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Department of the Interior NAICS 541330 and PSC R499 contractors

Engineering 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 the Interior.

Department of the Interior · NAICS 541330 · PSC R499
Last updated: April 5, 2026

Visible recipients

20

Mapped obligations

$29,473,004,231

State overlap

4

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 541330 and PSC R499

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 78 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.

$609,025,000

Smartronix, LLC

Hollywood, MD

Smartronix, LLC is a federal category business profile based in Hollywood, MD. The current public data layer shows $74,698,637 in visible federal obligations across 183 awards or transactions. General Services Administration 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.

$2,505,129,594

Wsp USA Solutions INC

Arlington, VA

Wsp USA Solutions INC is a federal category business profile based in Arlington, VA. The current public data layer shows $37,946,568 in visible federal obligations across 227 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.

$155,040,496

Black & Veatch Corporation

Alpharetta, GA

Black & Veatch Corporation is a federal category business profile based in Alpharetta, GA. The current public data layer shows $32,301,941 in visible federal obligations across 5 awards or transactions. Environmental Protection Agency 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 F108.

$143,247

Michael Baker International, Inc.

Moon Township, PA

Michael Baker International, Inc. is a federal category business profile based in Moon Township, PA. The current public data layer shows $24,496,294 in visible federal obligations across 59 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 C211.

$629,366,529

Honeywell Building Solutions Ses CORP

Minneapolis, MN

Honeywell Building Solutions Ses CORP is a federal category business profile based in Minneapolis, MN. The current public data layer shows $20,914,238 in visible federal obligations across 6 awards or transactions. General Services Administration 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 Z2AA.

$242,870,037

Icf Incorporated

Fairfax, VA

Icf Incorporated is a federal government profile based in Fairfax, VA. The current public data layer shows $5,505,384 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 541611 (Administrative Management and General Management Consulting Services). The profile also shows meaningful product and service activity in PSC R499.

$2,112,843,587

Southland Industries

Sterling, VA

Southland Industries is a federal category business profile based in Sterling, VA. The current public data layer shows $4,836,806 in visible federal obligations across 15 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.

$48,953,739

Bering Straits Aerospace Services, LLC

Anchorage, AK

Bering Straits Aerospace Services, LLC is a federal alaskan native corporation owned firm profile based in Anchorage, AK. The current public data layer shows $2,734,065 in visible federal obligations across 7 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 J016.

$26,660,305

Booz Allen Hamilton Engineering Services, LLC

Annapolis Junction, MD

Booz Allen Hamilton Engineering Services, LLC is a federal category business profile based in Annapolis Junction, MD. The current public data layer shows -$410,371 in visible federal obligations across 11 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 R414.

$2,377,902,739
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