Principal Mechanical Engineer

Overview

At Mott Mac Donald, we trust our brilliant people to do brilliant things in engineering, management, and development services, supporting multisector project work in over 150 countries. As one of the largest employee‑owned companies in the world, we pride ourselves on our ability to deliver exceptional outcomes through our network of 20,000+ talented consultants. With sustainability and innovation at the heart of all our sectors in North America, including Buildings, Energy, Transportation, and Water.

We believe in empowering our people to excel, learn, and grow, offering diverse opportunities to contribute to career‑defining work. Join us and be part of a collaborative environment where your ambitions are united with ours, and you can truly shape your story.

If you share that vision, even if you don’t meet every requirement listed, we’d still love to hear from you. We value potential and diverse perspectives as much as experience. Let’s explore how we can support your growth and help you take the next step in your career, while contributing to an exciting new chapter for Mott Mac Donald in North America.

We are seeking a qualified and enthusiastic Mechanical Engineering Lead to join our successful Built Environment team in Toronto. The role provides the opportunity to work on an exciting range of projects in both private and public sector, including major framework & infrastructure developments.

• Prepare and review project documentation, including basis of design, technical specifications, procurement specifications, assessment reports, and survey reports, each tailored to the appropriate project stage and covering all aspects of mechanical services.
• Conduct detailed surveys of mechanical systems and equipment to assess existing installations and gather data necessary for recommending new or upgraded design solutions.
• Produce and review mechanical design drawings and detailed calculations for systems such as HVAC, water supply, and drainage.
• Develop accurate fee estimates for project work elements.
• Provide expert advice on energy consumption and utilization, including recommendations to enhance energy efficiency and sustainability.
• Oversee design and project management of building services components, ensuring delivery within agreed timelines and quality standards.
• Ensure adherence to Construction (Design and Management) Regulations, current legislation, and all applicable engineering standards throughout project execution.
• Develop resourcing plans for projects and manage team utilization effectively across the mechanical engineering group.
• Work closely with discipline leads and the Built Environment Lead to shape team strategy and contribute to organizational goals.
• Manage relationships with internal and external stakeholders, ensuring client satisfaction and identifying opportunities for business growth.
• Lead projects from feasibility through completion, providing guidance and technical leadership to support teams.
• Develop resilient infrastructure solutions that leverage digital technologies and tools for enhanced performance.
• Collaborate with other engineering disciplines to deliver integrated project solutions.
• Maximize project profitability by monitoring budgets, anticipating risks, and maintaining transparent communication aligned with client expectations.
• Lead multi‑disciplinary proposals for transit and built environment projects, ensuring competitive and comprehensive submissions.

• Bachelor’s degree in Building Services Engineering with a specialization in Mechanical Engineering.
• Minimum of 15 years managing diverse projects, including those within the built environment and transit sectors. Experience in aviation and nuclear projects is considered a significant asset.
• Must be a registered Professional Engineer (P.Eng) in the province of Ontario or eligible to obtain registration within 12 months of hire.
• Strong understanding of current building codes, regulations, legislation, and standards relevant to building and infrastructure design environments.
• Advanced knowledge and hands‑on experience with industry‑recognized software and mechanical design tools,…