Department of Homeland Security NAICS 541990 and PSC R699 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- ADMINISTRATIVE: OTHER. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541990 · PSC R699

Last updated: April 19, 2026

Visible recipients

Mapped obligations

$1,579,972,623

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541990 and PSC R699

Caci Intelligence Solutions, LLC

Herndon, VA

Herndon, VA | 5 awards | Top agency Department of Defense | NAICS 541990

$398,967,454

Credence Management Solutions Limited Liability Company

Mclean, VA

Mclean, VA | 222 awards | Top agency Department of Defense | NAICS 541330

$358,547,432

Axient LLC

Arlington, VA

Arlington, VA | 83 awards | Top agency Department of Defense | NAICS 541330

$183,781,395

Akima Systems Engineering LLC

Herndon, VA

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

$45,007,905

Chenega Enterprise Systems & Solutions, LLC

Chesapeake, VA

Chesapeake, VA | 180 awards | Top agency Department of Health and Human Services | NAICS 541611

$102,254,208

Cherokee Nation Government Solutions LLC

Tulsa, OK

Tulsa, OK | 56 awards | Top agency Department of Defense | NAICS 541330

$21,362,315

Fedwriters, Inc.

Fairfax, VA

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

$41,100,534

Bowhead Mission Solutions, LLC

Springfield, VA

Springfield, VA | 47 awards | Top agency General Services Administration | NAICS 541330

$41,803,472

Old Harbor Solutions LLC

Anchorage, AK

Anchorage, AK | 66 awards | Top agency Department of Defense | NAICS 541611

$9,435,464

Knowesis, Inc.

Fairfax, VA

Fairfax, VA | 39 awards | Top agency Department of Defense | NAICS 541611

$129,448,080

Page 1 of 21 2 Next

Agency profile

Loading buyer-level contractor and category paths