Department of Homeland Security NAICS 541690 and PSC R425 contractors

Other Scientific and Technical Consulting Services. SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541690 · PSC R425

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$2,168,045,359

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541690 and PSC R425

Chenega Federal Systems, LLC

Bethesda, MD

Bethesda, MD | 20 awards | Top agency Department of Defense | NAICS 541330

$272,755,979

Noblis, Inc.

Reston, VA

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

$1,058,005,207

Tatitlek Technologies, LLC

Anchorage, AK

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

$191,090,615

Akima Systems Engineering LLC

Herndon, VA

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

$108,106,720

Integral Federal, Inc.

Mc Lean, VA

Mc Lean, VA | 72 awards | Top agency Department of Defense | NAICS 333244

$159,078,062

Fedwriters, Inc.

Fairfax, VA

Fairfax, VA | 256 awards | Top agency Department of Commerce | NAICS 541611

$51,032,025

Ho-chunk Shared Services Company

Winnebago, NE

Winnebago, NE | 50 awards | Top agency Department of Defense | NAICS 541611

$44,338,514

Bluepath Labs LLC

Washington, DC

Washington, DC | 104 awards | Top agency Department of Energy | NAICS 541990

$16,891,880

Advanced Technologies And Laboratories (atl) International, Inc.

Gaithersburg, MD

Gaithersburg, MD | 36 awards | Top agency Department of Energy | NAICS 562910

$12,515,217

Zantech It Services, Inc.

Reston, VA

Reston, VA | 51 awards | Top agency Department of Homeland Security | NAICS 541611

$84,916,648

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