Engineering Specialist.

None Full-Time

Apply on Metrolinx → ♡ Save to shortlist

??% CV Match

Engineering Specialist: our view in 3 lines...

The Role:Provide technical leadership on diesel powertrain reliability and performance for a public transit bus and locomotive fleet.
The Person:Lead technical investigations and root cause analysis of diesel powertrain and related vehicle failures, develop and validate corrective actions with OEMs, and provide technical guidance to maintenance and operations teams.
Requirements:University degree in Engineering or equivalent, experience with heavy-duty diesel vehicles, emissions aftertreatment systems, powertrain components, diagnostic tools, Lean or Six Sigma knowledge, and familiarity with Transport Canada MTO APTA rules and Cummins or EMD platforms.

About the role

Metrolinx is connecting communities across the Greater Golden Horseshoe. Metrolinx operates GO Transit and UP Express, as well as the PRESTO fare payment system. We are also building new and improved rapid transit, including GO Expansion, Light Rail Transit routes, and major expansions to Toronto’s subway system, to get people where they need to go, better, faster and easier. Metrolinx is an agency of the Government of Ontario.

At Metrolinx, equity, diversity and inclusion are essential to living our values of serving with passion, thinking forward and playing as a team.

This role is an in‑office position based at our 20 Bay Street location. Our team is highly collaborative, and much of our work benefits from in‑person co‑creation, relationship‑building, and hands‑on partnership with leaders across the organization.

This is an incredibly exciting time to join our Engineering Safety Division (ESD) Bus Fleet team. We are receiving the next generation of highway coaches with the latest emissions-compliant technology and are advancing the procurement of a new double-decker fleet. We are seeking an Engineering Specialist, Diesel Powertrain to provide technical leadership on the reliability, performance, and continuous improvement of our diesel bus fleet. Working closely with Bus Fleet Maintenance, Operations, Reliability Engineering, and Original Equipment Manufacturers (OEMs), this role will investigate complex vehicle issues, develop practical engineering solutions, and support the long-term performance of the fleet.

As part of a multidisciplinary engineering team, this position also offers the opportunity to collaborate across the organization in support of diesel-powered rail locomotive systems, providing technical expertise on complex engine and powertrain issues

The successful candidate will be the technical subject matter expert for diesel powertrain systems and related vehicle components. They will investigate recurring fleet issues, identify root causes, collaborate with OEMs to develop permanent corrective actions, and support the introduction of new vehicle technologies. This role combines hands-on technical problem solving with engineering analysis to improve fleet reliability, safety, and maintainability.

The ideal candidate combines extensive hands-on heavy vehicle experience with strong technical problem-solving skills. You have experience in transit bus, highway coach, heavy truck, commercial fleet, or diesel rail environments, and are comfortable investigating complex vehicle issues, working alongside maintenance teams, and partnering with OEM engineering groups to develop sustainable, long-term technical solutions.

What will I be doing?

Lead technical investigations into complex diesel powertrain, emissions aftertreatment, cooling, driveline and related vehicle system failures.
Work directly with OEM engineering teams to develop, validate and implement corrective actions for recurring fleet issues.
Perform root cause failure analysis using field observations, maintenance history, diagnostic data and engineering principles.
Evaluate proposed design changes and replacement components to improve reliability, maintainability and lifecycle performance.
Make recommendations for the installation and long-term viability of field-tested replacement components or sub-systems
Investigates age, maintenance, and design-related performance trends
Provide technical guidance to maintenance staff during troubleshooting of complex vehicle issues.
Review requests and operational feedback from Bus Fleet Maintenance and Operations to assess the feasibility and technical impacts of modifications to existing and new fleet equipment.
Monitors quality control processes and procedures undertaken

What Skills and Qualifications Do I Need?

University degree in Engineering, Engineering Technology, or a related technical discipline, or an equivalent combination of education and extensive heavy vehicle industry experience.
Extensive experience diagnosing, maintaining or supporting heavy-duty diesel vehicles such as transit buses, highway coaches, heavy trucks or commercial fleet equipment.
Experience working with Original Equipment Manufacturers (OEMs) to resolve technical issues, develop product improvements or implement engineering changes would be considered a strong asset.
Strong working knowledge of heavy-duty diesel engines, emissions aftertreatment systems, cooling systems, fuel systems, powertrain components and vehicle diagnostics.
Strong understanding of heavy vehicle mechanical and electrical systems, diagnostic tools, electronic service information and testing equipment.
Knowledge of continuous improvement processes like Lean or Six Sigma would be considered an asset.
Working knowledge of rules and regulations established by Transport Canada (TC), Ministry of Transportation of Ontario (MTO) and the American Public Transit Association (APTA) would be considered an asset.
Registration or eligible to be registered as a P.Eng. is considered an asset.
Registration or eligible to be a licensed 310T technician considered an asset.
Experience supporting heavy-duty diesel powertrain systems in transit bus, highway coach, commercial fleet, heavy truck, or rail locomotive applications is considered an asset. Familiarity with Cummins (L9, X12, QSK19, QSK60), EMD 710, or equivalent heavy-duty diesel engine platforms is preferred

Don’t Meet Every Requirement?

If you’re excited about working with Metrolinx but your past experience doesn’t quite align with every qualification of this posting, we encourage you to apply. You just might be the right candidate for this or other roles. We are always looking for great talent to join our team.

We invite all interested individuals to apply and encourage applications from members of equity-deserving communities, including those who identify as Indigenous, Black, racialized, women, people with disabilities, and people with diverse gender identities, expressions and sexual orientations.

Accommodation:
Metrolinx is an equal opportunity employer and committed to a diverse and inclusive workforce. We are also committed to offering reasonable accommodation to job applicants in accordance with applicable legislation. If you require assistance or an accommodation at any point during the hiring process, please contact us at: 416-202-5601 or email hr.recruitment@metrolinx.com.

Application Process:

All applicants must be legally entitled to work in Canada. Metrolinx will be using email to communicate with you for all job competitions. It is your responsibility to include an updated email address that is checked daily and accepts emails from unknown users. As we send time-sensitive correspondence, we recommend that you check your email regularly. If no response is received, we will assume you are no longer interested in pursuing the opportunity. Please be advised that a Criminal Record Check may be required of the successful candidate.

For Internal applicants, with the recent implementation of the Internal Mobility Policy, the internal recruitment process has changed for non-union roles. Candidates must be in their current role for 12 months prior to applying for another role and each applicant must be in good standing (not participating in a Performance Improvement Plan). Please review all provisions of the policy before submitting your application.

Should it be determined that any background information provided is misleading, inaccurate or incorrect, Metrolinx reserves the right to discontinue with the consideration of your application.

We thank all applicants for their interest, however, only those selected for further consideration will be contacted.

WE ARE AN EQUITABLE AND INCLUSIVE EMPLOYER.

Published July 8, 2026

Location Toronto, Canada

Category None

Job Type Full-Time

Apply on Metrolinx →