Accounts Payable Specialist
- Devens, MA
- Hybrid · Full-time
- $40 – $60/hr
- Posted Oct 22, 2026
What you'll do:
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Invoice processing: Manage roughly 200–300 invoices per week; verify vendor, invoice number, date, amount, entity, PO, and coding using approved guidance; investigate duplicate alerts before processing
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Matching and controls: Perform two-way and three-way matching; verify receipts, service approvals, payment terms, tax, freight, and exemption support; resolve or escalate discrepancies before payment
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Exception resolution: Work with Procurement, Receiving, requesters, and vendors to resolve missing receipts, insufficient PO funds, billing errors, and approval delays; track hold reasons, owners, and next action dates
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Vendor and payment support: Respond professionally to payment inquiries; obtain corrected invoices and credit memos; track credits and refunds; prepare payment support under established approvals and safeguards, including duplicate-payment checks for automatic debits
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Month-end support: Identify unbilled vendor and contractor costs; provide accrual support and reconcile vendor statements and AP records; coordinate coding questions and close items with Accounting
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Process improvement: Identify recurring exceptions and their causes; recommend practical fixes; update procedures and support approved workflow improvements, system testing, and cross-training
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Own the follow-through: Organize the queue by due date and risk, follow up promptly, and close the loop with vendors and internal partners
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Ask and investigate: Question unclear or inconsistent information, use supporting records to understand the issue, and bring recommendations to the supervisor
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Collaborate and protect controls: Work constructively across functions, communicate blockers early, handle sensitive information carefully, and preserve required approvals and documentation
What we're looking for:
- Relevant high-volume accounts payable experience, including two-way and three-way matching, vendor communication, and month-end support
- ERP experience required
- Working knowledge of debits and credits, accruals, expense coding, purchase orders, GL accounts, and reconciliations
- Strong Excel, strong attention to detail, atrong organization, and clear communication
- Ability to investigate discrepancies, recognize patterns, follow through, and adapt as processes change
Must-have requirements:
- Perform activities such as typing, standing, or sitting for extended periods of time
- Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
About Commonwealth Fusion Systems
Commonwealth Fusion Systems is the world's largest and leading commercial fusion energy company. They move fast and revolutionary high-temperature superconducting (hts) magnets to speed the arrival of commercial fusion energy. They are known for their proven science and manufacturing at Sca.