Apply now »

Senior Manager Infrastructure

Date November 13, 2025

Location Mississauga, ON – Hybrid

Requisition ID 20716

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…

IT Operations division within Information & Technology Services. The Senior Manager, Infrastructure leads the teams responsible for the IESO’s core infrastructure platforms and plays a key role in delivering secure, reliable, and modern technology services that support the IESO’s business operations and grid reliability mandate.
Information and Technology Services - Non-unionized

What makes this role exciting

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

This position is accountable for the IT Infrastructure department within the Information and Technology Services (I&TS) business unit reporting directly to the Director, IT Operations.

The accountabilities of the IT Infrastructure department include:

Acquisition, configuration, implementation and management of all infrastructure (H/W and S/W) required to deliver services to the business related to business systems, communications and collaboration
Procurement and management of all telecommunication links (internet, MPLS, and other links provided by third party telecommunication providers)
Tier 2 & 3 support of IESO core infrastructure hardware
Technical Analysis service for changes to infrastructure
Development of standards and guidelines for infrastructure usage/delivery at the IESO

The Senior Manager, Infrastructure is responsible for the day to day activities necessary to fulfill these accountabilities.

The Senior Manager, Infrastructure must develop and maintain key relationships within I&TS as well as Enterprise Change and develop a good understanding of all business functions at the IESO. This includes:

Coordination with the Business Service departments to deliver infrastructure services that can be effectively supported and that projects provide staff with the appropriate training, tools and procedures to perform their responsibilities
Coordination with the Business Solutions department to deliver holistic IT solutions that integrate with other IESO infrastructure and business solutions and that projects provide staff with the appropriate training, tools and procedures to perform their responsibilities.
Coordination with Information Security to deliver solutions that are aligned with security standards and guidelines
Coordinate with Enterprise Change to become an effective team when delivering projects that involve IT changes.

The Senior Manager, Infrastructure must manage staff and their work programs/projects ensuring priorities and deadlines are met and that services are delivered according to defined service levels. The Senior Manager, Infrastructure must also exercise full managerial accountabilities, including human resource management in the areas of staff development, training, performance reviews, staff hiring and advancement, salary recommendations/approvals, all aspects of performance management including dismissal, administering work programs and ensuring staff output effectively meets business needs and goals.

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:

Deliver assigned Information and Technology Services (I&TS) programs and projects, and support the delivery of overall I&TS programs and projects.
Initiate, oversee and coordinate the delivery of assigned business systems or technology-related projects or enhancements in accordance with approved business case and Project Definition document.
Define the objectives and scope of projects including impacts, critical factors, responsibilities, constraints and contingencies.
Plan and assign projects with appropriate instructions and technical directions assuming primary responsibility for achieving project objectives.
Integrate the efforts of the team with others both inside and outside I&TS.
Monitor project status and work results to ensure timely progress and desired quality.
Direct the preparation of project estimates.
Recommend resource allocations and assignments.
Review plans and results with customers.
Lead, co-ordinate, and manage a team in the delivery of I&TS programs and projects.
Manage assigned staff engaged in the development, implementation, maintenance, support and documentation of application systems, hardware, production operation, operating and support systems.
Plan, organize, direct and prioritize the work of the unit in accordance with established I&TS and company standards, specifications, practices and procedures.
Provide instructions, advice and guidance, and be accountable for the quality and productivity generated by unit. Carry out performance appraisals.
Provide leadership and direction in terms of achieving objectives and accomplishing work programs.
Monitor operational performance of the team against planned targets.
Provide supervision to staff, including full responsibility for hiring and advancement, staff development, training, performance reviews, salary recommendations/approvals, all aspects of performance management, including dismissal, administering work programs and ensuring staff output effectively meet business needs and goals; ensuring quality, quantity, timeliness of work production to achieve business objectives. Effectively resolve work performance issues.
Provide clear expectations, performance measures, meaningful feedback and corrective action as required.
Act as a coach and facilitator to create and sustain a co-operative and supportive team environment. Work with staff to identify training and development needs and solutions to enhance and develop their skills to ensure availability of key knowledge skills to achieve work unit’s objectives.
Provide technical and client account management for assigned areas.
Collaborate and work closely with other I&TS staff to resolve issues and ensure overall I&TS services and deliverables are met. Coordinate activities and commit resources in support of other ITS work units.
Coordinate and direct the efforts of external vendors and suppliers in accordance with contractual terms and ensure compliance with established I&TS and company standards, specifications, practices and procedures. Participate in contract monitoring. Persuade vendors to adopt applications and schedules beneficial to the company.
Negotiate and operate existing IT systems and services to agreed standards. Introduce system changes in a safe and non-disruptive manner. Maintain a complete and accurate understanding of component inter-relationships within the team and the interfaces with other teams.

In a typical day, you will

Contribute to the development of business and technical strategies and architectures that support company and I&TS objectives.
Identify opportunities for improving the efficiency of the products and services for which the team is responsible.
Escalate issues and impediments to I&TS management team in a timely manner.
Stay abreast of technical directions and applications within corporation and the industry. Maintain current knowledge in broad areas of computer and information technology, including new or revised equipment, software, procedures or applications
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 engineering and computer principles to carry out engineering and analytical studies for operating performance analysis. Requires fluency in both oral and written English to communicate effectively.
Requires knowledge of technical writing to prepare effective reports and presentations.
This knowledge is considered to be normally acquired either through the successful completion of a 4-year university education in the appropriate field/ discipline or by having the equivalent level of education.

Experience:

Requires experience with information technology and IT operations practices and procedures. Requires experience in the supervisory aspects of the job.
Requires experience in project management
A period of over 10 years up to and including 12 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: November 27, 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.

Apply now »