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ONxpress

Assistant Interface Manager

Toronto, ON, Canada

Expected compensation for this role is between $100,000.00 - $130,000.00 annually. · Full-time

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Job details

Pay: Expected compensation for this role is between $100,000.00 - $130,000.00 annually.
Job type: Full-time
Apply by: Dec 5, 2026
Posting language: English
Posted: Nov 5, 2026

Original job description

Who We Are

The ONxpress Civils Contractor General Partnership, a partnership between FCC Canada Limited and Aecon Infrastructure Management Inc., is a multidisciplinary Civils Joint Venture (CJV) team with global expertise in delivering innovative solutions for both railway and civil construction projects. Working under Alliance agreements with Metrolinx, the team is helping to modernize railway construction across the GO Transit network.

An Alliance framework, which is relatively new in Canada, is a collaborative partnership between the owner and contractor, who work together with a best-for-project mindset. By streamlining decision making, the Alliance helps ensure that high-quality work is delivered, certified, and transferred in a progressive, transparent, and risk-managed manner.

The Alliance operates with a core focus on safety, efficiency, and sustainability, while fostering strong relationships with stakeholders and rights-holders and contributing positively to local communities as a good neighbour. Through this collaborative approach, the Alliance is helping drive the modernization of key sections of the rail network as part of the GO Expansion Program.

If you're passionate about making a difference and want to be part of a progressive and modern way of working, we want to hear from you.

What You'll Do:

As an Assistant Interface Manager, you will support the Interface Lead in managing multidisciplinary design coordination and technical interfaces across civil, structural, and railway systems disciplines. You will lead interface reviews, coordinate technical resolutions, and work closely with design and construction teams to ensure project requirements and delivery objectives are met.

Your responsibilities include:

Oversee multidisciplinary design coordination and interface management activities across Civil, Structural, Systems, and Construction teams, ensuring technical issues and design conflicts are addressed in a timely manner.
Manage the interface coordination process across assigned project packages, overseeing interface requirements, ICD development, interface registers, and the resolution of outstanding technical issues.
Lead the resolution of complex multidisciplinary design and interface issues, working with discipline leads and subject matter experts to evaluate proposed solutions and address impacts on project delivery.
Oversee design and interface deliverables, identify critical dependencies and potential risks, and coordinate with relevant teams to address impacts on design development, construction sequencing, and project schedules.
Provide technical guidance to coordinators, lead key stakeholder discussions, and support the Interface Lead in prioritizing activities, resolving escalated issues, and reporting progress to management.
Supporting the Interface Manager in tracking coordination progress, documentation, and compliance with internal governance and project procedures.
Assisting in coordinating interface reviews, workshops, and technical meetings with internal teams and external partners.
Help, manage and maintain design records, safety documentation, and project deliverables.
Monitor and report all the submission status and follow up successful delivery.
Ensure alignment between design, construction, and operations in coordination with subject matter experts.
Lead important technical meetings and define actions by schedule
Supporting the Interface Manager with day-to-day activities.
Supporting the review and coordination of multi-disciplinary design packages for railway systems, rolling stock, and infrastructure.
Collaborating with engineers and discipline leads to ensure consistency and compliance with project standards.
Promoting a culture of safety, quality, and collaboration within the project team.

What will you Bring:

Bachelor’s degree in civil engineering, Systems Engineering, or a related engineering discipline. Professional Engineer (P.Eng.) designation or eligibility for registration in Ontario is considered an asset.
Minimum 7 years of relevant engineering experience on major infrastructure projects, including at least 4 years in multidisciplinary design coordination, technical interface management, or related engineering leadership roles. Rail or transit experience is preferred.
Demonstrated experience managing technical interfaces, including Interface Control Documents (ICDs), interface registers, multidisciplinary design reviews, and resolution of complex design and construction issues.
Strong understanding of engineering design development, construction sequencing, and integration between civil works and railway systems, with proven ability to lead technical discussions and coordinate multiple stakeholders.
Experience in railway interface activities and processes.
Strong organizational skills and attention to detail.
Excellent communication and stakeholder coordination skills.
A proactive, learning-oriented mindset with the ability to work both independently and collaboratively.

Expected compensation for this role is between $100,000.00 - $130,000.00 annually. Base salaries are determined according to multiple factors including skills, experience and potential impact on the role. Internal and external competitiveness are also taken into consideration. In addition to base salary ONxpress also offers a comprehensive medical and dental program, RRSP with company matching and the potential to participate in our discretionary, performance based bonus program.

This role is a newly created position.

As part of our commitment to fair and transparent hiring practices, ONxpress may use artificial intelligence (AI) tools to assist in screening and reviewing candidates. These tools are applied responsibly and in accordance with applicable privacy laws and ONxpress’ AI Usage Policy. All final decisions are made by qualified ONxpress team members. Connect with us! Learn more about our project here and follow us on LinkedIn for frequent updates.

This position is with ONxpress Civils (“CJV” aka the Design & Construction team); the project segment responsible for the modernization and modification of the key area network, including countless innovations in the way the regional rail infrastructure is built.

We value diversity and encourage all qualified individuals to apply, regardless of whether they meet 100% of the qualifications listed. If you believe you have the skills and passion to excel in this role, we welcome your application and the opportunity to consider you for the position.

We are an Equal Employer. Should you need any accommodation through the recruitment process, please contact cjv-talentacquisition@onxpress.com.

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More about this job

Responsibilities

Coordinate multidisciplinary design and technical interfaces across civil, structural, railway systems, and construction teams, including managing interface requirements, reviews, deliverables, and resolution of complex issues. Lead technical discussions and stakeholder coordination, track submissions and progress, and support alignment among design, construction, and operations while promoting safety, quality, and collaboration.

Requirements

A bachelor’s degree in civil engineering, systems engineering, or a related engineering discipline is required; a Professional Engineer designation or eligibility for Ontario registration is an asset. Candidates should have at least seven years of relevant major infrastructure engineering experience, including four years in multidisciplinary design coordination or interface management, with rail or transit experience preferred.

Skills

Multidisciplinary Design Coordination
Interface Control Documents
Interface Registers
Design Reviews
Technical Issue Resolution
Stakeholder Coordination
Railway Systems Integration
Construction Sequencing
Project Scheduling
Risk Management
Technical Meeting Leadership
Documentation Management
Safety And Quality
Communication
Organizational Skills

Benefits

Medical And Dental Program
RRSP With Company Matching
Performance-Based Bonus Program

Visa sponsorship

Not detected in the job text

Keywords

Civil Engineering
Systems Engineering
Railway Construction
Transit Infrastructure
GO Expansion Program
Multidisciplinary Design Coordination
Interface Control Documents
Interface Registers
Civil Works
Structural Engineering
Railway Systems
Rolling Stock
Design Development
Construction Sequencing
Design Reviews
Stakeholder Coordination
Technical Issue Resolution
Project Scheduling
Risk Management
Safety Documentation
Project Governance
Operations Integration
Professional Engineer
Alliance Agreements

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