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Department of Homeland Security NAICS 541990 and PSC R499 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- PROFESSIONAL: OTHER. 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 541990 · PSC R499
Last updated: April 8, 2026

Visible recipients

42

Mapped obligations

$16,558,641,505

State overlap

4

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541990 and PSC R499

Govcio, LLC

Fairfax, VA

Govcio, LLC is a federal category business profile based in Fairfax, VA. The current public data layer shows $220,313,179 in visible federal obligations across 94 awards or transactions. Department of Veterans Affairs 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.

$358,338,455

Peraton Risk Decision Inc.

Loveland, CO

Peraton Risk Decision Inc. is a federal category business profile based in Loveland, CO. The current public data layer shows $210,620,024 in visible federal obligations across 54 awards or transactions. Office of Personnel Management appears as the strongest visible awarding agency. Top industry concentration is in NAICS 561611 (Investigation and Personal Background Check Services). The profile also shows meaningful product and service activity in PSC R422.

$320,163,986

Guidehouse LLP

Mc Lean, VA

Guidehouse LLP is a federal category business profile based in Mc Lean, VA. The current public data layer shows $140,750,981 in visible federal obligations across 132 awards or transactions. Department of State appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541611 (Administrative Management and General Management Consulting Services). The profile also shows meaningful product and service activity in PSC R499.

$1,434,515,758

Reli Group INC

Windsor Mill, MD

Reli Group INC is a federal 8a program participant profile based in Windsor Mill, MD. The current public data layer shows $79,433,948 in visible federal obligations across 119 awards or transactions. Department of Health and Human Services appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541611 (Administrative Management and General Management Consulting Services). The profile also shows meaningful product and service activity in PSC R408.

$185,329,799

Akima Systems Engineering LLC

Herndon, VA

Akima Systems Engineering LLC is a federal 8a program participant profile based in Herndon, VA. The current public data layer shows $76,312,079 in visible federal obligations across 232 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.

$38,590,052

Mantech Srs Technologies, Inc.

Herndon, VA

Mantech Srs Technologies, Inc. is a federal category business profile based in Herndon, VA. The current public data layer shows $74,933,149 in visible federal obligations across 77 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.

$304,562,673

Catapult Consultants LLC

Fredericksburg, VA

Catapult Consultants LLC is a federal category business profile based in Fredericksburg, VA. The current public data layer shows $73,414,716 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 541611 (Administrative Management and General Management Consulting Services). The profile also shows meaningful product and service activity in PSC R703.

$21,328,808

Akima Global Logistics, LLC

Herndon, VA

Akima Global Logistics, LLC is a federal 8a program participant profile based in Herndon, VA. The current public data layer shows $73,304,126 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 561210 (Facilities Support Services). The profile also shows meaningful product and service activity in PSC V119.

$24,242,498

Ensco INC

Vienna, VA

Ensco INC is a federal category business profile based in Vienna, VA. The current public data layer shows $71,897,543 in visible federal obligations across 124 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541712 (Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)). The profile also shows meaningful product and service activity in PSC AR16.

$347,523,104

Analytic Services Inc.

Arlington, VA

Analytic Services Inc. is a federal category business profile based in Arlington, VA. The current public data layer shows $69,503,700 in visible federal obligations across 91 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541611 (Administrative Management and General Management Consulting Services). The profile also shows meaningful product and service activity in PSC R499.

$848,596,841
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