Army Future Forces - subcontractor
Army
(SI International, Inc.) W74V8H-04-D-0042 

Command, Control, Communications, Computer, Intelligence, Information Technology, Surveillance and Reconnaissance
21st Contracting Squadron
(SI International, Inc.) FA2517-04-D-0001 

Contract Advisory & Assistance Services & Technical Assistance
Headquarters Air Force Space Command
(SI International, Inc.) FA2517-05-D-9000 

CIO - SP2 (subcontractor)
National Institutes of Health
(SI International, Inc.) 263-01-D-0052 

C4ISR Operational Management, Engineering and Technical Services (COMETS)
Army Service Component Command to the U.S. Strategic Command, U.S. Army Space and Missile Defense Command (USASMDC)
(SI International, Inc.) DASG-62-03-D0006 

DISN Global Solutions (subcontractor)
DISA
(SI International, Inc.) 4600004030 

DoD Logistics, Maintenance & Supply Support (LMSS)
US Army
(SI International, Inc.) W91WAW-08-D-0014 

DOJ ITSS III (subcontractor)
Dept of Justice
(SI International, Inc.) DJJ-05-C-1111 

ENCORE II (subcontractor)
DISA
(Serco Services Inc.) HC1028-08-D-2013 

Engineering and Technical Services Support (subcontractor)
AF Information Warfare Center
(SI International, Inc.) F41621-03-D-6300 

Human Resources Solutions (Prime)
Army HRXXI Program Office - ASA(M&RA)
(Serco Inc.) W74V8H-04-D-0063 

Human Resources Solutions (Prime)
Defense Contracting Command - Washington (DCC-W)
(Serco Inc.) W74V8H-04-D-0067 

Human Resources Solutions (Prime)
United States Army
(Serco Inc.) W91WAW-09-D-0002 

Information Assurance Capabilities Contract (subcontractor)
Defense/DISA
(SI International, Inc.) DCA200-00-R-5003 

Information Technology Enterprise Solutions - subcontractor
US Army
(Serco Services Inc.) W91QUZ-07-D-0004 

Information Technology Training Services - subcontractor
US Dept of Homeland Security, Customs and Border Protection
(SI International, Inc.) GS-35F-5440H-SI 

Network-Centric Solutions (subcontractor)
DoD and other Federal Government Agencies
(SI International, Inc.) FA8771-04-D-0004 

NSETS
National Security Agency
(Bridge Technology, Inc.) MDA904-02-D-0755 

NORAD - USSPACECOM Missions and Architecture (Subcontractor)
US Space Command
(SI International, Inc.) F05604-99-D-9002 

Customized Training & Learning Solutions and Customized Human Capital Solutions
US Office of Personnel Management (OPM)
(Serco Services Inc.) OPM020700008 
(Serco Services Inc.) OPM020700035 

Rapid Response Program (CR2) (subcontractor)
Army Cecom
(SI International, Inc.) DAAB07-03-D-B006 

SeaPort-e
NAVSEA
(SI International, Inc.) N00178-04-D-4018 

PEO STRI OMNIBUS CONTRACT II (STOC II)
U.S. Army Program Executive Office (PEO STRI)
(SI International, Inc.) W900KK-09-D-0369 

Total Information Processing Support Services – 3 (subcontractor)
Internal Revenue Service (IRS)
(SI International, Inc.) TIRNO-06-D-00009 

Service Center Operations Support Services (SCOSS)
U.S. Department of Homeland Security
(Serco Services Inc.) HSSCCG-07-D-00006