Department of Homeland Security NAICS 541519 and PSC D399 contractors

Other Computer Related Services. IT AND TELECOM- OTHER IT AND TELECOMMUNICATIONS. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541519 · PSC D399

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$86,269,481,410

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541519 and PSC D399

General Dynamics Information Technology, Inc.

Falls Church, VA

Falls Church, VA | 3,177 awards | Top agency Department of Defense | NAICS 541512

$20,188,592,821

Deloitte Consulting LLP

Arlington, VA

Arlington, VA | 1,829 awards | Top agency Department of Defense | NAICS 541512

$3,889,918,967

Leidos, Inc.

Reston, VA

Reston, VA | 9,621 awards | Top agency Department of Defense | NAICS 541512

$16,213,412,629

Peraton Enterprise Solutions LLC

Chantilly, VA

Chantilly, VA | 415 awards | Top agency Department of Defense | NAICS 541512

$21,575,815,952

Chenega Federal Systems, LLC

Bethesda, MD

Bethesda, MD | 20 awards | Top agency Department of Defense | NAICS 541330

$186,802,002

Hms Technologies, Inc.

Martinsburg, WV

Martinsburg, WV | 5 awards | Top agency Department of Veterans Affairs | NAICS 541512

$224,625,627

Ecs Federal, LLC

Fairfax, VA

Fairfax, VA | 401 awards | Top agency Department of Defense | NAICS 541512

$801,313,140

Acuity INC

Reston, VA

Reston, VA | 24 awards | Top agency Department of State | NAICS 541512

$274,324,488

Microsoft Corporation

Redmond, WA

Redmond, WA | 514 awards | Top agency Department of Defense | NAICS 541512

$1,665,445,162

Peraton Healthcare Solutions LLC

Herndon, VA

Herndon, VA | 5 awards | Top agency Department of Veterans Affairs | NAICS 541512

$68,930,855

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