Agency + PSC page

Department of Defense PSC R499 contractors

SUPPORT- PROFESSIONAL: OTHER. Use this buyer-scoped PSC page to see which visible contractors sit closest to this product or service lane under Department of Defense.

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

Visible recipients

300

Mapped obligations

$121,584,936,537

Top NAICS links

4

Top recipients

Visible recipients tied to Department of Defense and PSC R499

Halvik, LLC

Vienna, VA

Halvik, LLC is a federal 8a program participant profile based in Vienna, VA. The current public data layer shows $157,469,966 in visible federal obligations across 202 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 R499.

$246,009,546

American Systems Corporation

Mclean, VA

American Systems Corporation is a federal category business profile based in Mclean, VA. The current public data layer shows $147,161,687 in visible federal obligations across 295 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.

$273,552,741

Veterans Ez Info Inc.

San Diego, CA

Veterans Ez Info Inc. is a federal category business profile based in San Diego, CA. The current public data layer shows $143,620,748 in visible federal obligations across 38 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 DA01.

$20,311,565

Tista Science And Technology Corporation

Rockville, MD

Tista Science And Technology Corporation is a federal 8a program participant profile based in Rockville, MD. The current public data layer shows $140,919,093 in visible federal obligations across 37 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.

$152,703,476

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.

$993,223,255

Chickasaw Advisory Services, LLC

Norman, OK

Chickasaw Advisory Services, LLC is a federal 8a program participant profile based in Norman, OK. The current public data layer shows $139,481,123 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 541519 (Other Computer Related Services). The profile also shows meaningful product and service activity in PSC D399.

$40,980,271

Visionary Integration Professionals LLC

Folsom, CA

Visionary Integration Professionals LLC is a federal category business profile based in Folsom, CA. The current public data layer shows $138,470,551 in visible federal obligations across 15 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 R499.

$62,582,904

Securigence LLC

Leesburg, VA

Securigence LLC is a federal alaskan native corporation owned firm profile based in Leesburg, VA. The current public data layer shows $134,804,914 in visible federal obligations across 71 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 D301.

$2,500

Sev1tech, LLC

Woodbridge, VA

Sev1tech, LLC is a federal category business profile based in Woodbridge, VA. The current public data layer shows $133,265,250 in visible federal obligations across 225 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 R425.

$77,823,897

Tetra Tech, Inc.

Pasadena, CA

Tetra Tech, Inc. is a federal category business profile based in Pasadena, CA. The current public data layer shows $130,835,501 in visible federal obligations across 260 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 C219.

$373,572,423
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