Department of Defense NAICS 541990 and PSC R499 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code overlap under Department of Defense.

Department of Defense · NAICS 541990 · PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$31,950,859,594

State overlap

Top recipients

Visible recipients in the Department of Defense overlap of NAICS 541990 and PSC R499

Noblis, Inc.

Reston, VA

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

$644,614,015

Chenega Government Consulting, LLC

Chesapeake, VA

Chesapeake, VA | 5 awards | Top agency Department of Energy | NAICS 541512

$170,677,238

Credence Management Solutions Limited Liability Company

Mclean, VA

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

$329,247,632

Govcio, LLC

Fairfax, VA

Fairfax, VA | 94 awards | Top agency Department of Veterans Affairs | NAICS 541512

$358,338,455

Peraton Risk Decision Inc.

Loveland, CO

Loveland, CO | 54 awards | Top agency Office of Personnel Management | NAICS 561611

$320,163,986

Serco Management Services, Inc.

Reston, VA

Reston, VA | 5 awards | Top agency Department of Transportation | NAICS 488111

$8,712,107

Guidehouse LLP

Mc Lean, VA

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

$1,435,589,451

Asrc Federal Technology Solutions, LLC

Reston, VA

Reston, VA | 144 awards | Top agency Department of Defense | NAICS 541611

$72,861,684

Siemens Government Technologies INC

Arlington, VA

Arlington, VA | 227 awards | Top agency Department of Defense | NAICS 541512

$660,478,780

Planned Systems International INC

Columbia, MD

Columbia, MD | 64 awards | Top agency Department of Defense | NAICS 541519

$342,493,806

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