State + agency + NAICS page

Department of Homeland Security NAICS 541519 contractors in Virginia

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

Virginia + Department of Homeland Security
Last updated: April 6, 2026

Visible recipients

49

Mapped obligations

$37,089,597,453

Top PSC links

4

Top recipients

Visible recipients tied to Department of Homeland Security, Virginia, and NAICS 541519

Mantech Information Systems & Technology Corporation

Fairfax, VA

Mantech Information Systems & Technology Corporation is a federal category business profile based in Fairfax, VA. The current public data layer shows $165,706,223 in visible federal obligations across 5 awards or transactions. Department of Justice 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 D399.

$21,095,839

Avantus Federal LLC

Mc Lean, VA

Avantus Federal LLC is a federal category business profile based in Mc Lean, VA. The current public data layer shows $158,730,910 in visible federal obligations across 95 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 R408.

$93,559,774

Rei Systems, Inc.

Chantilly, VA

Rei Systems, Inc. is a federal category business profile based in Chantilly, VA. The current public data layer shows $125,344,195 in visible federal obligations across 169 awards or transactions. Department of Health and Human Services 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 DA01.

$795,021,335

Guidehouse Digital LLC

Mc Lean, VA

Guidehouse Digital LLC is a federal category business profile based in Mc Lean, VA. The current public data layer shows $116,712,874 in visible federal obligations across 385 awards or transactions. Department of Homeland Security 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 D318.

$169,246,546

General Dynamics One Source LLC

Falls Church, VA

General Dynamics One Source LLC is a federal category business profile based in Falls Church, VA. The current public data layer shows $91,059,554 in visible federal obligations across 162 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.

$414,147,474

Mantech Mbi Inc.

Fairfax, VA

Mantech Mbi Inc. is a federal category business profile based in Fairfax, VA. The current public data layer shows $88,973,980 in visible federal obligations across 5 awards or transactions. Department of Commerce 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 R408.

$65,948,038

Karsun Solutions LLC

Herndon, VA

Karsun Solutions LLC is a federal category business profile based in Herndon, VA. The current public data layer shows $83,844,223 in visible federal obligations across 125 awards or transactions. Department of Transportation 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 R425.

$539,483,103

Semanticbits LLC

Reston, VA

Semanticbits LLC is a federal category business profile based in Reston, VA. The current public data layer shows $81,323,768 in visible federal obligations across 54 awards or transactions. Department of Health and Human Services 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 D399.

$868,366,004

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 235 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.

$19,226,202

Alpha Omega Integration LLC

Vienna, VA

Alpha Omega Integration LLC is a federal category business profile based in Vienna, VA. The current public data layer shows $68,539,857 in visible federal obligations across 91 awards or transactions. Department of Homeland Security 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 DD01.

$17,524,873
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