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Senior Mechanical Engineer

Job in Markham, Ontario, Canada
Listing for: AECOM
Full Time position
Listed on 2026-03-01
Job specializations:
  • Engineering
    Building Services Engineer, Environmental Engineer, Mechanical Engineer, HVAC Tech / Heating Engineer
Job Description & How to Apply Below
Job Description

AECOM is seeking a motivated and skilled Senior Mechanical Engineer to support the design and construction of buildings within the Buildings + Places (B+P) business line. This opportunity can be based out of our Markham, Mississauga, or Pickering offices, with opportunities for hybrid work available. This is a new role for the team.

This is an exciting opportunity for a Senior-level Mechanical Engineer with extensive experience in building systems to serve as the Technical Lead and Job Captain for the Mechanical Discipline on multi-discipline projects for the Defence and Transportation Market Sectors. The role also involves mentoring junior staff, contributing to technical excellence, and supporting project delivery across a wide range of building typologies.

About AECOM Buildings + Places Canada (B+P Canada):
B+P Canada is a vibrant and growing fully integrated team spanning architecture, all building engineering disciplines, landscape architecture, urban planning, urban design, economics, and asset management for design and infrastructure projects.

Major Responsibilities

As a Senior Mechanical Engineer, you will:

  • Lead the design of Plumbing, Fire Protection, and HVAC systems for complex building projects.
  • Serve as the Technical Lead for the Mechanical Discipline, providing specialized technical input and oversight on studies, designs, and construction documentation.
  • Review and prepare HVAC design concepts, layouts, and calculations, ensuring compliance with project requirements and industry standards.
  • Develop plumbing system layouts, including domestic water distribution, sanitary drainage, venting, storm drainage, and specialty systems such as oil grit interceptors and trench drains.
  • Provide fire suppression indicative design, including wet/dry sprinkler systems, standpipes, clean agent systems, and specialized suppression systems for unique applications (e.g., hangars).
  • Oversee Building Automation System (BAS) design and ensure seamless integration with other building systems.
  • Perform quality control reviews of design calculations, drawings, and technical specifications to ensure high-quality deliverables.
  • Prepare and review technical specification sections and contribute to the development of engineering budgets and schedules.
  • Collaborate with interdisciplinary teams to ensure seamless coordination across all building systems.
  • Mentor and provide guidance to junior engineers and technicians, fostering a culture of continuous learning and technical excellence.
  • Actively participate in construction administration, including reviewing submittals, responding to RFIs, and conducting site visits to ensure project compliance with design intent.
  • Support the preparation of technical reports and deliver results in a clear and concise manner to both technical and non-technical stakeholders.

Key Technical Expertise

The ideal candidate will have expertise in:
HVAC Design and Construction Administration:

  • Hydronic heating and cooling systems.
  • Duct air distribution and terminal/central airside equipment selection.
  • Net-zero heating and cooling solutions.
  • General HVAC best practices.

Plumbing Design and Construction Administration:

  • Plumbing fixture selection and optimization of domestic water distribution.
  • Sanitary and storm drainage systems.
  • Specialty drainage systems (e.g., oil grit interceptors, trench drains).
  • Domestic hot water production systems.

Fire Suppression Design and Construction Administration:

  • Wet and dry sprinkler systems.
  • Standpipes and clean agent gas/aerosol systems.
  • Specialized fire suppression systems for unique applications.

Building Automation Systems (BAS):

  • Design and integration of BAS for efficient building operations.
Qualifications

Minimum Requirements:

  • Bachelor’s Degree in Mechanical Engineering.
  • Minimum 6 years of experience in designing HVAC, plumbing, and fire protection systems for commercial, institutional, and light industrial facilities.
  • Demonstrated equivalency of experience and/or education may be considered.

Preferred Requirements:

  • Professional Engineering (P.Eng.) license is strongly preferred.
  • PWGSC/PSPC - Level II Secret Clearance preferred for Federal Projects.
  • Proficiency in…
Position Requirements
10+ Years work experience
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