General Services Administration NAICS 488999 and PSC R425 contractors in Virginia

All Other Support Activities for Transportation. SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Use this deepest state-buyer cross-code page to see which visible contractors sit in the exact overlap of buyer, geography, industry, and product-service lane.

Virginia · General Services Administration

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$3,350,530,057

Cross-code depth

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Top recipients

Visible recipients tied to General Services Administration, Virginia, NAICS 488999, and PSC R425

Mantech Advanced Systems International, Inc.

Herndon, VA

Mantech Advanced Systems International, Inc. is a federal category business profile based in Herndon, VA. The current public data layer shows $878,752,678 in visible federal obligations across 684 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.

$3,350,530,057