NAICS + PSC page

NAICS 541715 and PSC R425 contractors

Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology). SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Use this cross-code page to see which visible federal contractors sit in the overlap between these two public category lanes.

NAICS 541715 + PSC R425
Last updated: April 6, 2026

Visible recipients

26

Mapped obligations

$67,062,597,145

State overlap

0

Top recipients

Visible recipients in the NAICS 541715 and PSC R425 overlap

Riverside Research Institute

New York, NY

Riverside Research Institute is a federal category business profile based in New York, NY. The current public data layer shows $31,384,228 in visible federal obligations across 44 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541712 (Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)). The profile also shows meaningful product and service activity in PSC R499.

$444,470,320

Trideum Corporation

Huntsville, AL

Trideum Corporation is a federal category business profile based in Huntsville, AL. The current public data layer shows $19,305,027 in visible federal obligations across 59 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC R425.

$102,106,867

Ironmountain Solutions, LLC

Huntsville, AL

Ironmountain Solutions, LLC is a federal category business profile based in Huntsville, AL. The current public data layer shows $16,347,000 in visible federal obligations across 72 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC R425.

$377,300,827

Dt Professional Services, LLC

Moorpark, CA

Dt Professional Services, LLC is a federal 8a program participant profile based in Moorpark, CA. The current public data layer shows $13,423,477 in visible federal obligations across 59 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC R425.

$23,014,172

Barbaricum LLC

Washington, DC

Barbaricum LLC is a federal category business profile based in Washington, DC. The current public data layer shows $7,769,347 in visible federal obligations across 101 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 339999 (All Other Miscellaneous Manufacturing). The profile also shows meaningful product and service activity in PSC R499.

$115,968,749

Southland Industries

Sterling, VA

Southland Industries is a federal category business profile based in Sterling, VA. The current public data layer shows $4,836,806 in visible federal obligations across 15 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC R425.

$49,120,978
Page 3 of 3Prev123