Sr Specialist Information Security

Sr Specialist Information Security

INDEPENDENT ELECTRICITY SYSTEM OPERATOR (IESO)

Requisition ID:

20455

Location:

Mississauga, ON (Hybrid)

Status:

Regular

Business Unit:

Information & Technology Services

Why join us?

You’ve got great skills. And you want to use them in an organization where you know what you do every day matters. We get that.

We also know that ensuring Ontarians have access to affordable and reliable power doesn’t happen by accident. So we give you the tools, flexibility and support you need to achieve your goals, and development opportunities to help you grow. You’ll thrive in a collaborative, team-based environment that values your unique skills and experiences – and recognizes that when you do better, we become even better too.

The Independent Electricity System Operator (IESO) works at the centre of the province’s power system, ensuring Ontarians have access to reliable and cost-effective electricity when and where they need it. We operate the province’s electricity grid 24/7, design, run and oversee the wholesale electricity markets, and plan and prepare to meet Ontario’s electricity needs – now and into the future.

The opportunity

The Sr. Specialist, Information Security, reporting to the Sr. Manager Cyber Operations, Intelligence, and Governances, will be responsible for the growth of the IESO's Information Security and Cyber Threat intelligence functions through the implementation of cyber security best practices, management of cyber security partnerships, and continuous review of cyber security threats and risks. This role will require a high degree of autonomy relationship building amongst a cross functional team of individuals, lines of business, and external stakeholders. Extensive expertise in the development and implementation cyber security procedures, application of cyber security architecture concepts, cyber security threat and risk management, and/or cyber threat intelligence is required.

What you'll do

Under the oversight and management of the Senior Manager, Cyber Intelligence, Operations and Governance, the Sr. Specialist will:

What you'll need to succeed

A period of over eight years of experience, up to and including fifteen years, is considered necessary to gain this experience.

What’s in it for you

Deadline: July 7, 2025 at 11:59PM

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

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 thank you for your interest in a career at the IESO, but we will only contact those candidates selected for an interview.

The IESO offers a hybrid work model program to most of our employees, based on business needs. Individuals participating in the program can work an average of three days per week remotely within Ontario. It also offers three flex weeks when individuals can work remotely within Ontario. When working in the office, you will be located at our Mississauga, Toronto, or Oakville location.

Sign up for talent community; stay in touch, find out about new opportunities – and discover how you can make a difference. Discover how we use our expertise and commitment to deliver reliable and affordable electricity to Ontario’s businesses and communities, and how we’re innovating to secure a stronger energy future for all Ontarians. Visit Careers at IESO and be sure to follow us on LinkedIn.

Find out why we were selected as Greater Toronto’s Top 2025 Employers, and what we offer.