Specialist Information Security

Date: January 22, 2026

Location: Mississauga, ON – Hybrid

Requisition ID: 20831

Status: Regular

Business Unit: Information and Technology Services

Grade/Band: MP4

Annual Pay Range: For standard 35-hour work week

The successful candidate will be placed at the appropriate step within the salary grade/band, based on relevant years of experience and other applicable considerations.

Why join us?

The IESO is committed to ensuring Ontario’s electricity system meets the province’s needs today and into the future. We are charged with purpose, delivering reliable, affordable, and sustainable electricity for homes, businesses, and communities across the province. We are energized to grow, embracing opportunities to shape the future of a dynamic and evolving energy sector while advancing our careers. We are powered by teamwork, supported by diverse and passionate colleagues who foster respect, celebrate successes, and thrive on shared achievements. At the IESO, it’s not just what we do—it’s who we are! 

Who we are

Our central role includes managing the provincial power grid in real-time, overseeing and evolving Ontario’s electricity market, engaging with government, municipalities and Indigenous communities, and planning for Ontario’s future electricity needs. Our employees play a key role in driving grid innovation, protecting the system from threats, advancing the province’s energy conservation programs, and forecasting and procuring the electricity resources we’ll need in the decades to come. 

This role is a part of…

• The Specialist, Information Security, under the direction of the Supervisor Cyber Threat Intelligence, will be part of the team responsible for IESO’s cyber threat intelligence program. They will collect data, analyze information, and report intelligence on cyber security threats actively targeting the Ontario electricity sector.  They with work with IESO’s domestic and international intelligence partners and will help maintain the technologies that support cyber threat intelligence functions.
• Information and Technology Services (ITS) - SOC

What makes this role exciting

The energy sector is rapidly evolving, offering exciting new opportunities for those who want to make a difference.

• Coordinate, plan and/or organize the development and delivery of Information Security services and contingency planning and disaster recovery to business units in order to maintain the integrity of vital computer applications and information systems across IESO and to support executives and managers in fulfilling their due diligence responsibilities regarding Information Technology Security.

What you’ll do

In this role, you’ll make a meaningful impact by contributing to the IESO team and supporting the electricity needs of the province through:

• Report the results of cyber security threat assessments with conclusions, recommendations for improvement, and planned management actions internal and external stakeholders.
• Develop and maintain the applications and technology required to deliver IESO's Cyber Threat Intelligence and Cyber Security Information Sharing services.
• Keep abreast of developments in the areas of geopolitics; cyber threats; legal, regulatory, corporate requirements; technological developments; and best practices in the Information Technology and Corporate Security field
• As required, lead projects, assign work, resolve problems and assess performance.
• Assist in the investigation pf identified security breaches, or concentrated attempts at breaching IESO security
• Will have access/handle confidentiality issues, requiring high level of trust and integrity. 

In a typical day, you will:

• Contribute to the development of cyber security and cyber threat intelligence standards and procedures consistent with corporate objectives and cyber security best practices to support cyber security programs at the IESO.
• Deliver intelligence collection frameworks to support robust processes for the collection of information and identification of threats to the Ontario electricity sector.
• Review, assess and analyze intelligence to support the IESO’s Cyber Threat Intelligence team and cyber security programs.
• Deliver and support information security technologies and programs.
• Review and update deliverables to ensure they meet the highest standards.
• Work with business units to identify opportunities for collaboration and growth of the cyber security and cyber intelligence programs.
• Collaborate internally with technology, cyber security, and other business units to support and enhance job functions.
• Perform other duties/tasks/projects as required or assigned.

Role Requirements

 
Our team consists of experts from diverse backgrounds, each bringing their unique perspectives and skills. 

To succeed in this role, you’ll need: 

Education:

• Bachelor's Degree in Computer Science, Information Technology, or a degree in an intelligence-related field (Political Science, Public Safety, Law Enforcement, etc.)
• Requires a sound knowledge of computer science, information technology and telecommunications systems.
• This knowledge is considered to be normally acquired either through the successful completion of a degree in the areas of Computer Science, Telecomunications, Cyber Security, or related discipline or equivalent.
• Certifications in the fields of Threat Intelligence, Cyber Security Incident Response, Security Operations, or related fields are beneficial.

Experience:

• Experience analyzing and reporting on Cyber Security incidents using models and frameworks such as the Cyber Kill Chain, Diamond Model, and MITRE ATT&CK.
• Excellent written and oral communication skills to present threat analysis findings to internal and external stakeholders.
• Experience coordinating/analyzing or managing enterprise security systems on a diverse set of computing platforms, operating systems and applications, especially Windows NT and UNIX.
• Experience with networking products, systems implementation.
• A period of over 5 years, up to and including 10 years is considered necessary to gain this experience.

How We Support You

From a comprehensive total rewards program to dynamic learning and development opportunities—including job rotations to broaden your expertise—we empower you to define and shape your own success. When you join the IESO, here’s what you can expect:

• Best-in-class benefits and long-term support in the form of a defined benefit pension plan. 
• Work in a dynamic and evolving sector that offers exciting opportunities and the chance to explore new career paths.
• Leadership that values meaningful discussions, welcomes feedback, and prioritizes career development. 
• A strong, inclusive culture and a collaborative team environment with a shared passion for impactful work.
• Compensation packages that are regularly reviewed to remain competitive and to best accommodate the diverse needs of our employees. 

Deadline: January 29, 2026 at 11:59PM

For future reference, please save a copy of the job posting as it will no longer be available once the posting closes.

Thank you for your interest in a career at the IESO. Only candidates selected for an interview will be contacted. Please note that the successful candidate must be legally eligible to work in Canada and will be subject to applicable background checks. 

IESO will not conduct interviews or offer positions via online, text, chat or social media platforms. We will not gather personal information directly from candidates or potential candidates. Selected candidates will work with our Talent Acquisition team to ensure their application is processed.

The IESO will be transitioning to a 3-day in-office work week effective January 2026. Over the course of 2026, the IESO will advance plans to acquire additional office space to accommodate more in-office time. While the timeline for moving to a full 5-day in-office model has not yet been established, we are committed to keeping employees and candidates informed as plans progress and give them as much advance notice as possible to prepare for any changes.

We believe in opportunities for everyone. 

At the IESO, we know that achieving great results depends on embracing diversity by attracting, developing, and retaining people from a wide variety of backgrounds. We do this by ensuring our recruitment and advancement policies are fair and equitable, and by creating an accessible and inclusive environment—one that values every team member’s unique skills and experiences and ensures they have the support they need to achieve their potential. If you require accommodation during the recruitment process, please let us know. We’re proud to say we’ve been recognized as a supportive, inclusive employer. 

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