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Department of Defense NAICS 541990 and PSC R499 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- PROFESSIONAL: OTHER. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of Defense.

Department of Defense · NAICS 541990 · PSC R499
Last updated: April 8, 2026

Visible recipients

91

Mapped obligations

$31,551,278,184

State overlap

4

Top recipients

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

Leidos Management Systems Designers, Inc.

Gaithersburg, MD

Leidos Management Systems Designers, Inc. is a federal category business profile based in Gaithersburg, MD. The current public data layer shows -$1,036,062 in visible federal obligations across 9 awards or transactions. Department of the Treasury appears as the strongest visible awarding agency. Top industry concentration is in NAICS 443120 (Computer and Software Stores). The profile also shows meaningful product and service activity in PSC D308.

$158,396,496
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