Department of Homeland Security NAICS 541611 and PSC R499 contractors

Administrative Management and General Management Consulting Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541611 · PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$72,624,479,408

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541611 and PSC R499

Guidehouse LLP

Mc Lean, VA

Mc Lean, VA | 134 awards | Top agency Department of State | NAICS 541611

$2,824,608,749

Visionary Integration Professionals LLC

Folsom, CA

Folsom, CA | 15 awards | Top agency Department of Homeland Security | NAICS 541512

$66,473,877

Sev1tech, LLC

Woodbridge, VA

Woodbridge, VA | 225 awards | Top agency Department of Defense | NAICS 541712

$162,274,781

Kadiak LLC

Anchorage, AK

Anchorage, AK | 175 awards | Top agency Department of Defense | NAICS 541611

$242,109,207

Tatitlek Technologies, LLC

Anchorage, AK

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

$227,655,831

Reli Group INC

Windsor Mill, MD

Windsor Mill, MD | 119 awards | Top agency Department of Health and Human Services | NAICS 541611

$498,795,284

Tatitlek Federal Services LLC

Anchorage, AK

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

$501,562,291

Mantech Srs Technologies, Inc.

Herndon, VA

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

$520,078,107

Catapult Consultants LLC

Fredericksburg, VA

Fredericksburg, VA | 5 awards | Top agency Department of Defense | NAICS 541611

$26,728,938

Akima Global Logistics, LLC

Herndon, VA

Herndon, VA | 118 awards | Top agency Department of Defense | NAICS 561210

$17,768,471

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