Accounts Payable Accountant Co-Op

The role of Accounts Payable Account Co-Op will provide hands‑on support to the Finance team. This role manages accounts payable functions, including processing invoices, matching purchase orders, and handling vendor inquiries. It supports reconciliations, month‑end close, and ad‑hoc finance projects while ensuring accuracy and timeliness.

• Accurately process a high volume of vendor invoices.
• Match POs and receipts with invoices and ensure coding accuracy.
• Handle urgent payment requests.
• Respond to vendor inquiries and assist with issue resolution.
• Assist with AP reconciliations and monthly close tasks as needed.
• Support ad hoc projects and finance team initiatives.

• Associate or bachelor’s degree in accounting or related field preferred.
• 2+ years of AP experience; temp or contract experience is a plus.
• Proficiency with ERP systems and Excel.
• Ability to learn quickly, work independently, and meet tight deadlines.
• Reliable, detail‑oriented, and professional.

• Required use of standard office equipment including laptop, phone, copier, etc.
• Typical office environment.
• Must be able to sit for long periods of time.

The hiring range represents what Mevion Medical Systems, Inc. reasonably expects to pay for this position at the time of posting. The actual salary offered will depend on the selected candidate’s qualifications, experience, skills, and other job‑related factors.