Senior Mechanical Engineering

Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world's most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

AECOM Buildings + Place, is seeking a motivated and skilled Senior Mechanical Engineer to help lead buildings projects (commercial, institutional, light industrial facilities, such as Water and Wastewater Treatment Plants and Sewage Lift Stations) This position can be based out of Markham/Thornhill office with opportunities for hybrid work. Some travel to nearby cities may be required. This role offers opportunities for career growth. 

AECOM Buildings + Places Canada (B+P Canada) is a vibrant and growing fully integrated team spanning architecture, all the building's engineering disciplines, landscape architecture, urban planning, urban design, economics and asset management for design and infrastructure projects. Project assignments may include, although not limited to: Municipal, Commercial, Institutional projects, Justice, Education and Government.  

Major Responsibilities:

• Mechanical Project Lead responsible for design and construction administration.
• Independently perform all the tasks necessary to complete primary design at the early stages of the project and develop the concept to high quality detailed design, co-ordinate with all disciplines.
• Design HVAC, Controls, Plumbing and Fire Protection systems.
• Perform HVAC calculations and analysis using industry programs (Carrier HAP).
• Perform calculations, conduct design drawing reviews, and field investigations.
• Ensure design conforms with all applicable codes and client standards.
• Write/ edit mechanical specifications.
• Travel to construction sites to conduct mechanical inspections and prepare reports. Some out-of-town travel expected.
• Must participate in business development and writing proposals.
• Must be able to prepare written reports and deliver results in a clear manner to technical or non-technical audience
• Working knowledge of the LEED rating system, or other green rating systems.
• Provide guidance to younger engineers.

Minimum Requirements:

In order to be considered for this position, candidates must possess no less than:

• University Degree in Mechanical Engineering six (6) years of experience designing HVAC and plumbing for commercial, institutional, and light industrial facilities.
• Demonstrated equivalency of experience and/or education may be considered.

Preferred Requirements:

• Registered Professional Engineer (P.Eng.) in Ontario.
• 15+ years of experience.
• Strong Consulting Industry background in Canada.
• In-depth knowledge of HVAC (including hydronic systems) and controls.
• Design knowledge in Plumbing and Fire Protection systems.
• Experience in LEED/ Net Zero design preferred.
• Well organized, self-directed work habits with a demonstrated ability to prioritize and schedule tasks managing multiple projects simultaneously in a dynamic environment.
• Very strong communication skills, spoken and written; good presentation skills.
• Able to work independently or as part of a team.
• Able to obtain security clearance for government work.

• Relocation is not available for this position.
• Sponsorship for Canadian employment authorization is not available for this position.

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients' complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2024. Learn more at  

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you'll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you've always envisioned. Here, you'll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.