NAICS 541990 and PSC AC65 contractors

All Other Professional, Scientific, and Technical Services. R&D- DEFENSE SYSTEM: ELECTRONICS/COMMUNICATION EQUIPMENT (OPERATIONAL SYSTEMS DEVELOPMENT). Use this cross-code page to see which visible federal contractors sit in the overlap between these two public category lanes.

NAICS 541990 + PSC AC65

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$91,941,114

State overlap

Top recipients

Visible recipients in the NAICS 541990 and PSC AC65 overlap

Mantech Systems Engineering Corporation

Fairfax, VA

Mantech Systems Engineering Corporation is a federal category business profile based in Fairfax, VA. The current public data layer shows $1,150,010,370 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.

$91,941,114