Contribute to the company’s growth while honing your skills
Join a team dedicated to creating a positive impact in the community
Enjoy a competitive salary of $90k-$110k, comprehensive benefits, and a supportive work environment!
Contribute to the company’s growth while honing your skills
Join a team dedicated to creating a positive impact in the community
Enjoy a market-competitive salary of $90k-$110k, comprehensive benefits, and a supportive work environment!
About MAT 4Site Engineers Ltd. MAT 4Site Engineers is a privately owned company located in the heart of the GTA that specializes in the design and engineering of building systems. Beginning with mechanical services, MAT 4Site Engineers has expanded to provide complete building services including electrical, energy modeling, communications, IT, and commissioning services. Since being established in 2004, our goal at the time was to help our clients create their Best Buildings - buildings that were best suited for our clients’ needs. Our commitment to this goal has never wavered.
At MAT 4Site Engineers, we pride ourselves on hiring only the best and the brightest. We have a dynamic team and a teamwork-based environment. We ensure that you will always be well compensated for your valuable time and effort - we want you for the long term and we want you to be at your best.
For more information, please visit our website.
About The Opportunity Currently, MAT 4Site has an exciting opportunity for a Senior Commissioning Agent to join our team in Toronto (North York), ON on a full time basis. This role will operate on a hybrid basis of in-office/on-site and work from home.
In this role, you will deliver commissioning projects that verify building systems are designed, installed, and operating in accordance with client requirements and engineering design intent. You will collaborate closely with clients, contractors, architects, engineers, and project teams across commercial, multi-residential, industrial, and institutional facilities.
More specifically, your responsibilities include but are not limited to:




Participating in design reviews of mechanical and electrical drawings, specifications, and other design documentation
Preparing commissioning plans, specifications, design review memos, reports, meeting minutes, and issue logs
Coordinating commissioning activities with clients, contractors, consultants, design teams, and relevant authorities
Performing on-site observations, inspections, testing, validation, and verification of building systems
Conducting functional performance testing of mechanical, electrical, plumbing, controls, and fire protection systems
Reviewing building systems to verify performance against project requirements and design intent
Identifying commissioning issues and working with contractors and project teams to troubleshoot and resolve deficiencies
Reviewing and analyzing building automation and energy management system trend data
Assessing system performance, reliability, stability, and sequences of operation
Reviewing hydronic schematics, P&ID; diagrams, controls graphics, and related technical documentation
Preparing and maintaining clear commissioning records and project documentation
Attending job site meetings, field surveys, and other project activities as required
More About You To qualify, you will need a Bachelor’s degree or diploma in mechanical or electrical engineering, construction, or HVAC, or a related field. A minimum of 5 years of experience in commissioning or a similar role , working with HVAC, plumbing, fire protection, controls, and mechanical building systems across commercial, multi-residential, industrial, or institutional facilities, will also be essential. A valid driver’s licence and regular access to a reliable vehicle are required.
Additionally,



the following skills and background will be highly valued:
CBCP, BCxP, or another recognized commissioning certification
Experience in building services design and mechanical system drawing preparation
Knowledge and understanding of electrical building systems
Knowledge of ASHRAE Guideline 0, CSA Z320, CSA Z318, and relevant NFPA and CSA standards
In-depth knowledge of the Ontario Building Code and Ontario Fire Code
Proficiency with MS Office Suite, and BlueBeam
As our ideal candidate, you will possess solid communication, organization, problem-solving, and technical skills that will enable you to effectively manage projects and communicate complex information to a range of stakeholders. Your collaborative mindset, initiative, adaptability, and commitment to quality will align well with our values of Quality, Respect, Efficiency, and Dedication.
This is a hands-on technical opportunity for an experienced commissioning professional who enjoys solving complex building-system challenges, collaborating across disciplines, and helping clients create high-performing buildings that meet their operational needs.
About The Advantages The successful candidate will be rewarded with a competitive salary of $90k-$110k, evaluated based on skills and experience. You'll also be entitled to a benefits package that includes:
Full medical benefits with 100% coverage
Health-Based Rewards Program
Annual bonuses tied to company and individual performance
Additional time off over the holidays in addition to standard vacation
A flexible schedule and casual dress code
Yearly compensation review
Half-day Fridays
Paid travel expenses and allowances
Regular gatherings for staff such as our holiday party, summer party, social committee events, lunches, and more
First-Class On-Boarding
Excellent training and development opportunities through educational assistance, professional development, and both on and off-the-job training
The opportunity to expand your knowledge and experience by working on a wide variety of projects

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📌 Senior Commissioning Agent (Ontario)
🏢 MAT 4Site Engineers
📍 Ontario