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Trillium Rail Partners

Builds rail stations, tracks and transit systems

Senior Subcontracts Administrator - Linewide

Contract ManagementConfirmed live in the last 24 hours
Full-timeMississauga, ON, CanadaNo salary listedIn-person

About the Job

Requirements

  • A bachelor's degree or diploma in Business Administration, Construction Management, Engineering, Quantity Surveying, Commerce, or a related discipline.
  • At least 8–10 years of progressive experience in subcontract administration, contract administration, commercial management, or procurement within major construction or infrastructure projects.
  • Demonstrated experience administering complex subcontracts on major infrastructure, transit, rail, heavy civil, or transportation projects.
  • Strong experience with change management, progress payments, contractual correspondence, claims, and subcontract close-out.
  • Experience working with large, multidisciplinary construction and engineering teams.
  • Strong commercial and contractual acumen.
  • Excellent negotiation and stakeholder management skills.
  • Strong analytical and problem-solving capabilities.
  • Excellent written and verbal communication skills, including preparation of formal contractual correspondence.
  • High level of attention to detail and accuracy.
  • Ability to interpret complex contractual documents and identify potential risks.
  • Strong organizational and time-management skills.
  • Ability to manage multiple subcontract packages and competing priorities in a fast-paced project environment.
  • Ability to exercise sound judgment and maintain confidentiality when handling commercially sensitive information.
  • Proficiency with Microsoft Office, particularly Excel and Word.

Responsibilities

  • Lead the day-to-day administration of assigned linewide subcontracts from award through final completion and close-out.
  • Review and interpret subcontract terms and conditions to ensure contractual obligations, deliverables, notices, and commercial requirements are understood and administered.
  • Maintain comprehensive subcontract files, registers, correspondence logs, and commercial records.
  • Monitor subcontractor compliance with contractual requirements, including insurance, bonding, reporting, deliverables, milestones, and other obligations.
  • Provide guidance to project teams regarding subcontract administration processes and contractual requirements.
  • Support the administration of complex subcontracts involving major infrastructure, rail, systems, construction, and linewide scopes.
  • Identify contractual risks, obligations, and potential commercial issues and escalate them to project and commercial leadership.
  • Support the preparation and administration of contractual notices, correspondence, instructions, and other formal communications.
  • Maintain accurate records to support the project's contractual position.
  • Work with project teams to ensure contractual issues are identified and addressed in a timely manner.
  • Lead or support the administration of subcontract changes, variations, change orders, and amendments.
  • Review and coordinate supporting documentation for proposed changes, including scope descriptions, cost submissions, schedules, and technical information.
  • Track change requests and maintain change registers.
  • Coordinate with construction, engineering, project controls, and commercial teams to assess the scope, schedule, and cost impacts of changes.
  • Support negotiation and resolution of subcontract changes in accordance with delegated authority and project procedures.
  • Ensure approved changes are accurately incorporated into subcontract records and commercial forecasts.
  • Coordinate the review and processing of subcontractor progress payment applications.
  • Verify payment submissions are supported by appropriate documentation and align with contractual requirements and verified progress.
  • Coordinate with construction and project controls teams to confirm progress, milestones, and completion status.
  • Support the preparation and processing of payment certificates and related documentation.
  • Track payments, commitments, and outstanding commercial matters.
  • Support the identification, assessment, and administration of subcontractor claims, notices, and potential disputes.
  • Maintain records of claim-related correspondence, supporting documentation, and key contractual events.
  • Coordinate with commercial, legal, project controls, and project management teams to support claim analysis and response development.
  • Assist in preparing contractual responses and documentation supporting dispute avoidance and resolution.
  • Identify issues that could develop into claims or disputes and support timely mitigation.
  • Support procurement and award for assigned subcontract packages.
  • Coordinate with procurement and technical teams during tendering, bid evaluation, clarifications, and negotiations.
  • Assist with preparing and reviewing subcontract documents, scopes of work, commercial schedules, and contract exhibits.
  • Support subcontract award recommendations and approval documentation.
  • Ensure executed subcontract documents are controlled and communicated to relevant project teams.
  • Work closely with Linewide Construction, Systems, Design, Quality, Project Controls, and Procurement teams to support subcontract delivery.
  • Act as a key commercial interface between TRP and assigned subcontractors.
  • Participate in subcontractor meetings and support resolution of contractual and commercial issues.
  • Coordinate with internal stakeholders to align technical, schedule, quality, and commercial obligations.
  • Support management of interfaces between multiple subcontract packages and project workstreams.
  • Maintain and report subcontract status, commitments, changes, payments, claims, and key commercial risks.
  • Prepare subcontract administration reports, dashboards, and management updates.
  • Support cost forecasting and reporting by providing accurate subcontract commitment and change information.
  • Coordinate with project controls teams to align subcontract information with project budgets and forecasts.
  • Track key contractual dates, notice periods, deliverables, and milestones.
  • Lead or support commercial and administrative close-out of assigned subcontracts.
  • Ensure final changes, claims, payment obligations, warranties, releases, and close-out requirements are addressed.
  • Coordinate collection and verification of required close-out documentation.
  • Maintain complete and auditable subcontract records through final completion.

Desired Qualifications

  • Experience working within a progressive design-build environment is strongly preferred.
  • Experience with ERP, procurement, contract management, project controls, or document management systems is an asset.

About the Company

Trillium Rail Partners

Builds rail stations, tracks and transit systems

Trillium Rail Partners designs and builds transit infrastructure for Metrolinx's Eglinton Crosstown West Extension in the Greater Toronto Area. Its work connects the extension to the existing Line 5 at Mount Dennis and carries the route west to Renforth Drive in Mississauga. The company installs rail tracks and the equipment that powers and controls trains, including signaling, communications and ventilation, alongside station buildings and facilities for emergency access. It earns revenue through its project delivery agreement with Metrolinx, combining design and construction within the stations, rail and systems package. Trillium Rail Partners was founded in 2025 and is headquartered in Mississauga, Ontario.

Company size
201-500
Company stage
Not listed
Total funding
Not listed
Headquarters
Mississauga, Canada
Founded
2025

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