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Posted 4 days ago

Senior Commissioning Agent (Mechanical)

@ Salas O'Brien

Ontario

Full-time5+ years experience
Apply now
SIGNALS

Overview

Salas O'Brien is hiring a Senior Commissioning Agent (Mechanical) for its Vertical Start-Up Commissioning Group in Toronto, Ontario. The role combines office-based development of commissioning procedures with frequent on-site verification of HVAC and mechanical systems. The posting requires 5+ years of MEP construction, commissioning and project management experience, a valid Ontario driver's licence and reliability clearance.

Responsibilities:

  • Develop detailed functional performance test procedures
  • Chair, manage and attend commissioning meetings
  • Complete onsite installation inspections and identify issues
  • Represent VSC Group at site meetings
  • Work with cloud-based commissioning technology

Requirements summary:

  • Mechanical or mechatronics engineering degree or technologist diploma
  • 5+ years of MEP construction, commissioning and project management
  • Knowledge of HVAC and containment environmental controls
  • Reliability clearance required
  • Valid Ontario driver's licence

Tools & skills

Source and dates

Employer career site / ATS feed · ultipro

Employer posting date
2026-11-02
First seen by our source
2026-11-02
Source record updated
2026-11-02

These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.

Job details

SenioritySenior
DepartmentEngineering
Experience5+ years
Hours per week40 (estimated)
Scheduleday
Travelair: none · ground: frequent
Work settingOffice, Client sites, Plant or factory
PositionSitting and standing
Physical demandsphysical moderate · computer high
LanguagesEnglish
Licences & certificationsReliability clearance
Driver’s licencerequired
EducationBachelor’s degree (preferred), Trade certificate (preferred)
Fields of studyMechanical Engineering, Mechatronics Engineering
Security clearanceReliability status

Summary and details written by AI from the posting; the employer’s posting is the authority.

Salas O'Brien

Saved company profile

Historical company information from a saved The Jobs API profile (LinkedIn/Crunchbase fields). It is not live-verified; figures may have changed. Missing values remain unknown.

Full company description

Salas O’Brien is an employee-owned engineering and technical services firm focused on advancing the human experience through the built environment. Our team is engineered for impact™, helping clients achieve critical goals, advancing our team members through growth and opportunity, and operating at the center of important global issues, including sustainability and decarbonization. We are a top firm as ranked by Engineering News-Record and Consulting-Specifying Engineer, and we have appeared for over a decade on the Inc. 5000 list of North America’s fastest-growing private companies.

LinkedIn followers
58,289
People associated on LinkedIn
2,142
Reported office locations
  • 8825 Research Dr, Irvine, California 92618, US
Other recorded names
  • M/E Engineering
  • Salas O'Brien
Specialties
  • Architecture and Interiors
  • Commissioning
  • Fire Protection
  • LEED and Cost Estimating
  • Energy Efficiency
  • Alternative Energy: Fuel Cells
  • Wind
  • Solar and Geothermal
  • Technology Design
  • Structural Engineering
  • Civil Engineering
  • Acoustics
  • Lighting Design
  • Mechanical
  • Electrical
  • Plumbing
  • and Security
Profile identifies a recruitment agency
No

Salas O’Brien is an employee-owned engineering and technical services firm focused on advancing the human experience through the built environment. Our team is engineered for impact™, helping clients achieve critical goals, advancing our team members through growth and opportunity, and operating at the center of important global issues, including sustainability and decarbonization. We are a top firm as ranked by…

FieldValue
IndustryEngineering Services
Company size1,001-5,000 employees
HeadquartersIrvine, California
Organization typePrivately Held
SpecialtiesArchitecture and InteriorsCommissioningFire ProtectionLEED and Cost EstimatingEnergy EfficiencyAlternative Energy: Fuel CellsWindSolar and GeothermalTechnology DesignStructural Engineering
Open jobs on Jobsy17
LinkedInView page
Job description

Senior Commissioning Agent (Mechanical)

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.

About Our Commissioning Team:

Vertical Start-Up Commissioning Group (VSC) is dedicated to improving facility and system start-ups through effective commissioning practices.

VSC is known in the industry for upholding the highest standards and methods for the commissioning process. Our team of engineers, technicians and technologists with many decades of practical “hands-on” experience ensures that our customers receive fully operational and functioning systems at the time of turnover.

Job Summary:

Working on our commissioning team 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.
  • Chair, manage, and attend commissioning related meetings.
  • Complete onsite commissioning including completing installations inspections, identifying issues, and completing supporting documentation.
  • 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, including pre-functional testing, functional performance testing (FPT), integrated systems testing (IST), and validation activities (training will be provided).
  • Understanding of environmental control requirements within CL2 and CL3 laboratories, clean rooms, containment facilities, pharmaceutical environments, healthcare facilities, and mission-critical research spaces.
  • Strong knowledge of airflow management, pressurization cascades, containment strategies, temperature and humidity control, and environmental monitoring systems.
  • Proficiency in psychrometrics, heat transfer, fluid dynamics, and HVAC system performance analysis.
  • Comprehensive knowledge of applicable building, mechanical, plumbing, fuel gas, fire protection, energy, laboratory, and biosafety codes and standards.
  • Experience with critical environmental control equipment, including AHUs, MAUs, exhaust systems, HEPA filtration systems, BSCs, fan filter units (FFUs), VRFs, heat pumps, chillers, boilers, pumps, cooling towers, heat exchangers, airflow measurement stations, and environmental monitoring sensors.
  • Understanding of Building Automation Systems (BAS), Laboratory Control Systems (LCS), room pressurization monitoring, and critical alarm management systems.
  • Experience interpreting and validating Sequences of Operation (SOOs), Control Narratives, Methods of Procedure (MOPs), Cause and Effect Matrices, and Integrated Testing Plans.
  • Knowledge of airflow visualization testing, room pressurization verification, trend analysis, Testing, Adjusting and Balancing (TAB), and containment performance verification.
  • Ability to analyze and troubleshoot complex HVAC and control system interactions in clean room and high-containment laboratory environments.
  • Excellent written and verbal communication skills with the ability to prepare clear technical reports and commissioning documentation.
  • Ability to respond professionally and effectively in sensitive operational and regulatory environments.
  • Ability to manage multiple priorities and meet aggressive project schedules and commissioning milestones.
  • Exceptional attention to detail, organization, and commitment to quality and regulatory compliance.

Required Skills/abilities:

  • Completion of a Mechanical / Mechatronics Engineering degree / Technologist or Technician diploma 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 nationally within Canada.
  • Valid Ontario Driver's license and reliable transportation. Travel throughout Ontario to perform commissioning services will be required.
  • Reliability clearance required.
  • Eligible for Federal Government security clearance at Secret (Level II) or Top Secret (Level III) preferred.

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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