Mechanical Manager (Construction

Ferrovial Construction Canada Inc. and VINCI Construction Grands Projets are undertaking the design, build, and finance the Ontario Line Southern Civil, Stations, and Tunnel (South Civil) package.
As Ontario Transit Group, we are now mobilizing our design and construction crews, with major works. The South Civil contract is anticipated to be completed in 2030.
The project will strengthen Ontario’s economy by supporting an estimated 1,500 jobs at the peak of construction.
What is the project?
A six-kilometer tunnel and associated tunnelling works from Exhibition to Don Yard portal (west of the Don River).
One above-ground station to be integrated with the existing GO Transit Exhibition Station.
Two underground stations to be integrated with the existing TTC Osgoode and Queen subway stations.
Four new underground stations (King/Bathurst, Queen/Spadina, Moss Park, Corktown).

Improve the quality of life for commuters by reducing daily travel time.
Up to 57,000 more jobs accessible by transit (in 45 minutes or less) for Toronto residents.
Economic and community growth along the future transit line and thousands of job opportunities annually during construction.
The TVS/FLS Mechanical Manager is responsible for leading the design, coordination, and delivery of Tunnel Ventilation Systems (TVS) and Fire & Life Safety (FLS) systems across complex transit and infrastructure projects. This role provides technical oversight of multidisciplinary engineering teams, ensuring all designs, calculations, and specifications meet safety, performance, and client standards.
This role drives the development and review of Bills of Quantities, conducts rigorous quality checks, and leads stakeholder engagement with clients, consultants, and contractors to resolve design and construction issues.
Technical Leadership & Design Oversight
Lead and oversee the development and execution of Tunnel Ventilation Systems (TVS) and Fire & Life Safety (FLS) designs.
Perform comprehensive technical reviews and due‑diligence checks of designs prepared by subconsultants or clients to ensure compliance with Client output specifications and adherence to safety and performance standards.
Review and validate engineering specifications and calculations, including fire detection, alarm systems, fire suppression, tunnel ventilation, and smoke management for tunnels and stations.
Contribute to the development of design optimizations and technically robust alternatives to enhance system performance and cost efficiency.
Quantity Development & Quality Assurance
Develop Bills of Quantities, including quantity generation for TVS/FLS components and verification of quantities prepared by subconsultants.
Conduct rigorous quality checks to ensure accuracy, completeness, and alignment with project requirements.
Project Coordination & Stakeholder Management
Coordinate and lead project-specific meetings with clients, engineering consultants, contractors, and other stakeholders to address and resolve TVS/FLS design and construction-related issues.
Work collaboratively in a multidisciplinary project environment, maintaining regular communication with the broader project team to identify needs, evaluate alternatives, and ensure integration of TVS/FLS requirements across all disciplines.
Schedule Management & Deliverable Oversight
Manage workload distribution and support timely completion of deliverables to meet project deadlines.
Track progress against the design schedule, reviewing and approving tasks to ensure on-time submissions and adherence to project milestones.
Bachelor’s Degree in Civil, Mechanical, Industrial or Architectural Engineering or related field.

• MS degree in Civil or Mechanical Engineering or related field preferred.
• Eng is an asset.
• 5-7 years of professional experience in Tunnel Ventilation System and/or Fire Life Safety design.
• Knowledge and practical experience in Autodesk Environment (Autocad, Revit, BIM360, etc.) is an asset.
• Knowledge and practical experience in 1D and 3D computational fluid modelling software (CFD) preferred.
• Experience with fluid mechanics and fire or ventilation modelling.
• Previous experience managing external or internal teams.
• Demonstrated qualities of leadership, proactivity and commitment.
• eagerness to learn and apply engineering skills to develop creative problem-solving designs/ideas.
• Competitive Salary
• Disability Insurance
• Dental Insurance
• Extended medical insurance
• (Discretionary Bonus

Welcome to Ontario Transit Group (OTG), located in the heart of Downtown Toronto, where diversity and passion collide. As we work on the groundbreaking Ontario Line project, we prioritize fostering a positive culture. Our commitment to personal and professional growth means annual performance reviews, salary increases, comprehensive health benefits, generous RRSP matching, industry education support, and career development opportunities.
OTG uses artificial intelligence (AI) tools as part of the applicant screening process. At OTG, we embrace diversity, recognizing that it strengthens us as a team and as a company. We value Indigenous people, racialized people, neurodivergent people, people with disabilities, and individuals from gender and sexually diverse communities with intersectional identities. OTG is committed to fostering an inclusive, equitable, and accessible environment.