Senior Accounts Payable (AP) Expense Specialist

Akima, LLC•Herndon, VA

20d•Hybrid

About The Position

We are seeking a detail-oriented and experienced Senior Accounts Payable (AP) Expense Specialist to manage and oversee employee expense reimbursements using Deltek Costpoint Time & Expense (T&E). This role will also play a key part in special projects, system enhancements, and a future implementation of Concur Expense, supporting the organization’s transition to a modern, scalable expense management platform. The ideal candidate brings strong technical expertise, a continuous improvement mindset, and the ability to support both day-to-day operations and strategic initiatives.

Requirements

Bachelor’s degree in Accounting, Finance, Business Administration, or related field (or equivalent experience).
2–5+ years of experience in Accounts Payable, expense reimbursement, or corporate accounting.
Hands-on experience with Deltek Costpoint T&E.
Strong understanding of AP controls, expense compliance, and audit requirements.
Proficiency in Microsoft Excel (pivot tables, lookups, reporting, data analysis).
High attention to detail with strong organizational and time management skills.
Ability to manage multiple priorities in a fast-paced, evolving environment.
This Hybrid position requires that you live within commuting distance from Herndon, VA.

Nice To Haves

Experience with Concur Expense or other expense management platforms.
Experience participating in system implementations, conversions, or major upgrades.
Experience in government contracting or regulated environments.
Knowledge of FAR/DFARS and government reimbursement requirements.
Prior involvement in audit support and compliance initiatives.
Strong problem-solving and continuous improvement mindset.

Responsibilities

Review, audit, and process employee expense reports in Deltek Costpoint T&E for accuracy, compliance, and proper documentation.
Ensure timely reimbursement of approved expenses through AP payment cycles.
Verify expense coding, project charging, cost allocations, and compliance with company and government regulations.
Enforce corporate travel and expense policies and identify exceptions, trends, and risk areas.
Resolve discrepancies, incomplete submissions, and system issues related to expense reporting.
Serve as a subject matter expert (SME) for Costpoint T&E, credit card workflows, and expense reimbursement processes.
Provide guidance and support to employees and managers on expense policies and system usage.
Assist with month-end close activities, accruals, and reconciliations related to T&E.
Support internal and external audits by providing documentation and explanations.
Participate in special projects, including process optimization, automation initiatives, and reporting enhancements.
Play an active role in the future implementation of Concur Expense, including requirements gathering, testing, validation, user training, and post-go-live support.
Support system upgrades, integrations, and configuration changes related to expense management.
Develop and maintain SOPs, training materials, and internal controls related to expense processing.