Agency + NAICS page

Department of Homeland Security NAICS 541211 contractors

Offices of Certified Public Accountants. Use this buyer-scoped industry page to see which visible contractors sit closest to this NAICS lane under Department of Homeland Security.

Agency: Department of Homeland Security
Last updated: April 8, 2026

Visible recipients

5

Mapped obligations

$569,592,053

Top PSC links

4

Top recipients

Visible recipients tied to Department of Homeland Security and NAICS 541211

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.

$405,067,195

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.

$11,180,324

Sehlke Consulting LLC

Vienna, VA

Sehlke Consulting LLC is a federal category business profile based in Vienna, VA. The current public data layer shows $42,603,555 in visible federal obligations across 79 awards or transactions. General Services Administration 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 R499.

$45,915,086

Aoc Solutions, INC

Fairfax, VA

Aoc Solutions, INC is a federal category business profile based in Fairfax, VA. The current public data layer shows $10,305,193 in visible federal obligations across 23 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 R710.

$473,458

Mantech Mgs, Inc.

Herndon, VA

Mantech Mgs, Inc. is a federal category business profile based in Herndon, VA. The current public data layer shows -$2,078,725 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 541219 (Other Accounting Services). The profile also shows meaningful product and service activity in PSC R408.

$106,955,990