Ontario Entry level nuclear Jobs – 25 Openings This Week

Nuclear Security Officer
Ontario Power Generation —Pickering, ON
- $33.09–$54.49 an hour
- Weekends as needed
- CPR Certification
- Bachelor's
- First Aid Certification
19h
CNC Machinist/Programmer
Kuhl Machine Shop Ltd —Chatsworth, ON
- $50,000–$80,000 a year
- Full-time
- Heavy lifting
- Forklift
- High school diploma or GED
- Disability insurance
- Dental care
Quick apply
Document Control Administrator (Contract Support)
Canadian Nuclear Laboratories —Port Hope, ON
- Full-time
- Microsoft Word
- Microsoft Excel
- Microsoft Outlook
- Paid time off
9d
Assistant Editor - Physical Sciences
MDPI Canada —Toronto, ON
- $54,000–$60,000 a year
- Full-time
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
Customer Service Representative
Arrow Machine and Fabrication Group —Guelph, ON
- $52,000–$70,500 a year
- Microsoft Word
- Microsoft Excel
- Microsoft Outlook
- Profit sharing
- Dental care
Quick apply
Structural Engineer 1 - Nuclear
Sargent & Lundy —North York, ON
- $50,215–$72,205 a year
- Full-time
- Hybrid work
- Civil engineering
- Microsoft Excel
- Computer Science
- Paid time off
Projects Administrator
Curtiss-Wright —Brantford, ON
- $70,000–$90,000 a year
- Full-time
- Microsoft Word
- Microsoft Excel
- Microsoft Office
- Employee stock purchase plan
- Paid time off
Electrician 309A (Electrical Technician)
AtkinsRéalis —Mississauga, ON
- $45–$60 an hour
- Full-time
- Hybrid work
- Heavy lifting
- Schematics
Academic Program Coordinator (ENG-iLEAD)
McMaster University —Hamilton, ON
- $31.91–$44.92 an hour
- Part-time
- Hybrid work
- Microsoft Powerpoint
- Microsoft Excel
- Microsoft Outlook
14d
CNC Machinist
Westinghouse Electric Company —Peterborough, ON
- $56,500–$70,500 a year
- Dental care
- Tuition reimbursement
Quality Coordinator
Applus+ —Burlington, ON
- Overtime
- Databases
- Administrative experience
- Travel
Collections Management Project Contractor
Diefenbunker: Canada's Cold War Museum —Ottawa, ON
- $21 an hour
- Full-time
- Databases
- In-person
- Business
- Flexible schedule
Quick apply
8d
Project Engineer Project Engineer Engineering Bowmanville, ON, CA +1 more… May 16, 2026
Aecon Group —Bowmanville, ON
- $110,000–$150,000 a year
- Contracts
- Construction
Project Controls Specialist
AtkinsRéalis —Mississauga, ON
- Full-time
- Hybrid work
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
Intermediate Accountant Intermediate Accountant Finance Toronto, ON, CA May 14, 2026
Aecon Group —Toronto, ON
- $60,000–$75,000 a year
- Microsoft Excel
- Microsoft Office
- Finance
- Tuition reimbursement
Strategic Finance & Investor Relations (Analyst / Associate)
CSMC —Toronto, ON
- Full-time
- Finance
Quick apply
Site Lead
MyHealth Partners Inc. —Pickering, ON
- Day shift
- CPR Certification
- Relocation assistance
- Dental care
Quick apply
Corporate Development Analyst
CSMC —Toronto, ON
- Full-time
- Engineering
- Finance
- Analysis skills
Quick apply
2d
Senior Accounting & Reporting Analyst
Canadian Nuclear Laboratories —Ottawa, ON
- Full-time
- Remote
- Microsoft Excel
- Oracle
- ERP systems
- Paid time off

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Nuclear Security Officer
Ontario Power Generation —Pickering, ON
Valid G-Class Ontario driver's licence. Monitor, control, and document entry/exit of personnel and vehicles; conduct searches for weapons, contraband, and…
$33.09–$54.49 an hour
19h
Document Control Administrator (Contract Support)
Canadian Nuclear Laboratories —Port Hope, ON
Reviewing and validating incoming information to confirm alignment with CNL requirements before distributing to project staff and stakeholders.
9d

