Accounts Payable Expenditure Assistant

At Weston Solutions, Inc. you will do meaningful work and make valuable contributions. Employee-ownership at Weston is a path to professional growth and access to diverse opportunities in a highly connected community that works together across key service areas to make a difference in the environment. Weston continues to evolve and adapt to our changing world as a premier provider of environmental and infrastructure services for over sixty years. In both the public and private sectors our teams help identify, solve, mitigate, and manage critical environmental issues to help clients achieve a more sustainable future.

Weston Solutions is looking for an Accounts Payable Expenditure Assistant that is responsible for the accurate and timely processing of invoices and vendor payments using the OnBase AP automation system integrated with Deltek Costpoint. The Accounts Payable Expenditure Assistant supports the Accounts Payable team; this role ensures adherence to company policies and internal controls while supporting an efficient, paperless accounts payable process.

Location: West Chester, PA

Expected Outcomes:

Invoice Processing and Workflow Management

• Monitor OnBase dashboards for incoming electronic invoices
• Validate invoice details and perform PO and receipt matching or assign appropriate GL codes for non-PO invoices.
• Route invoices for approval using automated workflows; follow up with approvers on any delays or discrepancies.
• Ensure proper documentation and audit trail is maintained within OnBase.

Payment Processing

• Prepare and support the processing of payments (ACH and check) in Deltek Costpoint based on the set Accounts Payable Procedures.
• Verify all payments to supporting documentation to ensure validity and accuracy of the payment prior to issuance.
• Support weekly and monthly cash disbursement reporting.

Vendor Management and Communication

• Respond to vendor inquiries regarding invoice and payment status.
• Assist with vendor setup and changes, ensuring all compliance and documentation requirements are met.
• Contribute to efforts to transition vendors from checks to ACH payments.

Reconciliations and Reporting

• Support month-end close by ensuring invoices are entered within the intended FY, PD & SubPd.

Compliance and Documentation

• Maintain compliance with company policies, SOX/internal controls, and audit requirements.
• Organize and retain all AP records digitally within OnBase for audit readiness.

Continuous Improvement and Collaboration

• Identify opportunities to improve efficiency and accuracy within the AP process.
• Work closely with procurement, finance, and the RCOs to address any issues.
• Participate in UAT and provide feedback for system enhancements or updates.
• Research issues/questions, communicate to management as needed.
• Other Tasks as assigned including file duties assist with expense receipt audit function.

These job requirements are not exhaustive and other duties may be assigned. WESTON reserves the right to modify the job description as needed.

Knowledge, Skills & Abilities

• High School Diploma, plus minimum 4 to 6 years related experience.
• Good organizational, interpersonal, analytical and oral and written communication skills.
• Must be detail oriented, able to meet time sensitive deadlines, and carry out multiple priorities simultaneously.
• Must be proficient with Microsoft Office, specifically Excel.
• Experience with Deltek Costpoint or similar ERP systems and OnBase a plus.
• Ability to network and function in a team environment both remotely and in person.

We fully invest in our people: Weston provides a generous, comprehensive benefits package program that offers employees high value options with solid financial protection, meeting the personal needs of its people and their families.

• Medical, Dental, Vision, 401K with base and matching employer stock contributions.
• Paid time off plus personal, holiday and parental leave.
• Life and disability plans.
• Critical illness and accident plans.
• Work/Life flexibility.
• Professional development opportunities