Department of Defense PSC R499 contractors

SUPPORT- PROFESSIONAL: OTHER. Contractors in this PSC lane under Department of Defense.

Agency: Department of Defense

Last updated: April 20, 2026

Visible recipients

315

Mapped obligations

$123,377,461,196

Visible recipients tied to Department of Defense and PSC R499

Paragon Systems INC

Herndon, VA

Herndon, VA | 691 awards | Top agency Department of Homeland Security | NAICS 561612

$200,444,317

Lmi Consulting, LLC

Tysons Corner, VA

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

$959,991,791

Amentum Technology, Inc.

Tullahoma, TN

Tullahoma, TN | 491 awards | Top agency National Aeronautics and Space Administration | NAICS 541712

$1,232,596,845

Cherokee Nation Technology Solutions LLC

Tulsa, OK

Tulsa, OK | 20 awards | Top agency Department of Defense | NAICS 541620

$200,333,649

Goldbelt Wolf, LLC

Alexandria, VA

Alexandria, VA | 20 awards | Top agency Department of Health and Human Services | NAICS 332995

$50,172,198

Mantech Mission, Cyber And Technology Solutions, Inc.

Fairfax, VA

Fairfax, VA | 5 awards | Top agency Department of Defense | NAICS 541690

$153,776,774

Amentum National Security Programs, INC

Chantilly, VA

Chantilly, VA | 5 awards | Top agency Department of Defense | NAICS 541990

$231,161,556

Ecc Constructors LLC

Burlingame, CA

Burlingame, CA | 61 awards | Top agency Department of Defense | NAICS 562119

$2,713,525

Hii Mission Technologies CORP

Willowbrook, IL

Willowbrook, IL | 464 awards | Top agency Department of Defense | NAICS 541330

$4,279,238,149

Caci Nss, LLC

Reston, VA

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

$2,011,216,856

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