Windows Server Infrastructure Specialist

Date: March 12, 2026

Location: Mississauga, ON – Hybrid

Requisition ID: 20903

Status: Regular

Business Unit: Information and Technology Services

Grade/Band: MP4

Shift Work: N/A

Annual Pay Range: For standard 35-hour work week

Step 1: $111,072 to Step 10: $158,704

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 IT Operations Division in the Information and Technology Services 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.

• Provide system support during the production life cycle of information technology systems (developed by or purchased for (IT&I) by establishing user requirements, system design, integration of commercial products, software development, enhancements, troubleshooting, preparing procedures, consulting, training and researching commercial products.

  
  

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:

• Develop standards, participate in the development of strategic plans and provide operational and design specifications for Information and Technology Services (I&TS) managed systems.
• Provide systems design expertise to support the development of computer based information systems/tools to meet the needs of customers by establishing user requirements, developing system designs, integrating commercial products, code software and test systems.  Provide project management support to design projects/teams or information systems or tools. 
• Design, build, and operate hosting systems which includes server and network components to deliver required system functions.
• Manage the evolution of existing hosting systems and tools by implementing enhancements to provide additional functionality, correct problems to improve reliability, maintainability, improve server management capabilities, and respond to advanced system problems or failures to restore system functionality.
• Perform server management duties, prepare procedures and/or support personnel involved in server management activities.
• Research commercial products and tools which can be used in the design or support of information systems and tools and perform ongoing assessments of their ability to meet current and future requirements.
• Provide systems consulting support to operations, maintenance or software development staff.

In a typical day, you will 

• Develop procedures required for the secure operation and management of information systems or tools. Perform hosting attestation to ensure compliance to set standards, meeting requirements, and identification of  improvement opportunities.
• Act as a consultant or mentor to peers to advance their learning and facilitate their problem solving skills with their respective areas 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 server management, Unix, Windows, infrastructure monitoring tools, computer science subjects and disciplines in order to design, develop and support small to large scale computer systems and networks.
• Specific knowledge would include system design, networking and system administration. Requires a knowledge of technical writing to prepare effective reports.
• 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 level of education.
   

Experience:

• Requires considerable experience in the design, development and support of computer systems. This experience will be gained through work in the following areas:
  • computer system architecture, design and integration
  • system networking
  • 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
  • database design and administration. 
• A period of up to eight 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: March 26, 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. 

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