Senior Mechancial Engineer

Job Description
Senior Mechanical Engineer (P.Eng.) – Building Systems

Locations:  Kitchener, London, Kingston, Guelph, Barrie, Collingwood (Ontario)

Confidential Search | Multiple Opportunities

We are working confidentially with several highly reputable consulting engineering firms that are actively seeking  Senior Mechanical Engineers (P.Eng.)  to join their growing building systems teams across multiple Ontario locations.

These opportunities suit experienced professionals who enjoy technical leadership, client interaction, and contributing to complex, high-quality building projects within a collaborative consulting environment.

The Opportunity
As a Senior Mechanical Engineer, you will play a key role in the design, delivery, and oversight of mechanical building systems across a range of sectors, including commercial, institutional, industrial, and municipal projects. Depending on experience and interest, the role may also include mentorship of junior staff, project management, and involvement in business development activities.

There is flexibility across locations, with some firms offering long-term opportunities to collaborate with  GTA-based teams  as projects and portfolios evolve.

Key Responsibilities

Lead and contribute to the design of mechanical building systems (HVAC, plumbing, fire protection, building automation)

Prepare engineering calculations, reports, and technical documentation

Coordinate with multidisciplinary teams, architects, and clients

Conduct site reviews, condition assessments, and construction support

Provide technical guidance and mentorship to junior engineers

Support project delivery, schedules, and budgets

Contribute to client relationships and proposal efforts as appropriate

Key Requirements

Professional Engineer (P.Eng.) designation in Ontario

Degree in Mechanical Engineering or related discipline

Typically  10+ years  of experience in consulting engineering

Strong knowledge of Ontario Building Code and applicable standards (ASHRAE, CSA, NFPA)

Experience delivering building mechanical systems from concept through construction

Strong communication, leadership, and problem-solving skills

Experience with AutoCAD required;
Revit experience considered an asset

Exposure to energy efficiency, decarbonization, or retrofit projects is an asset

Why Consider These Opportunities

Work with well-established, respected consulting engineering firms

Long‑term career progression and leadership pathways

Collaborative, professional team environments

Competitive compensation and benefits (details shared confidentially)

Flexibility across Ontario offices and future project mobility

How to Apply

To maintain confidentiality, client names and full role details will be shared  only with shortlisted candidates .

If you are a Senior Mechanical Engineer open to exploring new opportunities — or would simply like a confidential discussion about the market — we encourage you to apply or get in touch.

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