State + agency + NAICS page

Department of the Interior NAICS 541330 contractors in California

Engineering Services. Use this deeper state-buyer-industry page to see which visible contractors sit closest to this exact overlap in the public AwardRegistry layer.

California + Department of the Interior
Last updated: April 8, 2026

Visible recipients

7

Mapped obligations

$1,611,695,830

Top PSC links

4

Top recipients

Visible recipients tied to Department of the Interior, California, and NAICS 541330

The Aerospace Corporation

El Segundo, CA

The Aerospace Corporation is a federal category business profile based in El Segundo, CA. The current public data layer shows $830,309,545 in visible federal obligations across 527 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541715 (Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)). The profile also shows meaningful product and service activity in PSC AR25.

$47,493,893

Tetra Tech Ec, Inc.

San Diego, CA

Tetra Tech Ec, Inc. is a federal category business profile based in San Diego, CA. The current public data layer shows $418,648,162 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 562910 (Remediation Services). The profile also shows meaningful product and service activity in PSC F108.

$83,865,987

L3harris Interstate Electronics Corporation

Yorba Linda, CA

L3harris Interstate Electronics Corporation is a federal category business profile based in Yorba Linda, CA. The current public data layer shows $138,604,778 in visible federal obligations across 40 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 H914.

$1,104,254,164

Cubic Defense Applications, Inc.

San Diego, CA

Cubic Defense Applications, Inc. is a federal category business profile based in San Diego, CA. The current public data layer shows $65,172,719 in visible federal obligations across 153 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 334220 (Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing). The profile also shows meaningful product and service activity in PSC 6910.

$101,198,708

Kleinfelder INC

Rancho Cordova, CA

Kleinfelder INC is a federal category business profile based in Rancho Cordova, CA. The current public data layer shows $30,745,589 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 C211.

$23,847,278

Moffatt & Nichol

Long Beach, CA

Moffatt & Nichol is a federal category business profile based in Long Beach, CA. The current public data layer shows $30,284,825 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 C219.

$247,094,405

Brown And Caldwell

San Diego, CA

Brown And Caldwell is a federal category business profile based in San Diego, CA. The current public data layer shows $3,910,103 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 C211.

$3,941,395