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General Services Administration NAICS 541330 and PSC R425 contractors

Engineering Services. SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under General Services Administration.

General Services Administration · NAICS 541330 · PSC R425
Last updated: April 6, 2026

Visible recipients

69

Mapped obligations

$317,577,705,408

State overlap

4

Top recipients

Visible recipients in the General Services Administration overlap of NAICS 541330 and PSC R425

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.

$483,493,943

Redhorse Corporation

Arlington, VA

Redhorse Corporation is a federal category business profile based in Arlington, VA. The current public data layer shows $30,311,976 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 611430 (Professional and Management Development Training). The profile also shows meaningful product and service activity in PSC R499.

$115,330,194

Mantech Gray Hawk Systems, Inc.

Falls Church, VA

Mantech Gray Hawk Systems, Inc. is a federal category business profile based in Falls Church, VA. The current public data layer shows $28,570,924 in visible federal obligations across 5 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.

$32,190,827

Vse Corporation

Miramar, FL

Vse Corporation is a federal category business profile based in Miramar, FL. The current public data layer shows $27,628,463 in visible federal obligations across 147 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 336611 (Ship Building and Repairing). The profile also shows meaningful product and service activity in PSC J998.

$613,047,460

Bixal Solutions Incorporated

Rileyville, VA

Bixal Solutions Incorporated is a federal category business profile based in Rileyville, VA. The current public data layer shows $26,166,363 in visible federal obligations across 98 awards or transactions. Department of Health and Human Services appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541511 (Custom Computer Programming Services). The profile also shows meaningful product and service activity in PSC R499.

$66,524,211

Kihomac INC

Reston, VA

Kihomac INC is a federal asian pacific american owned business profile based in Reston, VA. The current public data layer shows $23,005,263 in visible federal obligations across 151 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.

$624,444,622

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.

$149,050,813

Advanced It Concepts, LLC

Orlando, FL

Advanced It Concepts, LLC is a federal 8a program participant profile based in Orlando, FL. The current public data layer shows $19,005,268 in visible federal obligations across 18 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541519 (Other Computer Related Services). The profile also shows meaningful product and service activity in PSC D399.

$31,553,743

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.

$754,593,655

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.

$46,662,202
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