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Senior Specialist Market Models

 

Date: April 29, 2026

Location: Mississauga, ON – Hybrid

Requisition ID: 20995

Status: Regular

Business Unit: Markets and Reliability

Grade/Band: MP5

Shift Work: N/A

Number of Openings: 3

Annual Pay Range: For standard 35-hour work week

Step 1: $118,456 to Step 10: $169,208

 

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 is a unionized position that falls within the Market Analysis Department in the Markets & Relabiliity Business Unit.

 

What makes this role exciting

 

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

 

  • Lead, and undertake studies, programs or projects related to real or potential impacts based on developments and/or trends in the electricity industry and other energy markets. Model and evaluate the impact of changes in the Ontario Electricity market design and/or rules on key market variables. Analyze and produce recommendations and reports on specific market evolution initiatives. Provide guidance regarding the appropriate use and interpretation of information produced by or related to market analysis or research. Participate in public stakeholdering of market development recommendations and reports.

  • Please note: this posting represents three opportunities. The level of this role (Senior Specialist OR Specialist) will depend on the candidate's experience, qualifications and capabilities. 


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:

 

  • Maintain a current knowledge on developments and/or trends in mathematical models used in the electricity industry and other energy markets. Peruse academic and technical reports, studies, books, journals etc., dealing with various aspects of energy market models. Keep abreast of technological developments and best practices in the industry as they apply to electricity market models. 
  • Lead and undertake studies, programs or projects related to real or potential impacts based on developments and/or trends in the electricity industry and other energy markets. Model and analyze changes in Ontario Electricity Market design and/or rules on key market variables. Collaborate within the group towards the provision of guidance and direction to management on the relevance of evaluation results to the Ontario electricity market.
  • Develop business processes, models/tools, and procedures to evaluate and estimate impact of changes in the Ontario Electricity Market design and/or rules on key market variables. On an on-going basis, assist in reviewing the effectiveness of existing market analysis and reporting processes, systems and procedures. Work with other internal groups to develop models, application software tools, perform acceptance testing and identify business requirements for computer hardware. Develop and implement effective and efficient improvements, as necessary. Communicate with other IESO staff regarding the appropriate use and interpretation of information produced by, or related to, market analysis or research.
  • Communicate with public and other internal groups as necessary to respond to requests for data and information, while respecting confidentiality criteria. Participate in public stakeholdering of market development initiatives.
    Provide technical advice, guidance, or written reports, as appropriate. 

 

In a typical day, you wil

 

  • Model and evaluate the impact of changes in the Ontario Electricity Market design and/or rules on key market variables.
  • Work collaboratively with other members of the Markets division to effectively implement the goals of the team within the context of the broader corporate direction. Mentor team members in areas of market models and design.
  • Perform other duties as required.

 

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:

  • Requires knowledge of economics, engineering, operations research or mathematics to conduct market modeling and analytical studies related to the energy industry and the electricity market. Requires deep understanding of the IESO-administered market design. Requires good technical knowledge of formulating objective functions and constraints for electricity market models. Requires good technical knowledge of optimization techniques. Requires excellent oral and written communication skills in order to prepare reports and communicate effectively with all contacts involved in accomplishing work objectives.

  • This knowledge is considered to be normally acquired either through the successful completion of four years university education in the appropriate field, or by having the equivalent experience.

 

Experience:

  • Requires demonstrated deep understanding of the design and operation of the IESO-administered market, with particular emphasis on the market calculation engine. Requires considerable understanding of developing mathematical models for resource dispatch and pricing in wholesale electricity markets. Requires a background that allows for broad thinking and analytical and reasoning skills. Requires demonstrated ability to review vast amounts of information, breaking it down, prioritizing and synthesizing it. Requires experience in building relationships and strong interpersonal skills. Requires computer experience including exposure to modeling, optimization mathematics, and desktop software applications. 

  • A period of 8 years and up to 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: May 13, 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 currently has a 3-day in-office work week for applicable roles. 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. 

 

Be sure to follow us on LinkedIn.

 

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