Analyst Operational Assessments (Ex-post)

Date: December 12 2025

Location: Mississauga

Requisition ID: 20775

Status:Temporary up to 12 month

Business Unit:Markets and Reliability

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 Ex-post team within Markets and Reliability. This is a union job.

What makes this role exciting

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

The Ex-post team plays a critical role in ensuring integrity in Ontarios electricity market by collaborating with both Day-Ahead and Real-Time operators to resolve discrepancies and errors to maintain accurate market data for settlement purposes.The team utilizes a variety of advanced market tools to monitor and administer market schedules and prices making it a dynamic and impactful part of the market operations team.

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:

• Assist in developing appropriate processes to support Operations activities. Identify the objectives of business processes assess the risk of not meeting those objectives and identify process controls to mitigate risk as appropriate. Document process objectives tasks risks and controls in summary documentation (e.g. risk-control matrices).
• Work with senior department staff subject matter experts (SME) from different business units to produce business process documentations including procedural instructions for Operations activities.
• Work with senior department staff SMEs within and outside Operations as necessary to assist in integrating new technology/market design into IESO Operations.
• Liaise with Operations staff to understand issues with the performance of existing operational tools and processes and follow-up with relevant groups including Information Technology (IT) to facilitate their resolution.
• Assist in developing end user computing tools as necessary to support Operations tasks including operation of the IESO controlled grid and operation of the IESO administered markets.
• Work towards developing knowledge of Operations processes (including but not limited to day-ahead scheduling control room procedures real-time scheduling) for the purposes of interpreting and assessing the priority of issues regarding Operations tools and processes.
• Assist in executing forward market functions in a timely manner.
• Contribute to internal and external working groups and provide Operations perspective by participating in various stakeholder engagements that impact the operation of the IESO administered markets.
• Assist senior department staff in assessing the effectiveness of new programs and potential solutions to address operational and market inefficiencies in coordination with SMEs from other business units.
• Assist in the assessment of operational events for their compliance with legislation regulations and standards including the market rules and market manuals NERC standards and NPCC criteria Where needed assist in conducting root cause analysis to develop appropriate mitigation plans to contain IESOs compliance risk exposure.
• Assist in conducting ex-post and ex-ante operational assessments to identify operating and ancillary services needs to mitigate any reliability and operability risks.
• Support senior department staff in performing analysis by gathering and screening data providing input where appropriate and drafting related materials as assigned.
• Prepare materials for meetings reports and presentations made by senior operations staff.
• Support as required specialized system and market efficiency studies
• Provide support as required to other business units agencies and market participants to fulfill strategic plans.
• Assist senior department staff as required on key tasks and assignments.
• Perform other duties as required.

In a typical day you will assist in developing the appropriate processes and tools including end user computing (EUC) tools and conducting Ex-Post assessments to identify operating and ancillary services needs to mitigate any reliability and operability risks.

Role Requirements

Our team consists of experts from diverse backgrounds each bringing their unique perspectives and skills.
To succeed in this role youll need:

• Requires an engineering knowledge of electrical theory power system analysis and control mathematics computer science economics and other specialty related courses to undertake 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 and data analysis to conduct quantitative assessments.
• This knowledge is considered to be normally acquired either through the successful completion of a four-year university education in an appropriate field/discipline or by having the equivalent education.
• Requires exposure to the overall power system operation and basic understanding of the IESO-Administered Markets their operation and the characteristic of the interconnected systems to support the activities of the IESO. Requires excellent facility in written and oral communications including the ability to prepare effective documentation recommendations and reports. Requires working with multiple stakeholders including customers.
• Requires computer experience including exposure to statistical and database software desktop software applications computer data conversion various PC-based query and calculation tools and computer system interfaces. Requires experience in applying testing and considering the merits of alternatives. Requires good customer service skills.
• A period of over 4 year up to and including 6 years is considered necessary to gain this experience.

If your skills and experiences exceed what we are looking for in this role please consider applying to the Specialist Expost by clicking on the following URL 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.
• 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

January 8 2026.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 will be transitioning to a 3-day in-office work week effective January 2026. 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 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.

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