Multi-Service Vehicle Mechanic

The MSV Mechanic is responsible for maintaining diagnosing and repairing MultiService Vehicles (MSVs) used to support Tunnel Boring Machine (TBM) operations on largescale tunnelling projects. This role ensures the reliability safety and efficiency of MSVs that transport segments materials equipment and personnel throughout the underground tunnel system. The mechanic works closely with operators tunnel supervisors and maintenance teams in a demanding underground environment.

Key Responsibilities

• Inspect troubleshoot and repair MSV mechanical systems including engines power units steering systems transmission assemblies and drivetrain components.
• Maintain and service hydraulic pneumatic compressedair and electrical systems found in MSV equipment.
• Perform scheduled preventive maintenance lubrication adjustments and component replacements to ensure equipment reliability in continuous tunnelling operations.
• Diagnose faults using mechanical hydraulic and electrical testing tools; interpret error indications and technical manuals.
• Support MSV operators with troubleshooting equipment configuration and resolving operational performance issues.
• Document repairs service reports and parts usage following maintenance protocols.
• Conduct preuse and postuse inspections on MSVs checking braking systems safety interlocks steering modules wheel/bogey assemblies and loadbearing components.
• Ensure MSVs remain compliant with tunnelling safety regulations ventilation requirements and confinedspace operational rules.
• Assist with MSV trailer coupling/uncoupling shunting alignment and setup activities during transport shifts.
• Coordinate with TBM logistics teams to ensure vehicle availability and reliability for continuous transport cycles.
• Follow Ontario OHSA tunnelspecific safety procedures air/gas monitoring guidelines emergency response expectations and underground hazard controls.
• Maintain tidy and safe underground work areas including equipment bays maintenance stations and tunnel access routes.

Qualifications :

• Completion of a 34year apprenticeship program in industrial mechanic/millwrighting or 5 years of experience in industrial machinery repair with industry training courses.
• Industrial Mechanic (Millwright) trade certification (voluntary but preferred in Ontario).
• Additional mechanical or electrical equipment certifications considered an asset.
• Strong knowledge of MSV components and systems including power units hydraulic systems electrical systems transmission/drives chassis and bogeys/wheel modules.
• Ability to read technical manuals schematics and equipment specifications.
• Skilled in diagnostics mechanical troubleshooting and heavyequipment repair.
• Familiarity with underground and tunnelling operations confinedspace work and ventilationdependent environments.
• Understanding of underground rescue procedures emergency protocols and airmonitoring principles (asset but often required).
• Ability to work underground in confined spaces elevated noise dust and variable temperatures.
• Physically capable of lifting climbing crawling and performing repairs in restricted spaces.
• Strong communication and teamwork skills to coordinate with operators and tunnel crews.

Additional Information :

We Offer: 

• This is a unionized role; therefore the salary will be the according to the Schedule and Group per the Collective Bargaining Agreement.

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. OTG is committed to fostering an inclusive equitable and accessible environment. If you require accommodation during the selection process please contact  

OTG uses artificial intelligence (AI) tools as part of the applicant screening process. However applications will also be reviewed by a member of our Recruitment team to ensure a fair and thorough assessment.

If youre ready to be part of our dynamic team in one of the worlds most diverse cities dont wait any longerapply now!

While we appreciate your interest only selected candidates will be contacted for interviews. Please note that we do not accept agency submissions.

Remote Work :

No

Employment Type :

Intern