Agency + NAICS page

Department of Defense NAICS 541990 contractors

All Other Professional, Scientific, and Technical Services. Use this buyer-scoped industry page to see which visible contractors sit closest to this NAICS lane under Department of Defense.

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

Visible recipients

137

Mapped obligations

$21,703,327,609

Top PSC links

4

Top recipients

Visible recipients tied to Department of Defense and NAICS 541990

Tatitlek Support Services INC

Anchorage, AK

Tatitlek Support Services INC is a federal 8a program participant profile based in Anchorage, AK. The current public data layer shows $278,606,685 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 561210 (Facilities Support Services). The profile also shows meaningful product and service activity in PSC U099.

-$1,593,680

Cognosante Mvh LLC

Arlington, VA

Cognosante Mvh LLC is a federal category business profile based in Arlington, VA. The current public data layer shows $271,236,755 in visible federal obligations across 60 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 R499.

$36,459,384

Noblis, Inc.

Reston, VA

Noblis, Inc. is a federal category business profile based in Reston, VA. The current public data layer shows $263,857,681 in visible federal obligations across 372 awards or transactions. Department of Transportation 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.

$237,683,736

Aar Government Services, Inc.

Wood Dale, IL

Aar Government Services, Inc. is a federal category business profile based in Wood Dale, IL. The current public data layer shows $254,953,145 in visible federal obligations across 429 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 488190 (Other Support Activities for Air Transportation). The profile also shows meaningful product and service activity in PSC J015.

$28,645,341

Aecom Energy & Construction, Inc.

Greenwood Village, CO

Aecom Energy & Construction, Inc. is a federal category business profile based in Greenwood Village, CO. The current public data layer shows $254,563,037 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 237990 (Other Heavy and Civil Engineering Construction). The profile also shows meaningful product and service activity in PSC Z2KA.

$7,661,197

Chenega Government Consulting, LLC

Chesapeake, VA

Chenega Government Consulting, LLC is a federal 8a program participant profile based in Chesapeake, VA. The current public data layer shows $250,368,522 in visible federal obligations across 5 awards or transactions. Department of Energy 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.

$49,395,109

Credence Management Solutions Limited Liability Company

Mclean, VA

Credence Management Solutions Limited Liability Company is a federal category business profile based in Mclean, VA. The current public data layer shows $240,056,157 in visible federal obligations across 222 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.

$84,831,176

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.

$79,266

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.

$13,322,159

Serco Management Services, Inc.

Reston, VA

Serco Management Services, Inc. is a federal category business profile based in Reston, VA. The current public data layer shows $198,766,291 in visible federal obligations across 5 awards or transactions. Department of Transportation appears as the strongest visible awarding agency. Top industry concentration is in NAICS 488111 (Air Traffic Control). The profile also shows meaningful product and service activity in PSC M1BA.

$668,528
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