4) days per week, ten (10) hours per day for a forty (40) hour work week, starting at 6:00 a.m. to 4:30 p.m. 
• This position is part of the Machinists and Aerospace (IAM) Union and is governed by the terms and conditions outlined in their 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.

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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.

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Location: Onsite
Located near Pinawa, Manitoba, our Whiteshell site is surrounded by pristine lakes, rivers, and forests — a true haven for outdoor enthusiasts. The area offers a peaceful, close-knit community atmosphere, ideal for those who enjoy nature, recreation, and a balanced lifestyle. 

Please note: This is a fully onsite position based at our Whiteshell site, Manitoba.

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 [email protected]. All requests will be handled with confidentiality.

Whiteshell Laboratories is situated on the traditional lands of Treaties 1 and 3, and near Treaty 5. This land is the home of the Anicinabe, Ojibway Anishinaabe and the National Homeland of the Red River Métis. We recognize that many other Indigenous Peoples across the region and Canada also consider this area their home. CNL is deeply grateful for the opportunity to work on these lands and waterways, which hold significant cultural and historical importance. We acknowledge that this site was established without consultation with the Indigenous Peoples of this area. We recognize the ongoing impact of this and we are committed to understanding and respecting the unique Indigenous history, rights and title associated with this land.

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