Senior Mechanical Engineer

HDR; Toronto; On-site; CAD 123,000 - 173,000; Full time

Job summary

HDR is seeking a Senior Mechanical Engineer in Toronto to join our Building Engineering Services Group. You will lead mechanical design efforts for hyperscale data centres and other facilities, coordinating with multiple disciplines and client teams to deliver robust, sustainable infrastructure.

You will mentor others, manage project delivery, and engage in construction phase activities in a dynamic, employee-owned culture that values innovation and collaboration.

Qualifications

• Bachelor's degree in Mechanical Engineering.
• 10+ years in mechanical system design for commercial or institutional buildings.
• Professional Engineer (PE/P.Eng) license recognized by the local board.
• Experience with AutoCAD, MS Project, and Microsoft Office.

Responsibilities

• Coordinate the mechanical design team through schematic design development and contract document phase.
• Establish meetings and participate in reviews with governing agencies for code compliance.
• Coordinate workload to complete the document on schedule.
• Conduct site work sessions with the Project Manager and other disciplines.
• Review mechanical documents for conflicts with other disciplines.
• Write and edit mechanical specifications; select equipment and systems.
• Coordinate addenda, RFIs, and change orders and implement agreed changes.
• Produce and coordinate multiple projects concurrently.
• Provide construction contract administration as needed.
• Conduct QA/QC on the work of other Mechanical staff.

Skills

Leadership

Project management

Communication

Team coordination

AI productivity tools

Education

Bachelor's degree in Mechanical Engineering

Tools

AutoCAD

MS Project

Microsoft Office

Job description

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we foster a culture of inclusion throughout our company and within our communities, we constantly ask ourselves: What is our impact on the world?
Watch Our Story:' https://www.hdrinc.com/our-story'
Each and every role throughout our organization makes a difference in our ability to change the world for the better. Read further to learn how you could help make great things possible not only in your community, but around the world.
We believe building engineering is more than systems and structures, it’s about powering progress and enabling innovation. As part of HDR’s Building Engineering Services Group, you’ll help design the critical infrastructure that supports the digital age and shapes the spaces where people work, connect, and thrive. From high-performance data centers driving the future of AI to dynamic commercial environments, your work will directly support technological advancement, sustainability, and human experience. We bring together mechanical, electrical, structural, and civil engineering experts to solve complex design challenges with precision, creativity, and collaboration. Whether you're optimizing energy efficiency, integrating resilient systems, or engineering the backbone of next-generation facilities, your contributions will help define the future of the built environment. This isn’t just a job, it’s a chance to lead innovation, engineer impact, and build a legacy of excellence.
Reporting to the Mechanical Section Manager, the Senior Mechanical Engineer is a member of the integrated project team that contributes Mechanical engineering knowledge and analysis during the design phase of our work. The project mix will span a variety of typologies and systems: assignments include hyperscale data centres and collaborations with other business groups within HDR including Water, Resources, and Transportation Business Groups. The role involves working on multiple projects with project sites in various locations. The Mechanical Engineer may be involved in construction contract administration, site reviews on different projects, and condition assessments. The successful candidate will participate in a growing collaborative and integrated engineering team. Common areas for progression and career growth for this position include the Senior Mechanical Engineer role, Technical Specialization, and Project Management.
Responsibilities

• Coordinate the work of the mechanical design team through the schematic design development and contract document phase of a project
• Establish meetings and participate in reviews with various governing agencies for code compliance
• Coordinate workload to complete the document on schedule
• Conduct work sessions at the project site in conjunction with the Project Manager and other disciplines
• Review mechanical documents for areas of conflict with all disciplines
• Write and edit mechanical specifications. Select equipment, mechanical systems and devices
• Coordinate with and assist affected disciplines with addenda, RFIs, and change orders, and take responsibility to incorporate agreed-upon changes into the project documents
• Produce and coordinate several projects concurrently
• Provide construction contract administration as needed
• Conduct QA/QC on the work of other Mechanical Project Engineers, Mechanical Project Coordinators or Mechanical CAD Technicians as needed
• Perform other duties as needed

Preferred Qualifications

• Data Centre, Semiconductor, Healthcare, Laboratory or Sports facilities experience
• Experience and/or interest in sustainable design/LEED desired
• Experience using AI productivity tools to accelerate project workstreams including technical writing, code and specification research, and performance simulation and modelling
• Strong communication and listening skills. Ability to handle multiple concurrent assignments
• Good organizational skills, confident curiosity, strong analytical judgment, leadership potential
• Ability to rigorously audit, validate, and verify all AI-generated outputs (calculations, code interpretations, and routing designs) against core mechanical engineering fundamentals and regulations.

Other Job Details

• Compliance with HDR and, as applicable, contractor safety policies and procedures.
• Potential attendance at job sites to support design and construction activities.

Required Qualifications

• Bachelor's degree in Mechanical Engineering
• A minimum of 10 years in mechanical system design of commercial or institutional buildings
• Requires professional engineering license recognized by the licensing board for the location of the position offered. Example: Professional Engineer (PE or P.Eng) license.
• Strong knowledge of Microsoft Office, MS Project and AutoCAD
• Demonstrated leadership skills, previous team coordination and project management experience
• Previous experience with an architectural/engineering or engineering consulting firm
• An attitude and commitment to being an active participant of our employee-owned culture is a must

What We Believe
HDR is our company. Together, we build on each other's life experiences and perspectives to make great things possible every day. This shapes our collaborative culture, encourages organizational trust and connects us closer to the clients and communities we serve.
Our Commitment
As employee owners, we all have a role in creating an inclusive environment where each of us is welcomed, valued, respected and empowered to bring our authentic selves to work every day.
Our eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ+, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Each group has an executive sponsor and is open to all employees.
We provide a comprehensive benefits package that promotes employee ownership, employee health, performance, and success, which includes medical, dental, vision, short and long-term disability, life insurance, an employee assistance program, paid time away, parental leave, paid holidays, a retirement savings plan with employer match, employee referral bonus and tuition reimbursement. The expected compensation range for this position depends upon skills, experience, education and geographical location. (Stated benefits are for full-time regular positions. Temporary and part-time roles eligible for limited benefits.) The pay range for Toronto. ON: $123,000- $173,000 Primary Location:Canada-Ontario-Toronto Industry:Building Engineering Schedule:Full-time Employee Status:Regular BusinessClass:Building Mechanical Job Posting:Sep 15, 2026
At HDR, we are committed to the principles of employment equity. We are an Affirmitive Action and Equal Opportunity Employer (https://www.hdrinc.com/equal-employment-opportunity-employer). We consider all qualified applicants, regardless of criminal histories, arrest and conviction records.