Cyber Security Specialist

Status: Regular Full Time
Working Conditions: Hybrid    
Education Level: 4 -Year University Degree in an appropriate field such as computer science plus 1 year of further concentrated study in cybersecurity programs
Base Location: Oshawa, ON
Shifts(s): Days 
Travel: 10% 
Deadline to Apply: December 23, 2025.
Salary Range: $1,704.68 - $2,924.93 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 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 Cyber Security Specialist. 

Reporting to the Section Head, Information Systems, this position is responsible to provide leadership and participate as a member of the Cybersecurity team by tracking and investigating security threats and driving remediation strategies, that includes creating reports, authoring playbooks and maintaining compliance to cybersecurity policies. Be required to keep abreast of up-to-date developments and trends in cybersecurity management information systems, networks and computer applications

KEY ACCOUNTABILITIES  

• Manage end-to-end incident response, including alert triage, investigation, containment, and remediation.
• Continuously track global threat trends, ransomware, and APTs relevant to the sector.
• Conduct vulnerability scans, penetration tests, and tabletop exercises to validate readiness.
• Operate and optimize enterprise SIEM for real-time detection, correlation, and automated response.
• Develop custom rules, playbooks, and queries aligned with MITRE ATT&CK for proactive threat hunting.
• Implement and maintain cloud security controls, endpoint protection, and Zero Trust principles.
• Configure privileged access management, enforce segmentation, and secure application access.
• Perform traffic analysis, firewall audits, and enforce CASB/DLP for SaaS and sensitive data.

QUALIFICATIONS 

• Bachelor’s in Computer Science or related field; advanced 1year cybersecurity studies preferred.
• Active CISSP, CISM, CISA, GIAC, or equivalent credentials from the same organizations.
• 6–8 years of hands-on senior enterprise cybersecurity operations.
• Advanced skills in SIEM platforms and threat detection technologies.
• Strong Azure security knowledge, including Microsoft Defender and posture management.
• Proficiency in Linux administration, PKI architecture, HSM deployment, and backend appliance support.
• Expertise in CyberArk PAM, Zero Trust architecture, and firewall policy optimization.
• Familiarity with MITRE ATT&CK, threat hunting, security automation, and architecture reviews.

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 application or interview process, please contact AODA@opg.com. 

What makes a career at OPG different?
With operations across Ontario and the United States, 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 jobs.opg.com.  OPG thanks all those who apply; however, only candidates considered for an interview will be contacted. 

#LI-Hybrid 

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.