NAICS 541990 and PSC AD94 contractors

All Other Professional, Scientific, and Technical Services. R&D- DEFENSE OTHER: OTHER (ENGINEERING 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 AD94

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$666,995,627

State overlap

Top recipients

Visible recipients in the NAICS 541990 and PSC AD94 overlap

Ecs Federal, LLC

Fairfax, VA

Ecs Federal, LLC is a federal category business profile based in Fairfax, VA. The current public data layer shows $553,486,130 in visible federal obligations across 401 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 R425.

$666,995,627