Mechanical Engineer, Senior, Nuclear

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Mechanical Engineer, Senior, Nuclear

Date: Aug 7, 2026

Company: Hatch

Requisition ID:101225

Job Category: Energy

Join a company that is passionately committed to the pursuit of a better world through positive change. With more than 70 years of business and technical expertise in mining , energy , and infrastructure ,our 10,000 colleagues in 150 countries tirelessly work toward bettering the industries in which we operate. With practical solutions that are safe, innovative and sustainable, we think globally while acting locally.Are you looking for an opportunity to join a diverse group of professionals who are committed to remaining exceptional? We look forward to hearing from you.

Our energy expertise in the oil and gas sector comprises the entire value chain - upstream, midstream, and downstream; and in the power sector includes thermal, nuclear, waterpower, renewable, hybrid, transmission and distribution, and grid modernization. Join our vision of a low-carbon world and help make positive change!

Are you looking to take the next step in your career? Hatch is currently seeking a highly motivated Senior Mechanical Engineer- Nuclear to join our team in Mississauga.

The global energy transition is upon us. As we shift to a low carbon world, meeting the growing demand for energy will require revolutionary thinking and a variety of resources. While the market is challenging, these challenges present the biggest opportunities, and catalysts for change.

In the nuclear sector, we’re busier than ever. We believe in the power of this carbon-free power source in our fight to tackle climate change. Our teams are supporting the nuclear power renaissance with projects supporting existing plants, small and advanced modular reactor designs, nuclear sustainability for waste processing and volume reduction, long-term storage, and fusion energy development – to name just a few.

You will be a part of our growing nuclear team where we ensure world-class project delivery through the skills of our people, methodologies, governance, and systems. Responsibilities will include, but not be limited to:

• Prepare engineering work packages ensuring budgets and schedules are met
• Define mechanical project requirements as they are related to scope, cost and schedule
• Develop and/or review mechanical deliverables such as design requirements, design criteria, engineering calculations and systems analysis, technical specifications, design criteria, datasheets, layouts, and more
• Prepare design completion assurance certificates, analysis statements and engineering reports for registration and fitness of service assessments
• Support classification of nuclear and non-nuclear code boundaries
• Seal documentation required with regulatory bodies for registration of systems such as Canadian Registration Numbers (CRN)
• Assist with technical queries raised during construction and commissioning of projects
• Willingness to mentor junior and intermediate staff
• Interface with other engineering disciplines including participation in design reviews
• Participate in HAZOP, COMS and other safety related reviews as required
• Actively manage relationships with clients and vendors
• Provide input to engineering, operating and capital cost estimates

You bring to the role:

• B.Sc/B.Eng in mechanical engineering
• Registration as a professional engineer in Ontario, or eligible to obtain
• Valid security clearance for Canada, or the ability to obtain
• Minimum 10 years’ experience in project engineering specific to mechanical design
• Experience in leading mechanical teams in multidisciplinary nuclear projects
• Experience working inside a nuclear quality management system compliant with CSA N286, NQA-1, and/or ISO 19443
• Familiar with CSA N285, ASME Section III Boiler and Pressure Vessel Code, ASME B31.1 Power Piping, and B31.3 Process Piping
• Excellent communication and interpersonal skills
• Excellent planning and organizational skills
• Ability to function with minimum supervision
• Experience in client engagement as a mechanical lead in nuclear projects
• Familiar with engineering management lead in nuclear projects
• Experience working in the Canadian nuclear industry with clients such as Ontario Power Generation, Bruce Power and Canadian Nuclear Laboratories
• Experience with engineering change control (ECC) processes within the Canadian nuclear industry including CANDU station configuration management systems
• Preference for those with DTL or DE qualifications at Canadian nuclear facilities
• Eligible to work on export-controlled projects subject to 10 CFR 810

Base salary range: $131,000 - $181,000

At Hatch, we are committed to fair and equitable compensation practices. In accordance with legislated pay transparency requirements, the expected salary range for this position is based on current market data and aligned with internal pay structures to ensure consistency and fairness.

Your individual compensation within this range will depend on factors such as skills, experience, qualifications and location. In addition to base pay, our total rewards package may include performance-based incentives, comprehensive benefits, and other programs designed to support your well-being and growth.

• Collaborate on exciting projects to develop innovative solutions

We're committed to fostering a workforce that reflects the diversity of the communities in which we operate and serve. Hatch is an Equal Opportunity Employer that considers applicants without regard to age, race, color, national origin, citizenship, religion, creed, gender, sexual orientation, marital status, disability, veteran, or any other protected status. If you have any accommodation requirements, please let us know. We'll do our best to meet your needs in accordance with applicable local legislation.

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