Department of Homeland Security NAICS 541519 and PSC R425 contractors

Other Computer Related Services. SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541519 · PSC R425

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$57,161,035,885

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541519 and PSC R425

General Dynamics Information Technology, Inc.

Falls Church, VA

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

$14,804,735,451

Leidos, Inc.

Reston, VA

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

$19,198,654,311

Bae Systems Technology Solutions & Services Inc.

Rockville, MD

Rockville, MD | 1,291 awards | Top agency Department of Defense | NAICS 541330

$2,735,243,607

Mantech Systems Engineering Corporation

Fairfax, VA

Fairfax, VA | 5 awards | Top agency Department of Defense | NAICS 541330

$464,076,535

Chenega Federal Systems, LLC

Bethesda, MD

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

$306,811,451

Ecs Federal, LLC

Fairfax, VA

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

$963,088,835

Microsoft Corporation

Redmond, WA

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

$4,208,431,967

Caci Nss, LLC

Reston, VA

Reston, VA | 109 awards | Top agency Department of Defense | NAICS 541519

$3,857,362,295

Noblis, Inc.

Reston, VA

Reston, VA | 372 awards | Top agency Department of Transportation | NAICS 541330

$1,382,220,118

Network Security Systems Plus, INC

Mc Lean, VA

Mc Lean, VA | 6 awards | Top agency Department of Defense | NAICS 541512

$60,823,741

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