Senior Accounts Payable Specialist

At OSL Retail Services, we believe people are the heart of everything we do, and it is an exciting time to be part of something special! Our momentum is growing, and is fueled by innovation, collaboration, and a shared entrepreneurial spirit that drives real results. Founded in 2012 in Mississauga, Ontario, OSL delivers customized sales solutions in retail, direct sales, and customer acquisition, all built on a foundation of integrity, respect, and passion.

Our culture thrives on connection, purpose, and growth. If you’re looking for a place where your talents are valued, your ideas matter, and your career can grow, we’d love to meet you.

We are currently seeking a Senior Accounts Payable Specialist
. Reporting to the Manager, Accounts Payable, this role is responsible for the full cycle of accounts payable, including reconciliations, employee and vendor queries, payment processing, vendor accruals, forecasting, general ledger entries, and the preparation and analysis of various internal and external reports. The ideal candidate is highly detail-oriented, accurate with numbers, and experienced in high-volume AP operations within a fast-paced corporate environment.

Please note this position is a 15-month contract.

• Approve, process, and pay high-volume vendor invoices and expense reports in a timely manner, ensuring correct backups, G/L codes, cost centers, and tax jurisdictions, while performing duplication checks and ensuring compliance with company policies
• Setup and maintain vendor master data and vendor banking details after approval of registration request
• Prevent fraud by performing verbal verification of vendor banking details and communicating professionally with senior vendor contacts (CFO, CEO, Controllers, etc.)
• Ensure tax compliance, including detecting and posting provincial sales tax (PST) self-assessments for applicable jurisdictions and perform remittance where applicable
• Monitor uncashed cheques, process stop payments, reverse payments, and reissue payments as needed
• Analyze, maintain, and update lease schedules according to corporate guidelines
• Analyze and submit payout forecasts to the Treasury team on a monthly and as-needed basis
• Analyze, prepare and submit uploads or journal entries for bi-weekly, monthly, or as-needed adjustments including monthly customs GST statement processing, specific corporate division transactions posting to sales accrual G/L according to material CO segments, multi-business areas or multi-tax jurisdictions invoice transactions and credits, etc
• Analyze and fulfill weekly and monthly FSCS risk items reports of high volume, clear open items in suspense or temporary holding G/Ls or internal accounts
• Assist the Accounting Manager with audits, answer queries, generate reports or fulfill test sampling requests by internal or external auditors and prepare backup as required
• Analyze and clear weekly/monthly risk items, open items in suspense or temporary holding accounts
• Manage AP balance confirmations and related corporate reporting requirements
• Perform timely month-end closing activities, including approving/rejecting parked documents, posting vendor accruals, and clearing related cost centers
• Act as a lead expert for expense systems, supporting improvements, user experience enhancements, and testing of system changes
• Act as administrative/system management lead for 2 or more internal accounting operations proprietary systems

• Bachelor’s degree or equivalent work experience
• 3-5 years of relevant accounts payable or accounting experience preferred
• Experience with ERP systems is an asset
• Strong attention to detail and accuracy working with numbers
• Professional ethics, quality-oriented, and ability to…