Department of Homeland Security NAICS 541519 and PSC R799 contractors

Other Computer Related Services. SUPPORT- MANAGEMENT: OTHER. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541519 · PSC R799

Last updated: April 12, 2026

Visible recipients

Mapped obligations

$7,706,153,347

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541519 and PSC R799

Deloitte Consulting LLP

Arlington, VA

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

$2,643,989,990

Lmi Consulting, LLC

Tysons Corner, VA

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

$88,314,422

Mantech Mission, Cyber And Technology Solutions, Inc.

Fairfax, VA

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

$76,429,053

Noblis, Inc.

Reston, VA

Reston, VA | 372 awards | Top agency Department of Transportation | NAICS 541330

$690,606,968

Avantus Federal LLC

Mc Lean, VA

Mc Lean, VA | 95 awards | Top agency Department of Defense | NAICS 541330

$362,500,430

Guidehouse Digital LLC

Mc Lean, VA

Mc Lean, VA | 389 awards | Top agency Department of Homeland Security | NAICS 541512

$326,069,354

Rei Systems, Inc.

Chantilly, VA

Chantilly, VA | 168 awards | Top agency Department of Health and Human Services | NAICS 541519

$855,639,242

Kadiak LLC

Anchorage, AK

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

$201,061,031

Macaulay-brown, Inc.

Dayton, OH

Dayton, OH | 5 awards | Top agency General Services Administration | NAICS 541511

$2,957,780

Integrated Finance And Accounting Solutions, Llc.

Washington, DC

Washington, DC | 193 awards | Top agency Department of State | NAICS 541219

$31,003,109

Page 1 of 21 2 Next

Agency profile

Loading buyer-level contractor and category paths