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entry level nuclear jobs near ontario

Nuclear Security Officer

Ontario Power Generation -
Pickering, ON

Apply Now

Job details

Full-time
$33.09–$54.49 an hour
19 hours ago

Qualifications

CPR Certification
Law
Bachelor's
First Aid Certification
College diploma

Full job description

Location: Pickering, ON, CA, L1V 2R5

Req ID: 56821

Status: Permanent Full Time

Working Conditions: On-site

Education Level: College Diploma or University Degree in Police Foundations, Law & Security Administration, or Criminology

Base Location: Pickering, ON

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

Travel: 10%

Deadline to Apply: June 18, 2026

Salary Range: $33.09 - $54.49 Per Hour

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.

JOB OVERVIEW

Ontario Power Generation (OPG) is looking for a dynamic, strategic and results-driven professional to join our team in the role of Armed Nuclear Security Officer.

Reporting to the Security First Line Manager, this position is responsible to carry out assigned duties of a Nuclear Security Officer (NSO) or a tactically trained Nuclear Security Officer at a Nuclear Generating Station (ANSO). This includes, but is not limited to, access controls, foot and mobile patrols, searches, enquiries and incident investigations, monitoring and lock and key control activities.

KEY ACCOUNTABILITIES

Carry out duties as a Nuclear Security Officer, including patrols, access control, and enforcement of security regulations and procedures.
Monitor, control, and document entry/exit of personnel and vehicles; conduct searches for weapons, contraband, and nuclear material.
Respond to alarms, emergencies, and incidents; conduct investigations, gather evidence, prepare reports, and support law enforcement as required.
Use and maintain security monitoring equipment, firearms, less-lethal options, and communication tools in compliance with regulations and policies.
Issue and manage radiation dosimetry badges; monitor and support radiation safety protocols for personnel, vehicles, and materials.
Participate in emergency drills, exercises, and mandatory training; maintain qualifications and fitness for duty.
Administer lock and key control, access card programs, and ID processing for personnel and site security.
Provide training to new officers, assist visitors and staff, operate communications systems, and uphold health, safety, and well-being standards for self and others.

QUALIFICATIONS

College Diploma or University Degree in Police Foundations, Law & Security Administration, Criminology.
2 years of working experience in an enforcement, statutory compliance, military, emergency management field or comparable security environment is considered an asset.
Qualifications normally acquired during successful continuous experience in enforcement, statutory compliance, military, emergency management field or comparable security environment are considered an asset.
Valid G-Class Ontario driver's licence.
Valid Standard First Aid and CPR-C certificates. (Please attach a copy with your application)
Valid Firearms Possession and Acquisition Licence (PAL). (Please attach a copy with your application)
Have the ability to successfully complete a comprehensive Nuclear Security Officer Training Course, successfully pass fitness, psychological, and medical testing, and obtain a Level II Security Clearance.

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 [email protected]

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.

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.

#LI-Onsite

Please note: 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.

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.

Apply Now

Refine Your Search

entry level nuclear jobs in ontario

Nuclear Security Officer

CNC Machinist/Programmer

Document Control Administrator (Contract Support)

Assistant Editor - Physical Sciences

Customer Service Representative

Structural Engineer 1 - Nuclear

Projects Administrator

Electrician 309A (Electrical Technician)

Academic Program Coordinator (ENG-iLEAD)

CNC Machinist

Quality Coordinator

Collections Management Project Contractor

Project Engineer Project Engineer Engineering Bowmanville, ON, CA +1 more… May 16, 2026

Project Controls Specialist

Intermediate Accountant Intermediate Accountant Finance Toronto, ON, CA May 14, 2026

Strategic Finance & Investor Relations (Analyst / Associate)

Site Lead

Corporate Development Analyst

Senior Accounting & Reporting Analyst

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