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Department of Homeland Security NAICS 541330 and PSC D399 contractors

Engineering Services. IT AND TELECOM- OTHER IT AND TELECOMMUNICATIONS. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of Homeland Security.

Department of Homeland Security · NAICS 541330 · PSC D399
Last updated: April 5, 2026

Visible recipients

22

Mapped obligations

$118,952,342,410

State overlap

4

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541330 and PSC D399

Booz Allen Hamilton INC

Mclean, VA

Booz Allen Hamilton INC is a federal category business profile based in Mclean, VA. The current public data layer shows $5,544,653,120 in visible federal obligations across 3,971 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 R499.

$29,132,765,333

General Dynamics Information Technology, Inc.

Falls Church, VA

General Dynamics Information Technology, Inc. is a federal category business profile based in Falls Church, VA. The current public data layer shows $4,247,568,500 in visible federal obligations across 3,214 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 D399.

$32,683,416,561

Caci, Inc. - Federal

Chantilly, VA

Caci, Inc. - Federal is a federal category business profile based in Chantilly, VA. The current public data layer shows $3,203,901,382 in visible federal obligations across 1,150 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.

$7,575,316,170

Deloitte Consulting LLP

Arlington, VA

Deloitte Consulting LLP is a federal category business profile based in Arlington, VA. The current public data layer shows $2,418,891,705 in visible federal obligations across 1,842 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 R408.

$4,475,229,480

Leidos, Inc.

Reston, VA

Leidos, Inc. is a federal category business profile based in Reston, VA. The current public data layer shows $2,338,754,223 in visible federal obligations across 9,802 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.

$26,552,306,430

Mantech Advanced Systems International, Inc.

Herndon, VA

Mantech Advanced Systems International, Inc. is a federal category business profile based in Herndon, VA. The current public data layer shows $879,999,975 in visible federal obligations across 686 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.

$4,624,258,545

Ecs Federal, LLC

Fairfax, VA

Ecs Federal, LLC is a federal category business profile based in Fairfax, VA. The current public data layer shows $553,440,366 in visible federal obligations across 405 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.

$1,298,414,601

Jacobs Technology Inc.

Huntsville, AL

Jacobs Technology Inc. is a federal category business profile based in Huntsville, AL. The current public data layer shows $477,016,644 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 541511 (Custom Computer Programming Services). The profile also shows meaningful product and service activity in PSC D399.

$762,568,370

Caci Nss, LLC

Reston, VA

Caci Nss, LLC is a federal category business profile based in Reston, VA. The current public data layer shows $342,571,801 in visible federal obligations across 110 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.

$3,867,715,049

Goldbelt Falcon LLC

Chesapeake, VA

Goldbelt Falcon LLC is a federal 8a program participant profile based in Chesapeake, VA. The current public data layer shows $325,823,388 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 811219 (Other Electronic and Precision Equipment Repair and Maintenance). The profile also shows meaningful product and service activity in PSC J052.

$52,568,608
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