Federal Management Systems, Inc. | Team
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Client Satisfaction. Results Delivered.

> Team


President & CEO

For over 35 years, Mr. Stephenson has directed teams of specialists in finance, accounting, auditing, banking, government procurement, information technology, and security services at several Federal, State, Local, and International agencies—including the U.S. Department of State, U.S. Department of Commerce, the U.S. Department of the Treasury, the Internal Revenue Services, the National Science Foundation, the National Institute of Health, the U.S. Department of Defense, the U.S. Department of Homeland Security, the U.S. Department of Justice, the U.S. Small Business Administration, the European Union, and the Caribbean Community and Common Market (CARICOM).


Mr. Stephenson is a veteran of the United States Army where he served as a Military Police and a Public Affairs Specialist. He is a graduate of the U.S. Military Police Academy and Defense Information School (DINFOS). He holds a Bachelor of Business Administration (magna cum laude) Accounting; a Masters of Business Administration; Bachelor of Arts in Economics; and several professional certificates in accounting, auditing, banking and finance. He has completed several years of post-graduate studies in Public Administration and has served as an Adjunct Professor at the undergraduate and graduate levels. His professional designations include CGFM (Certified Government Financial Manager), and he is a graduate of the American Institute of Banking (AIB).

Aubreana Stephenson-Holder

Chief Operating Officer (COO)

As COO, Mrs. Stephenson Holder works with the Human Resources and Payroll Department to streamline communication regarding employee relations as well as assists in all aspects of Business Development. Along with her title of COO, she is also a Project Manager responsible for successful management of numerous projects and selects and leads the teams for her projects and holds over 15 years of government contracting and management experience.  Along with her management skills, Mrs. Stephenson-Holder is the lead on contract negotiations for the company. She is a member of the Society of Human Resources Management and a member of the American Bar Association.


Mrs. Stephenson Holder received her Bachelor’s Degree from the University of Maryland, College Park and a Juris Doctorate from the David A. Clarke School of Law. She has several Certificates from George Mason University for Government Contracting Education, Project Management, Human Resources, and Accounting Services. As well as won numerous awards for her leadership skills and community involvement, such as The Maryland Daily Record Journal’s – Top 100 Women and VIP List, The Network Journal 40 Under Forty Dynamic Achievers and The Leadership Cent of Excellence Awardee.

George Stephenson, M.S., CGFM

Vice President, Accounting

Mr. Stephenson is an accomplished Executive Manager serving as Vice President of Accounting, Controller and head of Pricing at FMS. He has over 10 years of Federal industry experience and a track record of growing sales in Grants Management, Internal Controls, Financial Systems, Accounting Remediation and Security Support Services. He manages domestic and international operations of FMS directing business development, strategic positioning, and strategic planning with small business and large global organizations.

William J. DiVello

Director Government Accounting

Mr. DiVello has held professional and executive positions in Federal and local government for over 35 years where he contributed to positive change in government operations, including the strengthening of internal control throughout the government environment. His varied experiences have included evaluating functional areas such as financial management, procurement, health care, grant management, tax, supply, police and investigative operations, logistics, information technology, security, transportation, personnel, weapon system acquisition, and foreign military sales. Mr. DiVello has represented inspector general and audit and investigative organizations for the District of Columbia Government, the Department of the Treasury, and the Department of Defense. He has chaired audit committees for financial statement audits, led single audits, and chaired the District of Columbia Board of Review for Anti-Deficiency Violations. He has lectured on audit and investigative practices throughout the country to foreign delegations visiting the U.S. and to institutions of higher learning. Mr. DiVello is a Certified Inspector General (CIG) and a Certified Fraud Examiner (CFE).

Terry Valladares

Senior Project Director

Mr. Valladares has more than 10 years of experience establishing and managing government contracts for FMS at DHHS and DOJ. Mr. Valladares has been responsible for project management, corporate marketing, business development, capture and proposal activities, and customer retention at FMS. He is currently the Project Manager for the program operations and IT support contract at Treasury’s State Small Business Credit Initiative.


