Job Description

Date October 8, 2025
Location Mississauga, ON (Hybrid)
Requisition ID 20649
Status Regular
Business Unit Information and Technology Services
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 role is a part of...

• This role is part of the Infrastructure and Operations team responsible for delivering secure and reliable network connectivity to support the IESO's critical IT infrastructure. It ensures system reliability by safeguarding the infrastructure that underpins real-time operations, market functions, and planning activities.

What makes this role exciting
The energy sector is rapidly evolving, offering exciting new opportunities for those who want to make a difference.
Assist in the design, installation, and technical support functions for the IESO common infrastructure network and telecommunication facilities including the interfaces with market participants at the IESO Control Centres and supporting field locations. * Composition of IESO common infrastructure:

• TELECOMMUNICATIONS FACILITIES consist of data/voice communications networks supporting the following areas: collecting and providing field data and control functions for power system operation, Market Participant Networks, Market Services, settlement services, call centre and office telephone systems.
• COMPUTER NETWORK FACILITIES are tightly integrated and linked with other IESO and non-IESO facilities, consist of a complex network of routers, switches, servers, storage arrays, firewalls/ security devices and Wide Area Network (WAN) links.

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:

• Assist in the design, installation, check into service, maintenance, modification and upgrade of IESO common infrastructure facilities to maintain existing standards and to meet the changing business needs.
• Contribute to the evaluation, planning, and development of upgrade/enhancement proposals related to IESO common infrastructure. These proposals are based on assessments of new and emerging user requirements, analysis of systems and equipment performance data.
• Participate in the development and design of evolutionary voice/data infrastructure solutions to meet IESO business requirements. In conjunction with others, provide solutions from concept, through technical evolution and feasibility to final implementation.
• Assist in carrying out technical and operational support (Tier 2 and 3) for IESO IT infrastructure including operating system support for servers, databases, as well as network switches, routers and firewalls.
• Assist in the implementation of IESO security policies by creating and configuring servers, firewalls, routers and other network security equipment. Contribute to the evaluation of risks and the effectiveness of systems in enforcing these policies. Investigate security issues, recommend and implement changes to mitigate/reduce known risks.
• As assigned, conduct necessary actions for the operation, support and administration of common infrastructure server facilities to meet IESO business needs. This involves a sound understanding of the design, implementation and operating philosophy of various desktop products, operating systems and server equipment used to provide these common services.

In a typical day, you will

• Perform analysis and respond system incidents and related problems. Troubleshoot, isolate and resolve incidents and problems within guidelines. Perform system administration; provide support to personnel involved in system administration activities.
• Assist in the provision of project management support to projects or teams involved in the expansion and improvement of information systems and tools.
• Contribute as directed to the development of strategic plans and standards, procedures and tests.
• As part of a team, contribute to help associates advance their learning and facilitate their problem solving skills within their respective area of expertise.
• 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 a knowledge of computer science or computer systems engineering in order to design, develop, and support small to large-scale computer systems and networks. Specific knowledge would include telecommunication concepts, voice system architecture, networking and system administration.
• This knowledge is considered to be normally acquired either through the successful completion of a four-year University education in the appropriate discipline or by having the equivalent education.

Experience:

• Requires background experience in the design, development, and support of computer systems, such as may be gained through exposure to the following areas:

• Computer system architecture, design, configuration and integration;
• Local Area and Wide Area networking
• Telecommunications devices, voice/PBX and digital/network communications equipment;
• Administration and use of standard or proprietary computer operating systems;
• Development of computer applications using standard development languages;
• Support of small to large scale computer systems;
• Desktop computer configuration;
• Network servers administration/support and/or firewalls/network security devices.
• Field metering and relaying

• Requires some experience as may be gained through exposure to IESO infrastructures as they relate to power system/energy market operations. Requires experience in preparing technical reports and procedures.
• A period of over four years, up to and including six 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.
• A commitment to flexibility as we currently support a hybrid model where applicable, that supports a blend of remote and in-office work based on business needs. Participating employees typically work in-office a minimum of four days and work remotely up to six days over a two-week period with a goal of maximizing in-office time through the use of established team days.
• 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 October 14, 2025 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.
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.

Skills Required