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Welder (Contract up to 2026)


Pickering, ON, CA, L1V 2R5

Req ID:  40316

Status: Term Contract (up to 2026)

Education Level: Minimum Grade 12 Diploma and Certification of Qualification (456A) or experience defined below

Location(s): Pickering, ON

Shifts(s): Shift Work (rotating days/nights)

Travel: Some- As required within Durham Region


OPG continues to set the bar for environmental protection, community involvement and economic impact—all while safely keeping the lights on.


Now we’ve set our sights on being a net-zero carbon company by 2040 and a catalyst to help the economies where we operate achieve net-zero by 2050. 


OPG operates a diverse portfolio of generation assets including nuclear, hydroelectric, biomass and solar. We are also a clean tech leader and innovator, offering challenging and unique work opportunities. Help us use our power to change the world. 


BE THE GENERATION to help build a brighter tomorrow. 




OPG is looking for qualified candidates to join our Maintenance team in the role of Mechanical Technician. This is an exciting opportunity to work in an environment where you will contribute to Ontario Power Generation’s continued growth and success in generating safe, clean, reliable low-cost power in a sustainable manner.


In a TERM employee role at OPG, you will be supporting the Pickering Maintenance organization up until 2026. As a condition of employment, you will be required to become a member of the United Association (UA), Local 46. You will receive an attractive wage in accordance with the OPG – PWU collective agreement and a pension and benefit package through Local 46.


Following your TERM position, as a member of the UA, you will have access to long-term employment opportunities, attractive wages, benefits, and pension in accordance with the UA collective agreement while working with OPG, or one of its vendor partners, on future projects in Nuclear and Renewable Generation, including Small Modular Reactors and Pickering Safe Storage. 




A Welder permanently joins pieces of metal or manufactured parts using metal filler and heat and/or pressure; builds structures and repairs broken or cracked parts according to specifications; and carries out special processes, such as welding studs and brazing. Specifically, a Welder:

  • Lays out, cuts, and forms metals to specifications
  • Fits sub-assemblies and assemblies together and preparing assemblies for welding
  • Uses three major types of welding: arc, gas, and resistance
  • Uses various welding and cutting processes to join structural steel and cut metal in vessels, piping and other components
  • Fabricates parts, tools, machines and equipment
  • Joins parts being manufactured, builds structures and repairs damaged or worn parts
  • Controls for quality before, during and after welding.



  • Have a minimum Grade 12 education




  • Hold a valid Certificate of Qualification (456A) or have 5+ years’ experience Pipe/welding with GTAW process on stainless steel & carbon steel;
  • Must be able to pass a 6G open root pipe test using the GTAW & SMAW processes (F6-F4).  The test specimen will then be subjected to NDE examination (non-destructive evaluation) consisting of visual, radiographic and destructive inspections for evaluation;
  • 5+ years’ experience, transferable CWB;
  • Successfully pass all formal examinations during the initial training period including Radiation Protection;
  • Be prepared to work a rotating 12-hour shift, including weekend and holidays;
  • Have exceptional problem solving abilities;
  • Possess strong communication and interpersonal skills;
  • Have a high comfort level with computers;
  • If applicable, have Canadian equivalency of foreign education; and
  • Be eligible to work in Canada.




As Ontario’s largest clean energy generator, OPG offers an exciting combination of challenging opportunities and career diversity in a fast-paced work environment. Being an OPG employee means you can apply your knowledge, broaden your skills and make a valuable contribution to an organization that is vital to the province’s wellbeing.  


At OPG, our values are our strengths.  They are fundamental truths about our organization that don’t change.  Safety. Integrity. Excellence. People and Citizenship.   


Here's why OPG might just be the ideal workplace for you: 

  • Exceptional range of opportunities province-wide 
  • Long-term career growth and development opportunities 
  • Electricity is vital to the province and OPG’s clean electricity is helping decarbonize other sectors. 


If you are looking to learn from others and be part of something important, and you are excited about the future of power generation, you will find the right fit at OPG. 


Our promise to you: 

  • We care about the safety and the well-being of our employees. It is our utmost priority. 
  • A supportive work environment where you can be your best every day. 
  • Opportunities to stretch and develop. 
  • Offer different ways for you to give back to communities where we operate. 
  • Partner with Indigenous communities and support local businesses. 
  • We support employment equity, diversity and inclusion. 
  • We care about the safety and the well-being of our employees.  It is our utmost priority.  



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



OPG is committed to fostering an inclusive, equitable, and accessible environment where all employees feel valued, respected, and supported. 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 information in a format that is accessible to you, please contact