Mr. Valladares holds a Bachelor of Science degree from McGill University, where he was a Commonwealth Scholar, and a Master of Science degree from the University of Maryland at College Park through the Graduate Fellowship Program. He is a member of the Project Management Institute (PMI).

Amos C. Townsend

Director, Information Technology Practice

Mr. Townsend has over 33 years of experience in Information Technology (IT) management, acquisition management, human capital management, software development, telecommunications, and project management in the Federal government. His experience includes all levels of management including as a Senior Executive Service (SES) leader in delivering software for modernizing tax administration processing at the IRS and providing modernized telecommunications capabilities for the Department of the Treasury. He served as an Instructor in Project Management at the Graduate School. He is currently the Project Manager for an Information Technology documentation support effort at the Internal Revenue Service supporting software development projects to implement the tax processing aspects of the Affordable Care Act (ACA).


He holds Bachelor of Arts and Master of Arts degrees from the University of Alabama at Birmingham (UAB), a Masters Certificate in Project Management from ESI/George Washington University, and is a certified Project Management Professional (PMP).

Christina Stephenson-George

Business Manager

Mrs. Stephenson-George has over 15 years accounting, administrative, and managerial experience with various government agencies.   She retains management control over expenses through fund execution, tracking, and general oversight. Mrs. Stephenson-George oversees the Payroll and HR Department.

Mrs. Stephenson-George holds a Bachelor’s of Science Degree in Business Management. She is also a member of Society of Human Resource Management and American Payroll Association.

Michelle Johnson

Project Manager

Ms. Michelle Johnson has over 15 years of Project Management experience with the Federal government and commercial clients. Ms. Johnson oversees FMS’ IDIQ and BPAs with the Department of State (DoS), made up of over 400 task orders across 23 bureaus totaling $250 million. She manages over 100 personnel ensuring that tasks are completed within scope and on time. She efficiently meets deliverables and project requirements. Under Ms. Johnson leadership and successful management, FMS has maintained its presence at DoS since 2001.

Oslen Best

Contracts Manager & Facility Security Officer (FSO)

Mr. Oslen Best as a FMS employee has over 13 years of experience in Government Contracting and Industrial Security Management. He is responsible for the administration and management of all FMS Contracts and Subcontracts in compliance with Company Policy and Federal Acquisition Regulations. He interacts with all departments of the business; Management, Finance and Accounting, Legal, Project and Program Management, Human Resource Management and Business Development to ensure efficient contract performance. As Facility Security Officer (FSO) Mr. Best is the Key Management Personnel (KMP) responsible for Federal Management Systems’ compliance with and its obligations under the National Industrial Security Program (NISP); to safe guard unauthorized disclosure of Classified Information. He performs security clearance vetting, training and initiation for personnel clearance for FMS employees.

Mr. Best holds a Bachelors of Social Science Degree in Economics and a Master’s in Business Administration (MBA). He is a Certified Professional Contracts Manager (CPCM), a Certified Federal Contracts Manager (CFCM), a Certified Schedules Contracts Manager (CSCM) and holds a Facility Security Officer (FSO) Certificate. He is a member of the National Contract Management Association (NCMA) and the Capital Industrial Security Awareness Council (CISAC).

Kay Williams, MBA

Senior Management Consultant/Quality Control Manager

Ms. Williams is a detailed oriented professional with over 15 years’ experience addressing accounting and financial management of federal, state, and local government and private businesses. She has a strong background in coordinating accounting operational functions and improving accounting and financial operations. Ms. Williams has extensive experience in obtaining required documentation for sampling and evaluating supporting documentation for compliance with established governmental regulations. She possesses strong analytical skills with an understanding of GAAP principles. She has worked with teams of professionals responsible for conducting compliance audits, risk assessments and evaluating the internal controls of Federal, state and pass through entities.


Ms. Williams holds a Bachelor’s Degree in Accounting and MBA in Business Administration. She is a CPA Candidate and a CGFM Candidate. She is also a Member of The Greater Washington Society of CPAs (GWSCPA). She has a Certificate of Training in Government Environment; a Certificate of Training in Government Financial Management and Control; and a Certificate of Training in Government Accounting, Financial Reporting and Budgeting.

We’re always looking for qualified personnel.