Site Resident Mechanical Engineer, Buildings

About the Opportunity – Build the Future with Us

Join WSP’s Building & Transportation Mechanical & Electrical (M&E) Team as a Site Mechanical Engineer, supporting major infrastructure projects located in downtown Toronto. This role places you at the centre of site execution, where your technical expertise and construction‑phase leadership help deliver some of Canada’s most complex and impactful transportation and building projects.

• Deliver mechanical design and site engineering services for transportation building projects.
• Act as WSP’s mechanical engineering representative during construction, supporting contractors, owners, and internal teams through all phases of site execution.
• Lead the design and implementation of mechanical systems including HVAC, hydronic systems, plumbing, fire protection, and BAS.
• Conduct regular site visits and field reviews to verify installations align with design intent, codes, and contract documents.
• Review and respond to shop drawings, RFIs, change requests, and proposed design deviations with a strong focus on constructability.
• Support commissioning, testing, start‑up, and close‑out activities to ensure safe, reliable system performance.
• Mentor and guide junior engineers and EITs, contributing to technical excellence and team development.

• A Bachelor’s degree in Mechanical Engineering and P.Eng. registration with PEO
  .
• 5+ years of experience designing mechanical systems for transportation, commercial, healthcare, or light industrial projects.
• Strong knowledge of applicable codes and standards (OBC, CSA, ASHRAE, ASPE, NFPA, SMACNA, AREMA).
• Proven experience providing construction administration and field engineering services on complex projects.
• Expertise with mechanical design and analysis software (e.g., HAP/Tracer, duct and pipe sizing, equipment selection).
• Experience coordinating with contractors, commissioning agents, inspectors, and AHJs.
• Familiarity with GO Metrolinx and TTC design standards.
• Confidence working in active construction environments with frequent site presence.

• AB, BC, NT, NU, SK & YT: $89,800 – $118,900
• MB & ON: $81,900 – $112,800
• NB, NL, NS, PE & QC: $81,100 – $107,700

Disclosure: The final salary awarded for this role may vary from the above range based on several factors including, but not limited to, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs. The wage range provided in this job posting may be subject to change for business purposes.

If you’re a Mechanical Engineer who thrives in site‑based environments and wants to play a hands‑on role in delivering complex infrastructure,
we’d love to hear from you
.

Health and Safety is a core paramount value of WSP. It is expected that you comply with our Health, Safety & Environment (HSE) policy at all times as well as client HSE policies when working at client locations. Full details are available on our website.

Some safety‑sensitive positions involve fieldwork and may include work in a variety of environmental conditions, such as remote or isolated areas, working alone, and in inclement weather (within safe and reasonable limits).

WSP welcomes and encourages applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process.

WSP is committed to the principles of employment equity. Only the candidates selected will be contacted.

WSP does not accept unsolicited resumes from agencies. Full details are available on our website.