Markham - Accounts Payable Coordinator

Accounts Payable Coordinator

Location: 505 Miller Avenue, Markham, Ontario

Position Type: Permanent Full-Time

Reporting To: Accounts Payable Supervisor

Start Date: Immediately

Hours: Monday to Friday, 8:00am to 5:00pm

Compensation: $55,000 - $60,000 per annum

Miller Waste Systems Inc. has been in operation since 1961. As a proudly Canadian, privately owned and operated waste company, Miller Waste is a leader in waste management and diversion, providing governments and industries with a wide range of services in the provinces of Ontario, Nova Scotia, New Brunswick, and Manitoba, and currently operates out of more than 30 locations.

Our people are our number one asset and together we are working towards achieving our vision to be the most trusted, most operationally‑excellent integrated waste provider in North America.

Join us and become a part of the Miller Waste team and be a part of something great, where you can make a difference.

The Accounts Payable Coordinator is responsible for ensuring accurate and timely processing of invoices, expense reports, and related financial transactions while ensuring compliance with company policies and internal control requirements. This role also collaborates closely with internal stakeholders to resolve discrepancies, support efficient processing, and maintain positive vendor relationships.

• Review, validate, match, code and process vendor invoices in AP systems, including verification against purchase orders and receiving documentation, ensuring accuracy, proper approvals, and timely processing.
• Apply and validate indirect taxes (HST/GST/PST), ensuring correct tax treatment and coding; escalated discrepancies or unusual items as needed.
• Review, validate, and process employee expense reports, ensuring compliance with company policies, appropriate tax treatment, proper approvals, and accurate system entry.
• Follow up with employees and approvers to resolve expense report discrepancies or missing documentation.
• Investigate and resolve discrepancies with vendors or internal stakeholders.
• Respond to vendor inquiries and provide timely resolution or escalation.
• Reconcile vendor statements and resolve discrepancies in a timely manner.
• Ensure adherence to company policies and month‑end schedules, including invoice cut‑off validation and resolution of outstanding A/P items.
• Support continuous improvement of accounts payable processes, policies and procedures.
• Maintain proper documentation and audit‑trail for all accounts payable transactions in accordance with internal control requirements.

• High school diploma required; post‑secondary education in accounting, finance, or a related field preferred.
• Basic knowledge of Canadian indirect taxes (HST/GST/PST).
• Minimum 1–3 years of accounts payable or related experience.
• Working knowledge of Sage Intacct, Yooz, Dossier, and Nexonia systems is an asset.
• Knowledge of three‑way matching (invoice, PO, and receiving).
• Strong attention to detail and accuracy in data entry.
• Understanding of accounts payable controls, documentation requirements, and audit support processes.
• Intermediate proficiency in Microsoft Excel.
• Ability to manage high volumes and meet deadlines in a fast‑paced environment.
• Excellent communication skills, both written and verbal.
• Positive attitude with the ability to adapt in a fast‑paced and evolving environment.

Posting closing date: This posting will remain active until it has been filled.

Miller Waste Systems is committed to equity, diversity and inclusivity in the workplace; we welcome applications from women, racially visible individuals, people with disabilities, Indigenous peoples, and LGBTQ2S+ persons.

We are committed to providing people with disabilities with equal opportunities and standards of goods and services and are fully compliant with applicable provincial Disabilities Acts.

Miller Waste Systems strives to be an employer of choice. As a proudly Canadian, privately owned and operated waste company we have over 65 years’ experience of providing quality service to all our customers. We have been successful in achieving this goal by providing a family and employee‑centric environment at all our locations, along with industry‑leading work environment and compensation, benefits, and pension programs.