Nuclear reactor operator Jobs in Scarborough, ON

Interested in helping us transform thermal and electric energy?

Become a part of the leading Generation-IV nuclear plant development team.

Terrestrial Energy is developing, for near-term commercial operation, a zero-emissions cogeneration plant for a global industry using its proprietary Integral Molten Salt Reactor (IMSR) fission technology in an innovative, small and modular plant design. The IMSR is a non-Light Water Reactor of the Generation IV class that operates at the high temperature required for broad industrial relevance with transformative economic potential. The IMSR plant is ideally suited for distributed generation on a large-scale of electricity and heat across many energy-intensive industries. This includes but is not limited to : petrochemical and chemical plants, and data centers. The IMSR plant provides a near 50 percent improvement in efficiency of electric power generation compared to Light Water Reactor nuclear plants. Its industrial cogeneration capability delivers to today’s markets industrial competitiveness, security of energy, and zero-emissions industrial production. The IMSR plants use of existing industrial materials, components, and fuels supports its near-term deployment, setting the stage for a transformation and rapid global decarbonization of the primary energy system.

To execute this plan, we are now looking to add talented people to the team, each of whom will :

improve our team by adding diverse perspectives and innovative ways of problem solving

have demonstrated exceptional results in engineering projects

be a team player with the ability to collaborate closely and interact with other groups

be flexible and adaptable to change

have skillset and experience that relate to the following role :

The experienced Mechanical Engineering Manager, reporting to the Engineering Director, will primarily be responsible for leading our mechanical engineering function within a dynamic matrix organization. This senior leadership role will provide functional management for the Mechanical Engineering, Stress Analysis, CAD Design, and Thermal Hydraulic groups, ensuring technical excellence while supporting project delivery across multiple programs. The successful candidate will be responsible for building and maintaining a world-class engineering team capable of delivering innovative solutions for the commercialization of the Integral Molten Salt Reactor.

Key Responsibilities

You will serve as the functional leader responsible for the supervision, professional development, and technical qualification of mechanical engineering staff across multiple disciplines.

You will establish and maintain engineering standards, processes, and procedures that ensure compliance with nuclear industry codes and standards including ASME, CSA, and relevant regulatory requirements.

Your role will involve workforce planning, recruitment, and retention strategies to build organizational capability aligned with business objectives.

You will provide technical oversight and guidance to ensure engineering deliverables meet quality standards and project requirements while fostering a culture of innovation and continuous improvement.

In the matrix organization structure, you will collaborate closely with project managers and other functional leaders to allocate resources effectively, balance workload across the Engineering Department, and resolve competing priorities.

You will be accountable for the performance management of your team, including conducting regular reviews, identifying skill gaps, and creating individual development plans that support both employee growth and organizational needs. You will establish and maintain technical competency frameworks for each engineering discipline under your supervision, ensuring that staff members possess the appropriate qualifications and certifications required for nuclear engineering work.

You will serve as a technical lead within the organization, participating in design reviews, providing input on major technical decisions, and representing the mechanical engineering function in interactions with regulators, customers, and industry partners.

You will champion safety culture and ensure adherence to quality assurance protocols throughout all engineering activities.

Requirements

Education

Bachelor's degree in Mechanical Engineering or closely related engineering discipline from an accredited institution

Professional Engineering (P.Eng.) license or equivalent professional registration

Experience

Minimum 10 years of progressive engineering experience

Minimum 5 years in leadership or management capacity overseeing multidisciplinary technical teams

Substantial experience in the nuclear industry or other highly regulated sectors (pressure vessel design, power generation, or aerospace)

Demonstrated experience working within matrix organizational structures

Proven track record managing resources across multiple concurrent projects

Technical Knowledge

Strong knowledge of ASME Boiler and Pressure Vessel Code

Familiarity with ASME B31.1 and B31.3 piping codes

Understanding of CSA nuclear standards and relevant regulatory requirements

Experience with engineering analysis tools and CAD systems

Working knowledge of stress analysis and thermal hydraulic principles

Leadership & Management

Excellent leadership and people management skills

Proven ability to build high-performing teams and develop engineering talent

Strong technical communication skills with ability to explain complex concepts to diverse audiences

Experience conducting performance reviews and creating professional development plans

Cross-Functional Collaboration

Demonstrated ability to work effectively across organizational boundaries with multiple departments

Experience partnering with Research & Development teams to identify engineering data requirements, develop test specifications, and translate research and testing results into practical engineering applications

Strong collaboration skills with Safety and Licensing functions to support regulatory compliance and licensing submissions

Proven track record working with Quality Assurance organizations to maintain documentation and quality standards

Ability to interface with IT departments on engineering software implementation, data management, and digital infrastructure

Experience facilitating cross-functional design reviews and technical meetings with diverse stakeholders

Skills in managing competing priorities and resolving technical issues that span multiple departments

Assets

Advanced degree (Master's or PhD) in Mechanical Engineering, Nuclear Engineering, or related field

Direct experience within the nuclear power industry, particularly with advanced reactor technologies or molten salt systems

Strong knowledge of ASME Boiler and Pressure Vessel Code Section III Division 5

Familiarity with United States Nuclear Regulatory Commission (US NRC), United States Department of Energy (DOE), and / or Canadian Nuclear Safety Commission (CNSC) licensing processes and regulatory requirements

Experience with finite element analysis (FEA) and computational fluid dynamics (CFD)

Background in advanced simulation and modeling techniques

Previous involvement in nuclear licensing or regulatory submissions

Benefits

Extended Healthcare Plan (Medical, Disability, Dental & Vision), + an additional Health Spending Account

A vacation policy designed to support your work-life balance

EAP Programs available to you and your family

Wellness Subsidy

Annual Performance Review

Paid United Way Volunteer Days – A chance to give back!

Career development opportunities

Please include a Cover Letter in addition to your resume.

Candidates must be legally authorized to work in Canada without the need for sponsorship for employment visa status.

Terrestrial Energy requires that the successful candidate be able to access and use information subject to U.S. Export Control Laws, which mandate all citizenships (including dual citizenships) be from the U.S. Department of Energy’s List of Generally Authorized Countries. Additional information can be found at https : / / www.ecfr.gov / current / title-10 / chapter-III / part-810 / appendix-Appendix%20A%20to%20Part%20810 and https : / / www.energy.gov / nnsa / 10-cfr-part-810.

Terrestrial Energy is an Equal Opportunity Employer – Minority / Female / Disability / Gender Identity / Sexual Orientation / Age. The Company encourages applications from all qualified individuals.

If you require accommodation during the application or interview process, please advise us as soon as possible so appropriate arrangements can be made. If you require technical support in a format that is accessible to you, please contact Accessibility@terrestrialenergy.com

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