Department of Homeland Security NAICS 541330 contractors

Engineering Services. Contractors in this NAICS lane under Department of Homeland Security.

Agency: Department of Homeland Security

Last updated: April 19, 2026

Visible recipients

163

Mapped obligations

$236,564,446,561

Visible recipients tied to Department of Homeland Security and NAICS 541330

Tatitlek Technologies, LLC

Anchorage, AK

Anchorage, AK | 238 awards | Top agency Department of State | NAICS 561210

$284,022,823

Karsun Solutions LLC

Herndon, VA

Herndon, VA | 125 awards | Top agency Department of Transportation | NAICS 541519

$2,501

Tatitlek Federal Services LLC

Anchorage, AK

Anchorage, AK | 230 awards | Top agency Department of State | NAICS 541611

$112,347,587

Akima Systems Engineering LLC

Herndon, VA

Herndon, VA | 233 awards | Top agency Department of Defense | NAICS 541512

$84,224,714

Wsp USA Environment & Infrastructure Inc.

Blue Bell, PA

Blue Bell, PA | 309 awards | Top agency Department of Defense | NAICS 236220

$226,190,146

Mantech Srs Technologies, Inc.

Herndon, VA

Herndon, VA | 76 awards | Top agency Department of Defense | NAICS 541330

$470,996,848

Lb & B Associates INC

Columbia, MD

Columbia, MD | 249 awards | Top agency Department of Defense | NAICS 561210

$402,447,991

Ensco INC

Vienna, VA

Vienna, VA | 124 awards | Top agency Department of Defense | NAICS 541712

$261,656,675

Analytic Services Inc.

Arlington, VA

Arlington, VA | 91 awards | Top agency Department of Defense | NAICS 541611

$137,301,525

Imagine One Technology & Management LTD

Lexington Park, MD

Lexington Park, MD | 49 awards | Top agency Department of Defense | NAICS 541330

$472,750,803

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