Lead Power System Engineer

Independent Electricity System Operator (IESO); Mississauga; Hybrid; CAD 100,000 - 130,000; Full time

Job summary

The Independent Electricity System Operator (IESO) seeks a Lead Power System Engineer in Mississauga for up to 12 months. The role requires significant expertise in power systems, including leadership in technical studies and compliance with NERC and NPCC standards. Join a collaborative team that values diverse skills and experience.

Benefits

Comprehensive benefits package

Flexible workplace

Growth and development opportunities

Qualifications

• Requires advanced engineering knowledge of electrical theory and power system control.
• Knowledge of technical writing to prepare effective reports.
• License to practice professional engineering in Ontario.

Responsibilities

• Lead technical studies and provide team and technical leadership in power systems.
• Support real-time operations and planning activities.
• Assess reliability and validate performance of power system facilities.

Skills

Power System Analysis

Technical Writing

Analytical Studies

Education

Bachelor's degree in Engineering or Applied Sciences

Post-graduate degree (preferred)

Job description

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INDEPENDENT ELECTRICITY SYSTEM OPERATOR (IESO)

Requisition ID: 20438 Location: Mississauga Status: Temporary up to 12 months Business Unit: Markets & Reliability

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

Provide Team And Technical Leadership In The Undertaking Of Complex And Advanced Studies In The Field Of Power Systems In Support Of Real-time Operations, Operations Planning Or Planning Activities. Lead The Analytical And Technical Development Of Policies, Operating Agreements, Equipment Specifications, Operational And Outage Plans And System Investments. Conduct Complex Model Validation, Studies And Analysis That

• contribute to the production of Operating Instructions (including System Control Orders and on-demand limits);
• support IESO security, adequacy and operability obligations found in the Market Rules, and in applicable NERC and NPCC reliability standards;
• assess the impact on reliability and validate performance of new or modified facilities impacting the IESO-controlled-grid;
• develop and update models, data and security applications for existing, new or modified facilities;
• support online and off-line security model management (models, data, and security applications); and
• coordinate with neighboring entities on NERC, NPCC and regional market in the area of reliability matters.
  
  

What You'll Do

Undertake responsibilities to resolve complex and advanced problems and inquiries supporting real-time operations, operations planning, or planning functions. through analysis and application of highly specialized technology in the field of power system operation in areas including:

• Operating Security Limits (all time frames);
• Transfer capability;
• Outage (transmission and resource) assessment and support;
• Transmission services;
• Ancillary service requirements;
• Supply adequacy, security and operability;
• Joint operating and/or planning studies;
• Inter-area activities;
• New or modified power system facilities and connections to the IESO-controlled grid;
• NERC/NPCC reliability standards compliance and support;
• Executing the Day Ahead commitment process;
• Equipment performance and model validation;
• Developing and managing online and off-line development security models used by security and market software;
• Validation of the real time operating plan;
• Mentoring and assisting training of new and/or junior staff; or
• Supporting real-time operations use of operating instructions and the accuracy of security software results.
  
  

Receive direction from Engineering Manager, Engineer Supervisor or Senior Manager in broad terms on specific problems related to assigned areas of work. Obtain necessary data for problem solution. Initiate actions to develop solutions to problems, information to produce necessary justification (documentation, study results, etc.) substantiate recommendations.

Limit Derivation And Outage Integration Role

• Through technical studies, identify bounds of operations and define critical parameters in the power system for all time frames within the normal scope of coverage. Produce reports to support findings and recommendations.
• Through technical studies, identify power system operating limits and instructions in support of real-time, operations planning and long-term planning using appropriate study criteria within normal, high-risk and emergent system conditions.
• As required, derive limits and operating instructions within the normal scope of coverage and for forced/planned outages in all time frames, including the provision of TTC/ATC to facilitate the energy markets, capacity/demand response auctions, and transmission rights markets.
• Coordinate, issue and oversee the revision, maintenance and accuracy of operating limits to support reliability monitoring and security constrained economic dispatch (market) systems through applicable contingency analysis software and instructions used by off-shift and on-shift staff.
• Support real-time monitoring tools as they related to system and market operations.
• Complete outage integration reviews and reporting for system security and adequacy with the purpose of accepting or rejecting outage requests from market participants and neighbouring entities. Coordination between participants, neighbouring entities, or with the IESO maybe be required.
  
  

Common Role

• Support IESO security, adequacy and operability obligations found in the Market Rules and in applicable NERC and NPCC reliability standards.
• Lead and prepare key reliability compliance evidence, including work procedures, RSAWs, market manuals, training material and participation in reliability audits. Act as a subject matter expert in compliance activities; such as on-site audits and spot checks.
• Participate in task forces, as well as internal/external committees on matters related to the secure and economic operation of the IESO-controlled-grid. Represent the IESO on interconnection committees. Participate as assigned, as a representative of the IESO before regulatory agencies, etc. and endeavor to advance the interests of the organization in designated areas.
• Supply a consultative service to other departments and/or business units on matters related to adequacy, security and operability.
• Provide guidance and mentorship to other members of the group. This may include problem resolution, training, and quality checks.
• Sign or sign and seal documents as a P Eng. thus taking professional responsibility for one’s own work.
• Sign or sign and seal documents as a P Eng. for peer review, or to assume professional engineering responsibility for engineering work performed by unlicensed staff.
• Mentor and assist training of new and/or junior staff
• Exercise limited/periodic supervision over assigned staff on special projects.
• Perform other duties as required.
  
  

Education

What you need to succeed

Requires an advanced engineering knowledge of electrical theory, power system analysis and control, associated mathematics and computer science to undertake complex engineering, economic or analytical studies related to the management and control of the bulk power system. Requires knowledge of technical writing to prepare effective reports.

• This knowledge is acquired through the completion of an engineering/applied sciences degree from an accredited university or by having the equivalent education. Additional study in areas of advanced engineering knowledge, as may be attained through self-study and long-term association with the job demands, combined with short specialized courses, are required to carry out the job requirements. The completion of a related post-graduate degree, is preferred, but not required.
• Requires a license to engage in the practice professional engineering in Ontario and be competent in the field of electrical engineering.
  
  

Experience

Requires significant exposure to the overall power system operation through progressive training as an engineer in this technical field. Requires specific experience as applicable to the particular specialty of the group including that of encompassing a leadership role in the undertaking of studies and investigations in this particular field. Experience will include completion of practical on the job training and experience completing work related to the fields of:

• Utilization of generation resources
• Secure operation of bulk electricity system
• Reliability
  

Background Experience Will Include

• Electrical engineering design concepts as they relate to the functions and characteristics of power system components
• Analytical studies and the application of computer techniques to solve power system problems
• Familiarity with power system operation, practices, and policies
• Familiarity with electric energy and transmission rights market operations, practices, policies, and Market Rules
• Competitive market operations
• Provincial operating and system requirements
• Particulars of power system operation, including technical features of equipment and facilities, high-tension transmission, system interconnection and methods of attaining efficiency in power production and interchange between systems
• A period of over 8 years, up to and including 10 years is considered necessary to gain this experience.
  
  

If you do not meet all the qualifications for the Lead Power System Engineer position, please consider applying to the Power System Engineer opportunity.

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: June 23, 2025

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 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.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

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  Engineering and Information Technology

• Industries

  Utilities

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