Accounts Payable Specialist

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About the role

About Commonwealth Fusion Systems:    Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.   Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers, suppliers, and many others to build the energy industry of the future.   We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.   Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.    If that’s you and this role fits, we want to hear from you. Join the power movement as an Accounts Payable Specialist   As an Accounts Payable Specialist, you will be responsible for providing accurate, timely accounts payable processing while helping improve how invoices move from receipt to payment. Reporting to the Accounts Payable Supervisor, the AP Specialist will manage a high-volume invoice queue, investigate discrepancies, coordinate resolution with vendors and internal partners, and support month-end close. The role calls for curiosity about why problems occur and practical ideas that reduce repeat issues, delays, and rework. The AP Supervisor remains accountable for team priorities, oversight, and escalation decisions. The AP Specialist owns assigned invoice processing, documentation, and follow-through; coordinates with the responsible buyer, requester, or approver; and escalates unresolved issues with facts and a proposed next step. Payment approvals, purchasing decisions, and accounting policy remain with authorized owners.