Integration Manager - GO Rail Expansion (ONxpress)

Location: Toronto, ON, CA

Operating Sector: Both Alliances

Come Build Your Career at Aecon!

Aecon delivers some of the most complex and impactful infrastructure projects — from transformative transportation networks to critical energy, industrial and nuclear programs. The projects we build connect communities and power future generations. With deep roots in North America and a strong footprint internationally, Aecon brings global expertise and proudly serves public and private sector clients through its Construction and Concessions segment.

Safety Always is not only our #1 core value – it is the standard that anchors our culture. We believe the most ambitious projects deserve the most committed people. At Aecon, you won’t just build your career — you’ll help build what matters to enable future generations to thrive.

At Aecon, you can count on:

• Safety Always. Our number one core value. The safety of our people, projects, partners, and stakeholders is our priority focus – today and always.


• Integrity. We lead by example, with humility and courage.


• Accountability. We’re passionate about delivering on our commitments.


• Inclusion. We provide opportunities where people feel valued, supported, and empowered to contribute fully.

We deliver infrastructure with purpose, and our people are at the heart of everything we do. Aecon employees are incredibly proud to build some of the most impactful infrastructure of this generation – we call it Aecon Proud .

At Aecon we:

• Ensure you and your family receive the services and benefits needed to support your mental, emotional, and physical well-being.


• Are intentional when it comes to investing in your development. We help you build your career and advance your skills through our Aecon University, tuition reimbursement, and Leadership Programs.


• Are committed to creating work environments focused on mutual respect, teamwork, collaboration, and new ideas, through meaningful initiatives, training, partnerships with Veteran groups, our Aecon Women in Trades and diversity programs, as well as our Employee Resource Groups (ERGs) , to ensure we are building with top talent and harnessing our collective strengths within every aspect of our culture.


• Operate responsibly by managing risk, safety, and environmental considerations across all our projects and surrounding communities.

Our success is built on the passion, expertise, and dedication of our people. Together, we embrace strong execution, innovation, and continuous improvement — values that come to life through the unique talents and collaborative spirit of every team member. If you’re inspired to make a difference through future-building projects, join our best-in-class team.

What is the Opportunity?

ONxpress Transportation Partners (ONxpress) were chosen by Metrolinx and Infrastructure Ontario (IO) to enter the Development Phase of the On-Corridor Works project – the largest project in Metrolinx’s GO Expansion.

Unprecedented in its scale and complexity, this multi-billion-dollar capital program will transform the GO regional rail network with electrification, more frequent service, shorter journey times and a more modernized system for the Greater Toronto and Hamilton Area.

As part of the ONxpress project, Aecon is looking for a qualified Integration Manager to join our team.

What You'll Do Here

• Lead the Requirements Management, Verification & Validation (V&V), Configuration Management, and Interface Management teams to ensure effective systems integration across the project.


• Oversee the management of project requirements, ensuring they are allocated, tracked, verified, and maintained throughout the project lifecycle using established processes and tools, including IBM DOORS.


• Lead the Verification & Validation (V&V) process to ensure project requirements are properly demonstrated and documented throughout design, construction, testing, and commissioning.


• Manage configuration changes by coordinating impact assessments, stakeholder reviews, partner alignment, and client approvals.


• Lead the development, coordination, and maintenance of Interface Coordination Documents (ICDs) to manage internal and external project interfaces.


• Coordinate closely with the Safety Manager to ensure all applicable safety requirements are incorporated into project processes and deliverables.


• Collaborate with design, construction, systems, and project teams to ensure alignment across disciplines and resolve integration issues.


• Lead multidisciplinary integration meetings and facilitate the resolution of cross-functional technical and project issues.


• Identify, assess, and mitigate integration risks while forecasting and tracking project scope changes.


• Monitor project progress, key deliverables, and design milestones, recommending schedule adjustments where required.


• Develop, monitor, and report on project performance metrics, providing regular status updates to project leadership and management.


• Prepare and review technical reports, purchase specifications, subcontract documentation, and business correspondence related to the integration function.


• Provide technical leadership and project management support as required.


• Perform other duties and responsibilities as assigned by the Supervisor/Manager.


• Drive an inclusive culture to promote equity, welcome different perspectives, and enable career progression by fostering a sense of belonging.

What You Bring to the Team

• Completion of a diploma or degree in Engineering, or a combination of education, training, and equivalent experience.


• Minimum 8–10 years of experience delivering signalling, major infrastructure or rail projects.


• Minimum 5 years working in systems safety and assurance roles


• Minimum 3 years of experience leading systems integration, requirements management, interface management, configuration management, or a related discipline on complex infrastructure projects.


• Experience working within Design-Build, P3, or other major infrastructure delivery models is considered an asset.


• Experience using requirements management tools such as IBM DOORS is considered a strong asset.


• Proficiency with Microsoft Office Suite and other project management and collaboration tools.


• Proficiency with ACC & Aconex is considered an asset


• Strong analytical, organizational, problem-solving, interpersonal, and written and verbal communication skills.


• Proven ability to build collaborative relationships and influence cross-functional teams across multiple stakeholders.


• Ability to work independently while coordinating the efforts of multidisciplinary teams to achieve project objectives.


• Be a champion of inclusion and diversity.

Reason for vacancy: Backfill

The expected pay range for this role is $130,000 - $160,000 per year

Individual pay is determined based on several factors, including work location, education, experience, unique skills and job conditions. Other considerations may include certifications, specialist training, and the complexity or scope of the role

Aecon fosters diversity, inclusion and belonging within and across our organization. We welcome all to apply including, women, visible minorities, Indigenous peoples, persons with disabilities, and persons of any sexual orientation or gender identity.

We are committed to adhering to the objectives and requirements outlined in the Accessible Canada Act (ACA), and to meeting the accessibility needs of persons with disabilities in a timely manner. Through the implementation of the requirements of the ACA and its applicable regulations, appropriate accommodations will be provided upon request throughout the interview and hiring process.

As part of our commitment to fair and transparent hiring practices, Aecon 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 Aecon’s AI Usage Policy. All final decisions are made by qualified Aecon team members.