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Salas O'Brien

Senior Commissioning Agent (Mechanical)

Toronto, ON, Canada
North York, ON, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Dec 2, 2026
Experience: 5+ years of equivalent MEP construction, commissioning and project management experience.
Posting language: English
Posted: Nov 2, 2026

Original job description

At Salas O’Brien we tell our clients that we’re engineered for impact. This passion for making a difference applies just as much to our team as it does to our projects. That’s why we’re committed to living our values every day: inspiring, achieving, and connecting as shared owners of our success with a focus on a sustainable future.

Building for the long-term means that all of our team members can expect to work on amazing projects with a people-first approach to problem solving. It also means that each member of our team has truly limitless potential to build a unique, meaningful, and high-impact career - and they’ll receive great total rewards along the way.

About Us

Founded in 1975, Salas O’Brien is an employee-owned engineering and professional services firm focused on achieving impact for our clients, our team, and the world. We know that tomorrow’s requirements are today’s opportunities, and we are here to design lasting solutions for pressing challenges.

We work across a variety of industries providing integrated engineering and consulting services. Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more.

Our technical expertise is paired with an exceptional team of business development, human resources, finance and accounting, information technology, and marketing professionals, all of whom play a key role in bringing our commitments to life every day.

Job Summary

Working on our commissioning team (Vertical Start Up Commissioning Group - VSC Group) as a Senior Commissioning Agent (Mechanical), you will be providing commissioning services to our clients, which includes both off-site development work and on-site physical verification services. This is an exciting career for someone who is passionate about quality and doing things right and is seeking an opportunity that offers both hands-on field work and office technical development work.

In This Role, You Will

Work with the latest cloud-based commissioning technology and software.
Develop detailed functional performance test procedures.
Attend commissioning and related meetings, chairing meetings and taking minutes.
Complete onsite commissioning including completing commissioning forms and identifying deficiencies.
Represent VSC Group at commissioning site meetings to present progress status, identify items that are required to be completed by contractors, and answer contractor and client/owner representative questions

You Will Be a Great Fit If You Have/are

Familiarity with the commissioning process (training will be provided).
Understanding of thermal environments in mission-critical facilities such as hospitals, data centers, and bio contamination labs (CL2/3).
Proficiency in psychometrics and heat transfer principles.
Comprehensive knowledge of current building, mechanical, plumbing, fuel gas, fire, and energy codes.
Experience with equipment such as CRACs, CRAHs, AHUs, RTUs, VRFs, evaporators, heat pumps, boilers, chillers, adiabatic coolers, pumps, sensors, cooling towers, heat exchangers, and flowmeters.
Understanding of Building Automation Systems (BAS),
Methods of Procedure (MOPs), Sequences of Operation (SOOs).
Knowledge of trend analysis and Testing, Adjusting, and Balancing (TAB).
Excellent written and verbal communication skills.
Respond thoughtfully and effectively to sensitive situations.
Able to meet tight deadlines.
Excellent attention to detail and organizational skills.

Required Skills/abilities

Completion of a Mechanical Engineering degree / Technologist or Technician diploma/degree in a related field.
5+ years of equivalent MEP construction, commissioning and project management experience.
Computer literacy with MS Office including Word, Excel, and Project.
Ability to work within a team environment.
Ability to work on site/in the field occasionally.
Analytical, problem solving and decision-making skills.
Willing to travel both in and out of Ontario (not outside Canada).
Valid Ontario Driver's license and reliable transportation. Travel throughout Ontario to perform commissioning services will be required.
Personnel security clearance is required at Secret (Level II) or Top Secret (Level III)

Location: Toronto, Ontario, Canada

Travel: Frequent travel is required.

Equal Opportunity Employment Statement

Salas O’Brien provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, colour, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state/provincial, or local laws. Salas O’Brien will accommodate the disability-related needs of applicants as required by law.

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More about this job

Responsibilities

Develop functional performance test procedures and perform commissioning services, including on-site verification, completing commissioning forms, and identifying deficiencies. Represent the commissioning group at meetings, report progress, coordinate outstanding contractor work, and respond to client and contractor questions.

Requirements

Requires a mechanical engineering degree or a related technologist or technician diploma or degree, plus at least five years of equivalent MEP construction, commissioning, and project management experience. Candidates should have relevant mechanical systems and commissioning knowledge, strong communication and organizational skills, a valid Ontario driver's license, reliable transportation, willingness to travel within Ontario, and Secret or Top Secret personnel security clearance.

Skills

Mechanical Commissioning
Functional Performance Testing
Mechanical Systems
Building Automation Systems
Psychrometrics
Heat Transfer
Building and Mechanical Codes
Trend Analysis
Testing, Adjusting, and Balancing
Methods of Procedure
Sequences of Operation
Project Management
Technical Writing
Meeting Facilitation
Problem Solving
Microsoft Office

Visa sponsorship

Not detected in the job text

Keywords

Mechanical Commissioning
MEP Construction
Functional Performance Test Procedures
Commissioning Forms
Deficiency Identification
Cloud-Based Commissioning Technology
Building Automation Systems
Methods of Procedure
Sequences of Operation
Trend Analysis
Testing, Adjusting, and Balancing
Psychrometrics
Heat Transfer
Building Codes
Mechanical Codes
Plumbing Codes
Fuel Gas Codes
Fire Codes
Energy Codes
CRACs
CRAHs
AHUs
RTUs
VRFs
Boilers
Chillers
Cooling Towers
Heat Exchangers
Flowmeters
Microsoft Word

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