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Trillium Rail Partners

Builds rail stations, tracks and transit systems

Senior Accounts Payable/Project Accountant

Financial Accounting +1Confirmed live in the last 24 hours
Full-timeMississauga, ON, CanadaNo salary listedIn-person

About the Job

Requirements

  • A bachelor's degree in accounting, finance, or a related field.
  • At least 8 years of relevant accounting or finance operations experience, including hands-on reconciliations, month-end support, transaction investigation, and audit documentation.
  • Strong working knowledge of general accounting, account reconciliations, accruals, accounts payable processes, and internal controls.
  • Experience with ERP and project financial systems.
  • Ability to investigate discrepancies across financial records, identify underlying causes, document conclusions, and follow issues through to resolution accurately; manage recurring reconciliations alongside urgent audit requests and changing priorities.
  • Clear written and verbal communication skills to obtain supporting information from cross-functional teams, explain reconciliation differences, coordinate corrective actions, and escalate unresolved issues to the Finance and Admin Lead.
  • Advanced proficiency in Microsoft Excel, including reconciliations, data analysis, and financial reporting.

Responsibilities

  • Provide hands-on support to the Finance and Admin Lead across day-to-day finance activities, information requests, and issue resolution; investigate discrepancies, coordinate corrective actions with relevant teams, track outstanding matters through resolution, and escalate issues and competing priorities as needed.
  • Prepare and maintain financial schedules, reconciliations, and supporting records for management review, reporting, and month-end support; investigate differences, follow up on aged outstanding items, and coordinate required adjustments with the accounting team.
  • Maintain affiliate and partner tracking schedules covering invoices, recharges, payments, balances, and outstanding items; reconcile schedules to available financial and counterparty records, investigate differences, follow up on missing documentation or unresolved matters, and support billing and receivables follow-up as assigned by the Finance and Admin Lead.
  • Provide backup coverage to the accounts payable team during absences, peak workloads, and urgent processing needs; support invoice review and processing, coding checks, purchase order matching, and approval follow-up in accordance with established procedures and assigned access.
  • Track and coordinate all supporting documentation provided to the client for monthly cost-plus billings; maintain a traceable register linking billed costs to supporting records and tracking submission dates, client queries, outstanding requirements, and resolution status; coordinate with procurement, subcontract, cost control, and accounts payable teams to obtain missing evidence, retain records of submissions and responses, follow items through closure, and escalate delays or unresolved issues to the Finance and Admin Lead.
  • Provide ad hoc financial analysis, tracking reports, documentation, and finance-related administrative support as assigned by the Finance and Admin Lead; coordinate information requests across teams, maintain clear records of actions and decisions, and support practical improvements to finance and accounts payable workflows.
  • Coordinate ongoing internal and external audit requests under the direction of the Finance and Admin Lead; prepare audit schedules, reconciliations, cost breakdowns, transaction listings, and supporting documentation; maintain a request tracker and follow up with relevant teams to resolve missing evidence and outstanding queries within agreed deadlines.
  • Perform periodic reviews of project transactions to assess compliance with approval limits, delegated authorities, procurement procedures, and financial control requirements.
  • Support implementation of improved internal controls, standard operating procedures, and documentation requirements to reduce audit findings and recurring control deficiencies.

Desired Qualifications

  • Construction or engineering industry experience is an asset.
  • Familiarity with International Financial Reporting Standards and construction accounting 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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