Specialist Information Security (Risk Assessment & Architecture)

Date November 24 2025

Location Mississauga ON Hybrid

Requisition ID 20369

StatusRegular

Business UnitInformation and Technology Services

Why join us

The IESO is committed to ensuring Ontarios electricity system meets the provinces 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 its not just what we doits who we are!

Who we are

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

This role is a part of

• The Specialist Information Security under the direction of the Supervisor Security Architecture and Risk will be part of the team responsible for IESOs information security architecture threat and risk assessment and vulnerability management programs.
• They will participate with project teams as an InfoSec subject matter expert throughout the project lifecycle.
• Working with various IESO teams they will collect data analyze information and conduct threat and risk assessment reports on projects IT procurements and vendor risk assessments.
• Information and Technology Services - unionized

What makes this role exciting

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

• This opportunity allows the Specialist Information Secuiity to facilitate secured growth of the IESO through the guidance and implementation of security best practices security architecture reviews and security technologies. This role will require a high degree of autonomy and consensus building amongst a cross functional team of individuals and lines of business. Experience in implementing and hardening DLP BYOD/MobileAV Office 365 & Email Security (DMARC DKIM SPF) solutions and familiarity with security architecture concepts is an asset. Ideally knowledge of IAM governance is also an asset but not required.

What youll do

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

• Contribute to the development of Information Security standards and procedures for business units consistent with corporate security objectives and generally accepted and leading edge Information Security practices and professional security standards and in coordination with IT Process Development Leaders and the Information Security Manager.
• Support the delivery of the Information Security Operations and Technology programs for applications tools anti-virus encryption and fire walls implementation support identification of system vulnerabilities system assessments Information Security advice and consultation business resumption planning and disaster recovery planning.
• Deliver or conduct the delivery of Information Security and contingency planning and disaster recovery programs for business units/departments across IESO.
• Contribute to the development of Information Security standards and procedures for business units consistent with corporate security objectives and generally accepted and leading edge Information Security practices and professional security standards and in coordination with IT Process Development Leaders and the Information Security Manager.
• Deliver the Information Security programs including Information Security framework for applications tools anti-virus encryption and fire walls implementation support identification of system vulnerabilities system assessments Information Security advice and consultation business resumption planning and disaster recovery planning.
• Review and assess all requests for Exception and/or Exemption to policy.
• Provide input to supervision on all areas of Information Security.
• Contribute to the development/delivery of awareness training and general Information Security education.
• Investigate all identified security breaches or concentrated attempts at breaching IESO security.
• Report the results of Technical Information Security assessments with conclusions recommendations for improvement planned management actions follow-up status to Supervisor/Management Team.
• As required will lead projects assign work resolve problems and assess performance.
• Review new and updated systems/applications to ensure that security is configured properly.
• Work with business units to determine data classification and ownership/custodianship.
• Ensure there are adequate security tools available for performing system reviews.

In a typical day you will

• Report the results of technical IT Security assessments with conclusions recommendations for improvement planned management actions follow-up status to Manager - Information Security and business leaders.
• Keep abreast of developments in the areas of legal regulatory corporate requirements technological developments and best practices in the Information Technology and Corporate Security field.
• Will have access/handle confidentiality issues requiring high level of trust and integrity.
• 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 youll need:

Education:

• Requires a sound knowledge of computer science information technology and telecommunications systems.
• Excellent written and oral communication skills in order to deal with end-users review/input on procedures standards and/or methods; and design/deliver training.
• This knowledge is considered to be normally acquired either through the successful completion of a university degree in the area of Computer Science or related discipline or equivalent.

Experience:

• Experience in conducting threat and risk assessments.
• Requires experience coordinating/analyzing enterprise security systems on a diverse set of computing platforms operating systems and applications especially Windows NT and UNIX.
• Experience with networking products large package and systems implementation. Previous experience as part of a large multi-disciplined project and with systems vendors which requires having sound project management skills.
• A period of over 8 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 opportunitiesincluding job rotations to broaden your expertisewe empower you to define and shape your own success. When you join the IESO heres what you can expect:

• Best-in-class benefits and long-term support in the form of a defined benefit pension plan.
• A commitment to flexibility as we currently support a hybrid model where applicable that supports a blend of remote and in-office work based on business needs. Participating employees typically work in-office a minimum of four days and work remotely up to six days over a two-week period with a goal of maximizing in-office time through the use of established team days.
• 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.

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.

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 environmentone that values every team members 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.

Were proud to say weve been recognized as a supportive inclusive employer.