Department of Homeland Security NAICS 541715 and PSC R499 contractors

Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology). SUPPORT- PROFESSIONAL: OTHER. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541715 · PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$10,179,065,494

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541715 and PSC R499

Caci, Inc. - Federal

Chantilly, VA

Chantilly, VA | 1,121 awards | Top agency Department of Defense | NAICS 541512

$2,696,600,497

Battelle Memorial Institute

Richland, WA

Richland, WA | 103 awards | Top agency Department of Energy | NAICS 541710

$1,435,009,674

Lmi Consulting, LLC

Tysons Corner, VA

Tysons Corner, VA | 256 awards | Top agency Department of Defense | NAICS 541330

$1,008,343,102

Systems Planning And Analysis, Inc.

Alexandria, VA

Alexandria, VA | 238 awards | Top agency Department of Defense | NAICS 541330

$733,398,831

Credence Management Solutions Limited Liability Company

Mclean, VA

Mclean, VA | 222 awards | Top agency Department of Defense | NAICS 541330

$400,745,940

Peraton Technology Services Inc.

Chantilly, VA

Chantilly, VA | 259 awards | Top agency General Services Administration | NAICS 541330

$786,636,920

American Systems Corporation

Mclean, VA

Mclean, VA | 295 awards | Top agency Department of Defense | NAICS 541330

$745,387,738

Securigence LLC

Leesburg, VA

Leesburg, VA | 71 awards | Top agency Department of Defense | NAICS 541511

$3,000

Alpha Omega Integration LLC

Vienna, VA

Vienna, VA | 93 awards | Top agency Department of Homeland Security | NAICS 541512

$45,162,137

Tatitlek Federal Services LLC

Anchorage, AK

Anchorage, AK | 230 awards | Top agency Department of State | NAICS 541611

$304,585,260

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