2005 Top 100
49: SI International Inc.
| Top 100 Revenue: | $202,626,891 |
| Defense Revenue: | $67,632,288 |
| Civilian Revenue: | $134,994,603 |
| 2004 Revenue: | $262.3 million |
| 2004 Earnings: | $10.9 million |
| 2003 Revenue: | $168.3 million |
| 2003 Earnings: | $7.4 million |
| Number of employees: | 3,700 |
| Headquarters: | Reston, Va. |
| Website: | www.si-intl.com |
| Leadership: | Ray J. Oleson, CEO and chairman, S. Bradford Antle, president and COO Brad Antle, president and COO |
| Ticker: | SINT |
| Lines of business: | Software development, systems engineering, systems consulting, eSolutions, mission-critical outsourcing, information security, learning solutions and network solutions |
| Major customers: | Air Force Space Command, State and Homeland Security departments, and the intelligence community |
| Major contracts/projects: | C4I2TSR (command and control), enterprise architecture, National Visa Center, Federal Retirement Thrift Investment Board. |