Site Resident Mechanical Engineer, Buildings

WSP in Canada; Toronto; On-site; CAD 81,900 - 112,800; Full time

Benefits offered by this job

Flexible work arrangements

Professional development opportunities

Community-focused projects

Job summary

WSP in Canada is seeking a Site Mechanical Engineer for major infrastructure projects in downtown Toronto. The role focuses on delivering mechanical design and engineering services while acting as the mechanical engineering representative during construction. Candidates should have a Bachelor’s degree in Mechanical Engineering, P.Eng. registration, and 7–10 years of relevant experience. WSP offers competitive compensation and opportunities for professional growth in a supportive environment.

Qualifications

• 7–10 years of experience designing mechanical systems for projects.
• Strong knowledge of applicable codes and standards (OBC, CSA, etc.).
• Experience providing construction administration and field engineering.

Responsibilities

• Deliver mechanical design and site engineering services for projects.
• Lead design and implementation of mechanical systems.
• Conduct regular site visits to verify installations.

Skills

Mechanical design

Site engineering

Construction administration

HVAC systems

Leadership

Education

Bachelor’s degree in Mechanical Engineering

P.Eng. registration with PEO

Tools

HAP/Tracer

Mechanical design software

Job description

Job Description

What if you could redefine what’s possible? With us, you can. You want Purpose. Growth. Opportunity. People who get it. We are the home of ambitious, passionate, and innovative world shapers.

With an unmatched breadth and depth of engineering, advisory and science‑based expertise, our global minds unite to power local solutions.

We are pathfinders and impact makers. We are Visioneers. We are WSP.

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.

Your Impact

• 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.

The Skills That Set You Apart

• A Bachelor’s degree in Mechanical Engineering and P.Eng. registration with PEO.
• 7–10 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 (asset).
• Confidence working in active construction environments with frequent site presence.

Why Choose WSP?

• Proudly Canadian – we are a Top 100 Employer in Canada for 2026.
• A global community of brilliant minds – your next idea, mentor, or opportunity is always within reach.
• Limitless opportunities start here. Whether it’s across the country or around the globe, we help you tailor your role to match your ambition – because your growth drives ours.
• Flexible work, real balance – we recognize the importance of balance in our lives and encourage you to prioritize the balance in yours.

Compensation

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.

Ready to Shape the Future?

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.

About Us

At WSP, we exist to shape communities to advance humanity. It’s why we bring people together who are wired to solve complex challenges – engineers, scientists, advisors, and technical experts who are driven by a common passion – to redefine what’s possible and shape what comes next. We are Visioneers. As one of the world’s leading professional services firms, we partner with clients across transportation, infrastructure, environment, buildings, energy, water, mining and metals.

We pair deep local knowledge with global insights to pioneer solutions designed to leave a lasting, positive impact.

We empower our people to collaborate across disciplines, challenge the status quo, and shape a career with purpose.

Health and Safety is a core paramount value of WSP. Given the importance of keeping one another safe, 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 here. Some safety‑sensitive positions involve fieldwork and may include work in a variety of environmental conditions.

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 here.