High-Volume AP & Purchasing Specialist

Doist; Waltham (MA); On-site; USD 52,000 - 76,000; Full time

Job summary

Doist is seeking an AP/Purchasing Specialist in Waltham, MA, to process high volumes of supplier invoices from receipt through posting and payment, ensuring accuracy and timely resolution of exceptions.

You will collaborate with Procurement, Receiving, and business stakeholders to investigate issues, perform 2-way/3-way matching, and support month-end close with proper documentation and controls.

Responsibilities

• Receive, review, and accurately code invoices (PO and non-PO) in accordance with policy and internal controls.
• Perform 2-way/3-way match, validate pricing, quantities, terms, tax, and supporting documentation.
• Ensure proper GL/department/project coding and compliance with approval matrix; route for approval as needed.
• Assist with management of AP mailboxes.
• Provide internal and external customer service.
• Investigate and resolve invoice holds and discrepancies (e.g., PO/receipt mismatches, price/quantity variances, duplicate invoices, missing approvals, vendor master issues).
• Partner with Procurement, Receiving, requesters, and suppliers to obtain missing information and drive timely resolution.
• Document root cause and corrective actions; recommend process improvements to reduce recurring exceptions.
• Process transactional purchase requests from internal stakeholders, ensuring accuracy in format, coding, pricing, and, in the case of laboratory supplies, preferred supplier alignment.
• Facilitate monitoring of purchase orders from order through delivery, alerting end users of potentially critical supply disruptions.
• Support payment runs by reviewing aging, confirming payment holds/releases, and responding to urgent payment requests.
• Respond to vendor inquiries, provide remittance details, and maintain professional communication and follow-through.
• Assist with month-end close tasks such as AP reporting, accrual support, and reconciliation activities as assigned.

Skills

Accounts payable

Invoice processing

Vendor management

Problem solving

Communication

Job description

Doist is seeking an AP/Purchasing Specialist in Waltham, MA, to process high volumes of supplier invoices from receipt through posting and payment, ensuring accuracy and timely resolution of exceptions.

You will collaborate with Procurement, Receiving, and business stakeholders to investigate issues, perform 2-way/3-way matching, and support month-end close with proper documentation and controls.