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Department of Defense NAICS 541990 and PSC AD24 contractors

All Other Professional, Scientific, and Technical Services. R&D- DEFENSE OTHER: SERVICES (ENGINEERING DEVELOPMENT). 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 AD24
Last updated: April 8, 2026

Visible recipients

4

Mapped obligations

$976,421,989

State overlap

3

Top recipients

Visible recipients in the Department of Defense overlap of NAICS 541990 and PSC AD24

Mantech Telecommunications And Information Systems Corporation

Fairfax, VA

Mantech Telecommunications And Information Systems Corporation is a federal category business profile based in Fairfax, VA. The current public data layer shows $3,297,715,310 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 1345.

$287,891,598

Noblis, Inc.

Reston, VA

Noblis, Inc. is a federal category business profile based in Reston, VA. The current public data layer shows $263,857,681 in visible federal obligations across 372 awards or transactions. Department of Transportation 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.

$622,388,784

Aecom Energy & Construction, Inc.

Greenwood Village, CO

Aecom Energy & Construction, Inc. is a federal category business profile based in Greenwood Village, CO. The current public data layer shows $254,563,037 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 237990 (Other Heavy and Civil Engineering Construction). The profile also shows meaningful product and service activity in PSC Z2KA.

$20,724,764

Noblis Msd LLC

Philadelphia, PA

Noblis Msd LLC is a federal category business profile based in Philadelphia, PA. The current public data layer shows $70,510,868 in visible federal obligations across 481 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.

$45,416,843