Our client is looking for an Integration Accounting Manager - System Integration to act as the primary in office lead at a newly acquired subsidiary. In this high-impact role, you will document end-to-end financial and operational workflows, lead the transition from Sage 50 and systematically migrate core accounting functions into Corporate Shared Services while maintaining operational continuity.

Key Responsibilities

Process Mapping & Operational Analysis

- Document key workflows, approval matrices, and system touchpoints across billing, AR/collections, AP, banking, payroll, month-end close, and job costing.
- Identify key-person dependencies, critical vendor/customer relationships, process gaps, and opportunities for automation.

ERP Migration & System Governance

- Lead the end-to-end migration from Sage 50 including complete data backup and historical preservation.
- Map the Chart of Accounts, customer/vendor master files, and dimensional fields to corporate structure.
- Perform GL, AR, AP, and opening balance reconciliations; direct unit testing, parallel runs, and final cutover.
- Inventory all software and subscriptions, securing administrator rights and coordinating user access with corporate IT.

Shared Services Integration





- Create clear SOPs and train the Corporate Shared Services team on transferred workflows.
- Oversee parallel processing and sign off on handovers to ensure zero disruption to customer billing, vendor payments, or day-to-day operations.
- Maintain a master integration tracker covering action items, target dates, ownership, and risk flags.
- Deliver weekly structured updates to the CFO detailing Completed Tasks, Next Steps, Identified Risks, and Decisions Required.
- Act as an empathetic, grounded change agent on the ground to mitigate key-person retention risks and build trust with local staff.

Qualifications & Requirements

- CPA designation or equivalent senior/managerial accounting experience with strong operational exposure.
- Direct hands-on experience migrating legacy ERP systems (Sage 50, NetSuite or Dynamics).
- Deep understanding of job costing, intercompany workflows, and shared services models.
- Strong project management and change management capabilities.
- Ability to work 5 days per week on-site, splitting time between Mississauga/Oakville and Niagara Falls facilities as required.

📌 Accounting Manager - System Integration (Ontario)
🏢 randstad canada
📍 Ontario