
Ferrovial Construction Canada Inc. and VINCI Construction Grands Projets are to design, build and finance the Ontario Line Southern Civil, Stations and Tunnel (South Civil) package.
Working together as Ontario Transit Group we are currently mobilizing our design and construction crews, with major works to commence in 2023. 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?
The benefits to Ontario!
Faster, more frequent and reliable access to rapid transit with more than 227,500 people will live within a 10-minute walk of an Ontario Line station
The Subcontract Administrator is responsible for providing discipline-specific coordination and oversight in the administration of subcontracts for engineered equipment, site work, professional services, and permanent plant materials. This role ensures effective management of subcontractor activities while collaborating closely with Project Procurement, Project Controls, Finance, and Operations teams.
Key Responsibilities:
Serve as the discipline lead and subject matter expert, overseeing a portfolio of subcontracts related to that discipline.
Manage the full lifecycle of subcontracts, including engagement with suppliers, vendors, and service providers.
Lead planning activities related to subcontract administration to ensure alignment with project requirements, timelines, and objectives.
Act as the primary contact and accountable representative for subcontract administration within the assigned discipline.
Ensure subcontract handlers adhere to contractual requirements and support them in preparing and issuing contract-related correspondence.
Oversee the preparation, evaluation, and administration of change orders, ensuring timely identification and management of claims.
Monitor subcontract payment provisions and approve progress payments in accordance with contractual and project guidelines.
Address and resolve subcontractor concerns, grievances, and claims within the discipline, ensuring fair and timely outcomes.
Review subcontractor claims and contract documents to ensure compliance with project policies, procedures, and contractual obligations.
Uphold and reinforce subcontracting policies and procedures across the project team to ensure consistency and compliance.
We Offer:
Why OTG?
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. Join us and be part of a team that celebrates our employees, organizes family events, and promotes health and wellness initiatives. 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.
At OTG, we embrace diversity, recognizing that it strengthens us as a team and as a company. We are an equal-opportunity employer, encouraging applications from all interested candidates. We value Indigenous people, racialized people, neurodivergent people, people with disabilities, and individuals from gender and sexually diverse communities with intersectional identities. Reasonable accommodations are available upon request for people with disabilities. If you're ready to be part of our dynamic team in one of the world's most diverse cities, don't wait any longer—apply now!
While we appreciate your interest, only selected candidates will be contacted for interviews. Please note that we do not accept agency submissions.

Ontario Transit Group (OTG) is a joint venture between Ferrovial Construction and Vinci Construction Grands Projets (through their subsidiary JANIN ATLAS) to design, build and deliver the Ontario Line Subway - Southern Civil, Stations and Tunnel work for Metrolinx and Infrastructure Ontario. The south section of the line will join Exhibition Place to the Don Yard portal.
Scope of work for the Ontario Line South Civil design-build-finance package includes:
- A six-kilometre tunnel and associated tunnelling works from Exhibition to Don Yard portal (west of the Don River)
- Groundworks required to build the tunnels and stations; utility and conduit works to prepare for the Rolling Stock, Systems, Operations and Maintenance (RSSOM) mechanical and electrical systems; guideway structures and facilities to prepare for the track structure to be installed by the RSSOM contractor.
- Stations: 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).
When completed with the northern section of the Ontario Line, the new subway line will be a 15.6-kilometre subway line with 15 new stations to the and will connect Exhibition Place all the way to the Eglinton Crosstown LRT at Don Mills Road.