Department of Defense NAICS 541330 and PSC R499 contractors in Maryland

Engineering Services. SUPPORT- PROFESSIONAL: OTHER. Deepest cross-filter overlap.

Maryland · Department of Defense

Last updated: April 17, 2026

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$32,713,111,392

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Top recipients

Visible recipients tied to Department of Defense, Maryland, NAICS 541330, and PSC R499

A Square Group LLC

Frederick, MD

Frederick, MD | 45 awards | Top agency Department of Health and Human Services | NAICS 541512

$85,806,136

Nika Technologies INC

Rockville, MD

Rockville, MD | 40 awards | Top agency Department of Defense | NAICS 561210

$290,861,146

Ellumen, Inc.

Silver Spring, MD

Silver Spring, MD | 52 awards | Top agency Department of Defense | NAICS 541512

$29,217,486

Systems Plus, Inc.

Rockville, MD

Rockville, MD | 56 awards | Top agency Department of Defense | NAICS 541330

$730,051,524

Leidos Innovations Corporation

Gaithersburg, MD

Gaithersburg, MD | 2 awards | Top agency Department of Transportation | NAICS 334290

$13,988,010

Aretum LLC

Bethesda, MD

Bethesda, MD | 10 awards | Top agency Department of Veterans Affairs | NAICS 513210

$3,500

Arctic Slope Technical Services, Inc.

Beltsville, MD

Beltsville, MD | 126 awards | Top agency National Aeronautics and Space Administration | NAICS 541712

$240,180,570

Lockheed Martin Services, LLC

Gaithersburg, MD

Gaithersburg, MD | 5 awards | Top agency Department of Transportation | NAICS 541512

$2,940,371,732

Booz Allen Hamilton Engineering Services, LLC

Annapolis Junction, MD

Annapolis Junction, MD | 11 awards | Top agency Department of Defense | NAICS 541330

$2,377,902,739

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