Agency + NAICS page

Department of Defense NAICS 541330 contractors

Engineering Services. Use this buyer-scoped industry page to see which visible contractors sit closest to this NAICS lane under Department of Defense.

Agency: Department of Defense
Last updated: April 8, 2026

Visible recipients

371

Mapped obligations

$380,719,070,415

Top PSC links

4

Top recipients

Visible recipients tied to Department of Defense and NAICS 541330

Mantech Mission, Cyber And Technology Solutions, Inc.

Fairfax, VA

Mantech Mission, Cyber And Technology Solutions, Inc. is a federal category business profile based in Fairfax, VA. The current public data layer shows $407,177,745 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 541690 (Other Scientific and Technical Consulting Services). The profile also shows meaningful product and service activity in PSC R499.

$87,646,060

Pae Government Services, Inc.

Chantilly, VA

Pae Government Services, Inc. is a federal category business profile based in Chantilly, VA. The current public data layer shows $390,273,510 in visible federal obligations across 943 awards or transactions. Department of State appears as the strongest visible awarding agency. Top industry concentration is in NAICS 561210 (Facilities Support Services). The profile also shows meaningful product and service activity in PSC S216.

$595,486,483

Hii Mission Technologies CORP

Willowbrook, IL

Hii Mission Technologies CORP is a federal category business profile based in Willowbrook, IL. The current public data layer shows $380,690,397 in visible federal obligations across 464 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 AZ12.

$5,892,249,412

Ecc International, LLC

Burlingame, CA

Ecc International, LLC is a federal category business profile based in Burlingame, CA. The current public data layer shows $374,253,810 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 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC S216.

$37,480

M. C. Dean, Inc.

Tysons, VA

M. C. Dean, Inc. is a federal category business profile based in Tysons, VA. The current public data layer shows $366,425,260 in visible federal obligations across 1,299 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 J058.

$1,574,954,186

Cae USA Mission Solutions Inc.

Tampa, FL

Cae USA Mission Solutions Inc. is a federal category business profile based in Tampa, FL. The current public data layer shows $357,258,286 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 336413 (Other Aircraft Parts and Auxiliary Equipment Manufacturing). The profile also shows meaningful product and service activity in PSC J069.

$20,496,474

Kiewit Building Group Inc.

Lone Tree, CO

Kiewit Building Group Inc. is a federal category business profile based in Lone Tree, CO. The current public data layer shows $347,353,724 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 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y163.

$0

Gilbane Building Company

Baltimore, MD

Gilbane Building Company is a federal category business profile based in Baltimore, MD. The current public data layer shows $346,060,830 in visible federal obligations across 5 awards or transactions. Department of Health and Human Services appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y142.

$71,181,563

Caci Nss, LLC

Reston, VA

Caci Nss, LLC is a federal category business profile based in Reston, VA. The current public data layer shows $345,058,161 in visible federal obligations across 109 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541519 (Other Computer Related Services). The profile also shows meaningful product and service activity in PSC R499.

$2,683,706,714

Magellan Federal, Inc.

Arlington, VA

Magellan Federal, Inc. is a federal category business profile based in Arlington, VA. The current public data layer shows $341,270,986 in visible federal obligations across 118 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 624190 (Other Individual and Family Services). The profile also shows meaningful product and service activity in PSC G099.

$96,813,117
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