Meet Our Team

Experienced and Proven Provider to the Federal Government

An SBA 8(a) certified small business, ARServices is the contractor of choice for government agencies and military organizations in need of mission-critical services in three key areas:

ARServices is a purpose-built federal contractor that understands the unique challenges facing the federal government. The company has been built to provide the staff, expertise, and capabilities federal agencies need for the successful provision of constituent service and mission achievement.

Federal agencies and the military turn to ARServices to deliver the results of a large contracting firm, with the flexibility, agility, responsiveness, and personalized experience of a small business.

Our Executive Team

We are a team of dedicated professionals with an extensive and unparalleled track record of helping agencies fulfill their mission.


What Our Customers Are Saying


  • Deputy Director
    ARServices staff has been repetitively commended for Its crucial skills and acumen, rigorous work ethic, and attention to detail and has been praised by the Client as an “outstanding support [that] consistently demonstrates full grasp and response to tasks assigned
    Deputy Director
    Defense Threat Reduction Agency (DTRA) Research and Development (R&D) Directorate (J9)
  • Contracting Officer’s Representative (COR)
    ARServices and their dedicated contractor personnel has demonstrated excellent customer service in support of this contract… The Contractor always adapts to mission requirements…[and] always display an exceptional professional attitude, appearance, and expertise…
    Contracting Officer’s Representative (COR)
    Defense Threat Reduction Agency (DTRA) Operations, Readiness and Exercise Directorate (J3)
  • General Counsel
    ARServices staff’s flexibility and responsiveness kept me and the Board Members prepared for the [public] meeting and kept the public informed by timely posting of the revised materials on the public website…[helping us] avoid pitfalls experience during prior meetings.
    General Counsel
    Defense Nuclear Safety Board (DNFSB)
  • Contracting Officer’s Representative (COR)
    Thank you for your attendance and contributions to the DCP Protocol Information Office Reverse Site Visit here at the Shady Grove facility yesterday. It was a pleasure to meet with you and learn about your plans to support employee growth. We look forward to a continued successful working relationship.
    Contracting Officer’s Representative (COR)
    National Institutes of Health (NIH) National Cancer Institute (NCI) Division of Cancer Prevention (DCP) Protocol Information Officer (PIO)

Jerry “Jay” McCargo
President & CEO

Mr. McCargo has more than 25 years of successful experience working with organizations from Fortune 500 companies to small businesses in the technology and government contracting market.

Mr. McCargo has held executive management roles in technology marketing, corporate development, business development, operations and program management, and sales prior to leading ARServices. Most recently, he served as Vice President of Marketing/Chief Marketing Officer for AT&T Government Solutions, a multi-billion dollar strategic business unit of AT&T, where he had full responsibility for marketing programs and communications; offer management, including pricing strategy; and business unit planning and performance.

Prior to joining AT&T, Mr. McCargo was Vice President of Business Development for WAM!NET Government Services, Executive Vice President Sales and Marketing for NCI Information Systems, and Vice President of Sales and Marketing for the Information Technology Solutions business sector at Unisys Federal Systems. He was also a Director of National Accounts for Verizon Federal Systems.

Mr. McCargo has a BA in Political Science and English from the University of Rhode Island and a Masters in Business Administration from American University. He has professional certifications from the Wharton School of Business at the University of Pennsylvania, the Tuck School of Business at Dartmouth College, and George Washington University.

Philip Rizzi
Executive Vice President

In early July, Phil Rizzi joined ARServices as Executive Vice President. Phil supports service delivery for ARServices’ three lines of business: research and development support services, business transformation services, and integrated logistics services.  Additionally, Phil oversees all business development and proposal operations.

Phil has over 30 years of experience supporting new and mature programs at over a dozen agencies in the federal civilian and defense markets.

Prior to joining ARServices, Phil served for nearly five years as Vice President at CALIBRE Systems, Inc., where he oversaw two separate operating divisions focused on energy, environment, infrastructure, and human capital and training. He was also a Vice President at SRA International, where he led one of their largest business units focused on environment, energy, and organizational performance.

Phil is an accomplished speaker and presenter, with over 50 presentations and speaking engagements on topics related to government regulations and compliance, organizational transformation, and human capital and workforce issues facing the federal government. He received his Bachelor of Arts degree from Brown University and a Master of Public Policy degree from the John F. Kennedy School of Government at Harvard University. Phil and his wife Lori have two children, Lilly and Spencer, and reside in Arlington, VA.

John Ratliff
Chief Financial Officer

Mr. Ratliff joined the ARServices team in December of 2015 as Chief Financial Officer. In this role, he is responsible for all aspects of the company’s finances, including the maintenance of cash controls and bank reconciliations, payroll processing, accounts payable, required financial reporting, supervision of cash reserves and investments, budget development for various departments, and protection of ARServices assets.

Prior to joining ARServices, Mr. Ratliff served as the Corporate Controller for Defense Group Inc., Vice President of Operations for Women in Community Service, Inc., and Chief Financial Officer for Diplomatic Language Services, Inc.

Mr. Ratliff earned his Master’s degree in International Business Studies at the University of South Carolina.

Larissa Hanpeter
Director of Human Resources

In her role as Director of Human Resources, Ms. Hanpeter is responsible for overseeing recruitment and retention initiatives, compensation and payroll systems, and the company’s compliance with federal and state employment regulations.

Prior to joining ARServices, Ms. Hanpeter served as the Director of Shared Services for the Catholic Charities of the Archdiocese of Washington, a non-profit charitable social services agency. In that role, she was responsible for managing benefits, payroll, compensation, HRIS and compliance operations for more than 80 locations, while also serving as EEO and Affirmative Action Officer.

Before her tenure with the Catholic Charities of the Archdiocese of Washington, Ms. Hanpeter held human resources positions with government contractors, AAC, Inc. and Paradigm Technologies, Inc.

Ms. Hanpeter earned her BA in Law and Society from The American University and holds the SPHR, SHRM-SCP and Certified Compensation Professional (CCP) professional designations.