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Home/Virginia/NAICS 561621/PSC R425

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NAICS 561621 and PSC R425 contractors in Virginia

Security Systems Services (except Locksmiths). SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Use this deeper state cross-code page to see which visible contractors sit in the overlap between these two lanes inside Virginia.

Virginia · NAICS 561621 · PSC R425
Last updated: April 8, 2026

Visible recipients

2

Mapped obligations

$1,976,160,058

Buyer overlap

4

Top recipients

Visible recipients in the Virginia overlap of NAICS 561621 and PSC R425

Serco INC

Herndon, VA

Serco INC is a federal category business profile based in Herndon, VA. The current public data layer shows $1,004,172,019 in visible federal obligations across 1,016 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 R499.

$1,625,493,048

Siemens Government Technologies INC

Arlington, VA

Siemens Government Technologies INC is a federal category business profile based in Arlington, VA. The current public data layer shows $111,989,171 in visible federal obligations across 227 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541512 (Computer Systems Design Services). The profile also shows meaningful product and service activity in PSC N059.

$350,667,010

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