Senior Purchasing and Accounts Payable Associate

About Us

About the Role

Dianthus Therapeutics is seeking a detail-oriented Senior Purchasing & Accounts Payable Associate to join our growing Finance organization. This role will take ownership of the Company’s purchase order process in NetSuite, maintain accurate purchasing records, monitor outstanding commitments, and provide support across accounts payable and financial close activities.

Reporting to the Director, SEC Reporting and Technical Accounting, this person will work closely with Finance and cross-functional teams, this individual will help ensure purchasing and invoice activities are completed accurately, efficiently, and in accordance with Company policies and internal controls.  The ideal candidate brings strong hands-on purchasing and accounts payable experience and can quickly operate independently while helping strengthen processes and controls as the organization grows.

We are building a culture of individuals who hold our core principles at the center of our operations, with the goal to elevate the care of our patients’ lives. We are open to you working remotely.

Key Responsibilities

• Create, process, and maintain purchase orders in NetSuite, ensuring accurate vendor information, coding, financial classifications, documentation, and approvals.
• Review purchase order requests for completeness and compliance with established purchasing policies and approval requirements.
• Process purchase order amendments, adjustments, and closures.
• Conduct monthly reviews of open purchase orders, identifying aged balances, inactive commitments, completed services, and other items requiring follow-up.
• Partner with department owners to confirm outstanding commitments and resolve discrepancies among purchase orders, invoices, and contractual balances.
• Support accounts payable activities, including invoice review, coding, purchase order matching, vendor onboarding, and payment preparation.
• Assist with monthly and quarterly close activities by identifying outstanding invoices, vendor accruals, and potential unrecorded liabilities.
• Maintain accurate purchasing and accounts payable records in support of internal controls and financial reporting.
• Identify opportunities to improve purchasing, invoice-processing, and related Finance procedures as the organizational complexity increase.
• Support additional accounting activities and special projects as needed.

Experience

• Bachelor’s or associate degree in accounting, Finance, Business Administration, or a related field, or equivalent relevant experience.
• Demonstrated experience independently managing accounts payable and purchasing activities in a fast-paced, high-volume environment.
• Experience with purchase orders, invoice processing, vendor records, and related financial documentation.
• NetSuite experience strongly preferred.
• Strong attention to detail, organization, and follow-through.
• Ability to manage multiple priorities, meet deadlines, and work independently.
• Strong communication skills and the ability to collaborate effectively across functions.
• Proficiency with Microsoft Excel and other Microsoft Office applications.