Senior Technical Engineer/Officer - Mechanical Engineering

Posting End Date: 21/10/2026

Status: Regular

Number of Openings: 1

Education Level: Bachelors or Masters in Mechanical Engineering

Base Location: 1908 Colonel Sam Drive, Oshawa, Ontario L1H 8W8

Shift: Days

Travel Required: 10%

Salary Range: $1,664.34 - $2,622.59 per week

Electrify your career and help build a brighter tomorrow.

Every generation has a challenge that defines them. At OPG, we are calling on all innovators, disruptors, thought leaders and change-makers. Join us as we work to electrify life in one generation and build a sustainable future powered by our electricity, our ideas, and our people. Join OPG and make history.

Whether you work in the skilled trades or are a business professional, a career at OPG is an opportunity to electrify your life on -- and off -- the job.

Ontario Power Generation (OPG) is looking for a dynamic, strategic and results-driven professional to join our team in the role of Senior Technical Engineer/Officer - Mechanical Engineering.

Job Overview

Ontario Power Generation (OPG) is looking for a dynamic, strategic and results-driven professional to join our team in the role of Senior Engineer / Technical Officer - Mechanical Engineering.

Reporting to the Manager, DNNP Owners Engineering, this position is responsible for the following.

Key Accountabilities

• Serve as the System Responsible Engineer for the turbine-generator and associated auxiliary systems through design, procurement, construction, commissioning, turnover, and early operation of the BWRX-300 plant.
• Provide technical oversight of steam turbine, generator, excitation, lubrication and seal-oil, gland sealing, moisture separation and reheating, condenser, vacuum, and related balance-of-plant interfaces.
• Review and accept vendor calculations, specifications, drawings, equipment data, control philosophies, operating transients, and performance guarantees for compliance with project requirements, applicable codes and standards, and plant design basis.
• Manage mechanical, electrical, instrumentation and control, civil, piping, and plant-system interfaces affecting turbine-generator performance, operability, maintainability, and reliability.
• Apply power-plant turbine-generator experience to evaluate rotor dynamics, vibration, alignment, thermal expansion, overspeed protection, synchronization, load rejection, generator cooling, and condition-monitoring requirements.
• Support equipment manufacturing surveillance, constructability reviews, installation, preservation, inspection, and resolution of field changes, non-conformances, and technical queries.
• Develop and review commissioning plans and test procedures, and provide technical leadership during flushing, rolling, synchronization, loading, overspeed, vibration, and performance testing.
• Lead troubleshooting and root-cause evaluations for turbine-generator issues, assess equipment health and operational risk, and recommend corrective actions that improve availability and equipment life.
• Collaborate within the Integrated Project Delivery model and act as the technical liaison among project execution, Owner’s Engineering, suppliers, construction, commissioning, operations, and maintenance teams.
• Maintain system design, configuration, requirements, equipment, test, and turnover records using project information-management tools and models.

Qualifications

• Bachelor’s degree in Mechanical Engineering from an accredited university; a master’s degree in Mechanical Engineering, Power Engineering, or a related discipline is considered an asset.
• Minimum of 8 years of progressive engineering experience in power generation, including direct experience with large steam turbine-generators and associated auxiliary systems in nuclear, thermal, or combined-cycle power plants.
• Must be a fully licensed Professional Engineer in the Province of Ontario, or be eligible to obtain licensure in Ontario.
• Demonstrated knowledge of steam turbines, generators, excitation, lubrication and seal-oil systems, gland sealing, condenser and vacuum systems, moisture separation and reheating, and turbine-generator control and protection systems.
• Experience reviewing vendor calculations, specifications, drawings, operating and control philosophies, performance guarantees, and equipment testing documentation against project requirements and applicable codes and standards.
• Practical experience with turbine-generator design, installation, alignment, commissioning, synchronization, loading, vibration monitoring, overspeed testing, performance testing, troubleshooting, and root-cause analysis.
• Working knowledge of relevant industry requirements, standards and guidance, including ASME, API, IEEE, CSA.
• Strong technical leadership, written and verbal communication, problem-solving, and decision-making skills, with the ability to coordinate effectively across engineering, suppliers, construction, commissioning, operations, and maintenance teams.
• Ability to work on site and travel as required to supplier facilities.

The successful candidate will exhibit uncompromising integrity and commitment to upholding corporate values, and the OPG Code of Business Conduct.

OPG is committed to fostering an inclusive, equitable, and accessible environment. If you require accommodation during the selection process, please contact AODA@opg.com.

What makes a career at OPG different?

With operations across Ontario, OPG is one of the most diverse power producers in North America. As the largest generator in Ontario, we meet approximately 50% of the province’s electricity needs, largely from low-carbon sources like nuclear and hydro.

As we work to achieve our vision of Electrifying life in one generation, OPG and our family of companies are also helping advance the development of new low-carbon technologies such as Small Modular Reactors (SMRs), refurbishment projects, and electrification initiatives to help power the growing demands of a growing economy. Join OPG and make history.

The Darlington New Nuclear Project is leading the way in the advancement of Small Modular Reactor (SMR) technology in Canada – the future of nuclear power generation! Using new and innovative technologies such as small modular reactors, hydrogen and battery storage, while expanding our hydroelectric and nuclear portfolios, we are changing the electricity landscape in Ontario.

Important Information

The base salary range considers many factors including, but not limited to experience, education, and training, including any collective agreement requirements for union represented positions. It is not typical for the salary to be offered near the top of the range, and salary is dependent on numerous factors. For management roles, the base salary range does not represent the total compensation package. The total compensation package for regular full-time management roles includes pay-for-performance programs for annual and medium time periods. Maintaining a high-performance culture and excellence is a core expectation of every member of our leadership team and is rewarded through the established compensation framework.

OPG is committed to employment equity. As such, we encourage applicants from equity-seeking communities (Indigenous Peoples, racialized persons, persons with disabilities, and women). We strongly believe that alleviating the under-representation of equity-seeking individuals will create a stronger OPG team and allow us to better serve the needs of our diverse communities.

In order to fulfill the above-mentioned purpose, priority in hiring may be given to qualified persons who self-identify as a member of equity-seeking groups as identified in the application process. This initiative constitutes a special program under the Human Rights Code/Canadian Human Rights Act.

All job postings at OPG are to fill existing vacancies within our organization.

OPG may use artificial intelligence (AI) tools as part of the applicant screening process. However, applications will also be reviewed by a member of our Recruitment team to ensure a fair and thorough assessment.

Please submit your application online at https://jobs.opg.com/. OPG thanks all those who apply; however, only candidates considered for an interview will be contacted.