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Confirmed on the employer's own hiring board on Nov 6, 2026. First seen by Alion on Aug 18, 2026. Canadian Nuclear Laboratories scores B on the Alion truth index.

Overview
Company
Impact
Profile match
We invite you to learn more about the clean energy, environmental protection, and health sciences work of CNL, Canada's premier nuclear science organization.

Are you looking for a role that will challenge you? Can you see yourself leading the design and development of innovative equipment and tooling for low-access, high-radiation environments while guiding projects from concept through to field deployment? If you do, as part of a multidisciplinary team, you will apply your engineering expertise to solve complex technical challenges, support customers, and mentor fellow engineers and technical staff. If this sounds like the opportunity you've been looking for, apply to ourMechanical Engineer role today!

What will you be doing!

  • Working as part of a team to design moderately complex mechanical equipment, tooling, and components to meet customer commitments.
  • Developing design requirements and defining critical characteristics using engineering judgement, industry best practices, codes and standards, and input from subject matter experts.
  • Gathering information on existing codes, standards, and bought-out items.
  • Reviewing engineering drawings, calculating clearances and fits, and tolerance stack-up.
  • Taking engineering responsibility for drawings, other engineering documents, and the work of those supervised.
  • Leading or participating in team meetings and design reviews.
  • Generating design ideas based on experience, input from other subject matter experts, and owning an area of expertise.
  • Preparing design documents for complex, multi-discipline designs.
  • Preparing test plans, reports, and record sheets to demonstrate compliance with design requirements.
  • Guiding the work of Mechanical Laboratory Technicians and other Mechanical Engineers in test execution.
  • Other duties as assigned by your manager.

What we are looking for:

  • Education
    • At a minimum, a Bachelor's (Honours) in Mechanical Engineering from a university of recognized standing, or membership in an engineering professional organization authorized by statute to establish qualifications for membership in that organization, is required.
    • An advanced degree in engineering (MASc or PhD) is considered an asset.
  • Experience
    • Four to eight (4-8) years of mechanical engineering job experience and is a Professional Engineer in the province of Ontario or eligible for licensure in Ontario.
    • Experience in solving and understanding design problems which push the boundaries of traditional mechanical engineering is an asset and must be comfortable thriving at the edge of their understanding while simultaneously working to expand their knowledge.
  • Knowledge, Skills & Abilities
    • Ability and desire to innovate.
    • Ability to learn, adapt, and pivot as new information is discovered or becomes available.
    • Demonstrated expertise in a specific area or field of study related to design and development or a broad scientific and engineering background.
    • Ability to evaluate the fitness of a component to meet design intent through the application of solid mechanics, heat transfer, fluid dynamics, etc.
    • Ability to read, understand, and take professional responsibility for engineering drawings.
    • Ability to lead small multi-discipline teams or sub-teams to meet prescribed outcomes.
    • Excellent written and verbal communication skills.
    • General computer literacy in word processing and a high degree of expertise with spreadsheet software.
    • Knowledge of technologies beyond traditional mechanical design, such as robotics, automation, and remote tooling, would be an asset.
  • Security Clearance Eligibility Required
    • Reliability Status with Site Access Security Clearance (SASC), which hasa 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: Five (5) days per week, seven and a half (7.5) hours per day for a thirty-seven and a half (37.5) hour work week.
  • This position is part of the CRPEG 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.
  • Low physical demands, some periodic and minor exposure to loud noises, chemicals, metals, sharp objects, heights, confined spaces, radiological hazards, stationary machinery, vehicles.
  • Work is conducted primarily in an office and prototyping machine shop environment. On occasion, travel to off-site locations is required.
  • From time to time, work may have to be performed in the field, including in inclement weather and in radiologically controlled areas.

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: Fully Onsite

This role is a fully onsite role that requires the employee to primarily work at CNL’s Chalk River Laboratory site, with only occasional opportunities to work remotely, if desired by the employee. 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 [email protected]. 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.

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