Department of Defense NAICS 541330 contractors

Engineering Services. Contractors in this NAICS lane under Department of Defense.

Agency: Department of Defense

Last updated: April 19, 2026

Visible recipients

391

Mapped obligations

$384,687,047,787

Visible recipients tied to Department of Defense and NAICS 541330

Caci, Inc. - Federal

Chantilly, VA

Chantilly, VA | 1,121 awards | Top agency Department of Defense | NAICS 541512

$4,754,541,713

Mantech Sensor Technologies, Inc.

Belcamp, MD

Belcamp, MD | 5 awards | Top agency Department of Defense | NAICS 541330

$3,186,560,546

Amentum Services, Inc.

Chantilly, VA

Chantilly, VA | 1,909 awards | Top agency Department of Defense | NAICS 561210

$4,263,441,029

Huntington Ingalls INC

Newport News, VA

Newport News, VA | 576 awards | Top agency Department of Defense | NAICS 336611

$409,539,111

Deloitte Consulting LLP

Arlington, VA

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

$1,864,358,266

Leidos, Inc.

Reston, VA

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

$16,908,888,817

Loyal Source Government Services LLC

Orlando, FL

Orlando, FL | 96 awards | Top agency Department of Veterans Affairs | NAICS 621111

$36,264,045

Peraton Inc.

Herndon, VA

Herndon, VA | 1,140 awards | Top agency Department of Defense | NAICS 541330

$4,266,373,876

Battelle Memorial Institute

Richland, WA

Richland, WA | 103 awards | Top agency Department of Energy | NAICS 541710

$971,040,247

Bell Textron INC

Fort Worth, TX

Fort Worth, TX | 1,341 awards | Top agency Department of Defense | NAICS 336411

$145,896,002

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