Assistant Superintendent - Night Shift

Who We Are

Metrolinx’s GO Expansion program is delivering more GO service across the network, including the capacity to deliver two-way service every 15 minutes or better on core routes. Work is already underway on new track, station renovations and infrastructure upgrades on parts of the Lakeshore, Stouffville, Kitchener and Barrie lines. The investment will generate thousands of new jobs and economic opportunities across the region. The ONxpress Civil Joint Venture is comprised of Aecon Infrastructure Management Inc. and FCC Canada Ltd. This multidisciplinary team leads the delivery of civil and track works, leveraging global expertise to introduce innovative solutions across the GO Transit network.

What You'll Do:

• Support the supervision and coordination of trackwork construction activities, including installation of ballasted and non-ballasted track systems, direct fixation track, special trackwork, and embedded track.
• Assist with daily field operations, helping ensure work is completed safely, in line with technical specifications, quality standards, and project schedules.
• Work closely with the Trackwork Manager, engineering teams, subcontractors, and other discipline leads to help resolve field issues and support constructability discussions.
• Support crews during the installation, testing, and commissioning phases of track systems.
• Participate in site inspections, progress tracking, and preparation of reports for project leadership and stakeholders.
• Help coordinate on-site labor, equipment, and materials to support efficient resource utilization.
• Assist with monitoring subcontractor performance, progress, and compliance with contract requirements.
• Support the maintenance of project documentation, including as-built records, quality documentation, safety observations, and daily construction logs.
• Contribute to the development and updating of construction schedules and trackwork sequencing.
• Coordinate with other infrastructure disciplines (civil, stations, systems, signals, etc.) to support smooth field integration.
• Follow and promote company policies, industry standards, and project-specific procedures related to safety, quality, and environmental compliance.
• Provide guidance and support to junior team members, forepersons, and crews as appropriate.

What You Bring:

• Minimum of 5 of experience in track construction, installation, or maintenance within rail or heavy infrastructure projects.
• Working knowledge of track installation techniques, including alignment, geometry, tamping, welding, and basic quality control practices.
• Exposure to modern track construction equipment, technologies, and industry practices.
• Familiarity with rail transit systems and coordination with other construction disciplines is an asset.
• Ability to support subcontractor coordination and contribute to meeting project schedules while maintaining safety and quality standards.
• Strong communication skills and the ability to work effectively in a team-based environment.
• Ability to read and interpret engineering drawings, technical specifications, and construction plans with guidance.
• Experience working on active construction sites with multiple stakeholders is an asset.
• Basic understanding of construction safety standards (e.g., OHSA, CSA) and a commitment to safe work practices.

Expected compensation for this role is between $115,000.00-135,000.00 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 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.