Payroll, AP, and T&E Manager - Oak Ridge, TN

Company Overview

RSI provides full-service environmental solutions supporting clients through all phases of cleanup, with expertise in regulatory compliance, characterization, monitoring, renewable energy, and project management. Built on a strong foundation of collaboration and a people-first culture, RSI is known for being easy to work with and delivering results through long-term partnerships.

RSI is part of a family of companies unified by purpose to deliver safe, reliable solutions to our clients’ unique challenges. We are committed to providing technically superior service, adding value at every stage, and leaving things better than we found them.​
 

Job Summary:

The Payroll, Accounts Payable (AP), and Travel & Expense (T&E) Manager is responsible for the end-to-end management of payroll, vendor payables, and employee expense processes within a government contracting environment. This role ensures strict compliance with FAR, DCAA, and other regulatory requirements, while maintaining accurate financial records in Deltek Costpoint ERP.

The position plays a critical role in supporting project accounting, audit readiness, and internal controls, while driving operational efficiency and leading a multi-functional team. This position is an office-based environment, with extended hours during payroll cycles, month-end close, and audit periods.
 

Payroll Management (Government Contracting Focus)

• Oversee full-cycle payroll processing within Deltek Costpoint, ensuring accuracy and timeliness across multi-state jurisdictions.
• Ensure compliance with federal, state, and local tax regulations, as well as government contracting requirements.
• Manage labor distribution, ensuring accurate charging of labor to contracts, projects, and cost pools.
• Partner with HR and Contracts to ensure proper labor classifications and compliance with wage determinations (e.g., SCA, DBA).
• Lead year-end processes including W-2 preparation and support audits including DCAA audits by maintaining payroll documentation and audit trails.
   

Accounts Payable

• Oversee full-cycle AP processing in Costpoint, including 3-way matching, invoice approvals, and payment runs.
• Ensure costs are properly recorded in accordance with FAR allowability and allocability rules.
• Monitor subcontractor and vendor payments, ensuring compliance with contract terms and flow-down clauses.
• Maintain vendor records, including W-9s and 1099 reporting.
• Support audit requests (DCAA, external auditors) with documentation and reconciliations.
• Manage cash disbursements and support cash flow planning.
   

Travel & Expense (T&E)

• Administer T&E processes within Costpoint or integrated systems (e.g., Concur), ensuring compliance with FTR/JTR and company policies.
• Review and approve expense reports for accuracy, allowability, and proper project charging.
• Ensure per diem rates, travel costs, and expense categories comply with government regulations.
• Manage corporate credit card programs and expense audits.
• Train employees on proper expense reporting and compliance requirements.
   

Compliance, Controls & Audit

• Ensure adherence to FAR, CAS (if applicable), and DCAA compliance standards.
• Maintain and strengthen internal controls across payroll, AP, and T&E functions.
• Support system audits, incurred cost submissions, and provisional billing rate reviews.
• Ensure processes support audit readiness at all times.
   

Leadership & Process Improvement

• Lead, mentor, and develop a team responsible for payroll, AP, and T&E operations.
• Drive continuous improvement initiatives, including automation and Costpoint optimization.
• Develop and monitor KPIs (cycle times, error rates, compliance metrics).
• Collaborate with Finance, Project Accounting, Contracts, and HR teams.
   

Requirements and Education:

• Bachelor’s degree in Accounting, Finance, or related field.
• 7 years of experience in payroll and/or AP, preferably in government contracting. Experience in lieu of education may be considered.
• 3 years of leadership or supervisory experience.
• Strong knowledge of: FAR (Federal Acquisition Regulation), DCAA audit requirements, Labor costing and project accounting.
• Experience with multi-state payroll and tax compliance.

Preferred Requirements and Education:

• Hands-on experience with Deltek Costpoint ERP (payroll, AP, expense modules).
• Experience with Costpoint Time & Expense or integration with Concur.
• Knowledge of Service Contract Act (SCA) and Davis-Bacon Act (DBA) requirements.
• Experience supporting incurred cost submissions and government audits.
   

Key Competencies:

• Strong understanding of government compliance and audit requirements.
• High attention to detail and accuracy.
• Process improvement and systems optimization mindset.
• Ability to manage competing priorities in a deadline-driven environment.
• Strong communication and cross-functional collaboration skills.
   

Success Metrics:

• Payroll accuracy and compliance (including labor distribution accuracy).
• AP cycle times and error rates.
• T&E compliance with FAR/FTR regulations.
• Audit outcomes (DCAA, external audits).
• Process efficiency improvements and system utilization.
• Team performance and retention.
   

Clearance and Health Regiments

• Criminal Background Check
• Pre-placement Drug Screening
   

EEO Statement

RSI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, gender, color, age, sexual orientation, gender identification, national origin, religion, marital status, ancestry, citizenship, disability, protected veteran status, or any other factor prohibited by applicable law.