Department of Homeland Security NAICS 561110 and PSC R499 contractors

Office Administrative Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 561110 · PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$2,534,938,003

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 561110 and PSC R499

Alutiiq International Solutions, LLC

Anchorage, AK

Anchorage, AK | 20 awards | Top agency Department of Defense | NAICS 236220

$319,205,174

Lmi Consulting, LLC

Tysons Corner, VA

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

$1,021,800,711

Catapult Consultants LLC

Fredericksburg, VA

Fredericksburg, VA | 5 awards | Top agency Department of Defense | NAICS 541611

$11,542,026

Brillient Corporation

Reston, VA

Reston, VA | 55 awards | Top agency Department of Homeland Security | NAICS 561210

$323,416,504

Sierra7, Inc.

Mclean, VA

Mclean, VA | 141 awards | Top agency Department of Veterans Affairs | NAICS 541512

$66,868,578

Cloud Lake Technology LLC

Herndon, VA

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

$77,490,807

Fedwriters, Inc.

Fairfax, VA

Fairfax, VA | 256 awards | Top agency Department of Commerce | NAICS 541611

$27,030,049

Highlight Technologies, Inc.

Fairfax, VA

Fairfax, VA | 57 awards | Top agency Small Business Administration | NAICS 541611

$501,881,242

Dsfederal, INC

Rockville, MD

Rockville, MD | 66 awards | Top agency Department of Health and Human Services | NAICS 541511

$108,148,687

Cameo Consulting Group LLC

Rockville, MD

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

$38,093,387

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