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

Mantech Srs Technologies, Inc.

Herndon, VA

Herndon, VA | 76 awards | Top agency Department of Defense | NAICS 541330

$392,179,999

Ensco INC

Vienna, VA

Vienna, VA | 124 awards | Top agency Department of Defense | NAICS 541712

$296,661,841

Chenega Enterprise Systems & Solutions, LLC

Chesapeake, VA

Chesapeake, VA | 180 awards | Top agency Department of Health and Human Services | NAICS 541611

$262,637,172

Sehlke Consulting LLC

Vienna, VA

Vienna, VA | 79 awards | Top agency General Services Administration | NAICS 541511

$187,683,390

Goldbelt C6, LLC

Chesapeake, VA

Chesapeake, VA | 349 awards | Top agency Department of Health and Human Services | NAICS 541990

$227,225,190

Prescient Edge Corporation

Mc Lean, VA

Mc Lean, VA | 78 awards | Top agency General Services Administration | NAICS 541715

$268,538,606

Cloud Lake Technology LLC

Herndon, VA

Herndon, VA | 32 awards | Top agency Department of Defense | NAICS 541519

$79,806,941

Cameo Consulting Group LLC

Rockville, MD

Rockville, MD | 80 awards | Top agency Department of Veterans Affairs | NAICS 541611

$37,737,863

Knowesis, Inc.

Fairfax, VA

Fairfax, VA | 39 awards | Top agency Department of Defense | NAICS 541611

$76,687,286

Barbaricum LLC

Washington, DC

Washington, DC | 101 awards | Top agency Department of Defense | NAICS 339999

$125,691,886

Page 2 of 3Prev 1 2 3 Next

Agency profile

Loading buyer-level contractor and category paths