Sr Specialist Information Security

INDEPENDENT ELECTRICITY SYSTEM OPERATOR (IESO)

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.  

Who we are 

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:

• Develop 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 in coordination with IT Process Development Leaders and the Information Security Manager.
• Develop and implement 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, cyber threat and risk assessment.
• Keep abreast of geopolitical events and global or regional cyber threats. 
• Keep abreast of developments in the areas of legal, regulatory, corporate requirements, technological developments, and best practices in the Information Technology and Cyber Security field.
• Ensure there are adequate security tools available for performing system reviews.
• Report the results of Strategic, Tactical, and Operations Information Security assessments with conclusions, recommendations for improvement, planned management actions, follow-up status to Information Security Management Teams.
• 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.
• Will have access/handle confidentiality issues, requiring high level of trust and integrity.
• Perform other duties/tasks/projects as required or assigned.

What you'll need to succeed

• 4-year bachelor's degree in Computer Engineering, Computer Science, Information/Cyber Security, or related disciplines; or equivalent work experience.
• Relevant certifications in the field of Cyber Security: CISSP, SSCP, GCTI or other GIAC certifications, CISA, etc.
• The ability to interact with IESO personnel, build strong relationships at all levels and across all business units and organizations, and understand business imperatives.
• Self-motivating, self-identification of problems and resolution with minimal supervision.
• A strong understanding of the business impact of security tools, technologies and policies.
• Excellent verbal, written and interpersonal communication skills, including the ability to communicate effectively with senior business unit leaders and an excellent understanding of information security concepts, protocols, industry best practices and strategies.
• experience coordinating/analyzing enterprise security systems on a diverse set of computing platforms, operating systems, and applications, especially Windows NT and UNIX.
• Proficiency in performing risk, business impact, and threat assessments.
• Sound Experience with information security and 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 eight years of experience, up to and including fifteen years, is considered necessary to gain this experience.

What’s in it for you

• A comprehensive total rewards program, including best-in-class benefits and a flexible workplace 
• A challenging, fast-paced and collaborative team environment, where your perspectives and experiences matter 
• Leaders who support your growth and success through regular feedback and coaching 
• The opportunity to work with some of the brightest minds in the industry 
   

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. 

Note: The successful candidate must be eligible to work in Canada and will be subject to a background check.

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.

Join our talent community

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.