Welder apprentice Jobs in Whitby, ON

Posting End Date: 21/10/2026

Status: Regular

Number of Openings: 6

Education Level: Successful completion of a 2-or 3-year College Program in Mechanical Engineering Technician/Technologist, Mechanical Technician/Technologist or Industrial Mechanic Millwright

Base Location: Bowmanville or Pickering

Shift: Days and/or rotating shifts including nights, weekends and holidays

Travel Required: 10%

Salary Range: $33.09 - $54.49

*The salary range listed reflects the full compensation band for this position. For apprentice hires, the starting rate is typically $39.90 or above.

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 Industrial Millwright Apprentice.

Job Overview

Ontario Power Generation (OPG) is looking for a motivated and hands-on individual to join our team as an Industrial Millwright Apprentice.

This position involves working alongside experienced tradespeople to learn how to inspect, maintain, repair, and install industrial mechanical equipment. This role provides practical experience with machinery, tools, and maintenance activities in a safe sustainable environment.

You will gain exposure to mechanical, pneumatic, hydraulic, lubrication, cooling, and exhaust systems, as well as work with pumps, fans, tanks, conveyors, presses, generators, and both pneumatic and hydraulic controls.

Key Accountabilities

• Assist experienced Mechanical Technicians and Millwrights with maintenance, repair, installation, and inspection activities.
• Safely use machine tools, including lathes and milling machines, as well as fabrication tools such as welders, presses, power threaders, and punches.
• Use and maintain basic hand tools, power tools, and precision measuring equipment under guidance.
• Support alignment, measurement, and inspection work using tools such as dial indicators, micrometers, precision levels, and laser alignment equipment.
• Assist with preventive and predictive maintenance activities, including basic equipment inspections and vibration-monitoring tasks.
• Help install, maintain, and service compressed-air, water, and exhaust ducting systems.
• Support maintenance work on equipment such as robotics, pumps, presses, compressors, turbines, material-handling systems, gearboxes, and other industrial machinery.
• Follow established safety procedures, work instructions, and take direction and learn from qualified tradespeople and supervisors.

Qualifications

• Successful completion of a 2-or 3-year College Program in Mechanical Engineering Technician/Technologist, Mechanical Technician/Technologist or Industrial Mechanic Millwright (proof of completion must be included in application)
• Have a minimum average of 70% cumulative GPA (transcript must be included in application)
• Work experience in the Nuclear industry (i.e. Skilled Trades Co-op) would be an asset

*OPG will sponsor successful candidates for registration with Skilled Trades Ontario (STO) as an Industrial Millwright (433A) Apprentice.*

** Note that candidates who are selected to proceed in the recruitment process will be required to complete online aptitude testing. **

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.