NAICS 541990 · Professional, Scientific, and Technical Services

All Other Professional, Scientific, and Technical Services

39,918 contractors list NAICS 541990 (All Other Professional, Scientific, and Technical Services) in SAM.gov; 28,090 are small under its SBA size standard and 6,465 list it as their primary NAICS.

Learn more about NAICS size standards

Search with filters Small businesses only

Contractors (all registrations): 39,918
Small under 541990SBA size standard for this code: 28,090
Primary NAICSTheir main line of business: 6,465
Related industriesCodes these firms also list: 8

Work this industry

Live RFPs in this NAICS
Open SAM.gov solicitations coded 541990, matched to teaming partners.
Expiring awards
Incumbent contracts in 541990 heading to recompete in the next 18 months.
Small under 541990
Partners SAM.gov lists as small under this code: the size check a set-aside uses.

Size is NAICS-specific: a firm can be small under one code and other than small under another. Learn more about small business set-asides

Contractors listing NAICS 541990

Claimed profiles come first by membership level, then companies with 541990 as their primary NAICS, then federal obligations over the last 36 months. SPRS shows the highest blind bracket met, never the score. Learn more about blind SPRS brackets

Including excluded, expired and inactive SAM.gov registrations (flagged in the list). Excluded entities cannot receive federal awards or subcontracts. Hide them

Showing 1–20 of 39,918 contractors

SERCO INC
UEIDKJ1R5ABCN48CAGE022Q2
Location: HERNDON, VA
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $7.1B ($7,069,701,652)
NORTHROP GRUMMAN SYSTEMS CORPORATION
UEIFNBAMFZ3GD53CAGE9F909
Location: HUNTSVILLE, AL
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $3.3B ($3,280,436,022)
INSTITUTE FOR DEFENSE ANALYSES
UEIJM98J68UPRK1CAGE7A293
Location: ALEXANDRIA, VA
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $1.6B ($1,630,797,218)
NORTHROP GRUMMAN SYSTEMS CORPORATION
UEILEMLXG994AU3CAGE65409
Location: SAN DIEGO, CA
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $1.2B ($1,160,403,806)
STG INTERNATIONAL, INC.
UEID8MVW9XGUS26CAGE1GEJ7
Location: ARLINGTON, VA
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $1.1B ($1,057,607,329)
Abt Global LLC
UEIC9S1NLQ67626CAGE1C0U6
Location: Rockville, MD
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $973.7M ($973,696,725)
NORTHROP GRUMMAN SYSTEMS CORPORATION
DBA NORTHROP GRUMMAN SYSTEMS CORP
UEIEHBBTWLFSMW1CAGE0RBN7
Location: LINTHICUM HEIGHTS, MD
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $812.7M ($812,747,348)
PALLADIUM INTERNATIONAL LLC
UEIDFVMS8LMNX65CAGE42WP3
Location: WASHINGTON, DC
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM expiredObligated, 36 mo: $759.3M ($759,258,292)
AMENTUM TECHNOLOGY, INC.
UEIK3NWHLVFMKB5CAGE096A3
Location: TAMPA, FL
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $621.8M ($621,794,741)
SOS INTERNATIONAL LLC
UEIL3VCKMD7J585CAGE6QG06
Location: RESTON, VASocio-economic status (SAM.gov): SB
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $617.1M ($617,097,425)
SAFEGUARD SERVICES LLC
UEIH4NNJLWMC4E4CAGE4TJT0
Location: CAMP HILL, PA
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $530M ($529,973,491)
NORTHROP GRUMMAN SYSTEMS CORPORATION
UEIEH8UKZ6TML75CAGE8Y233
Location: COLORADO SPRINGS, CO
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $274.6M ($274,621,897)
REDHORSE CORPORATION
DBA REDHORSE TECHNICAL SERVICES, INC.
UEIJM1RHRXMLKG8CAGE4WS86
Location: ARLINGTON, VA
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM expiringObligated, 36 mo: $209.4M ($209,383,261)
FEDERAL MIRACLE TECH LLC
UEIDUL2V2JKMKD3CAGE88PU3
Location: GREENBELT, MDSocio-economic status (SAM.gov): SBWOSBEDWOSB
Primary NAICSSmall under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $193.2M ($193,240,221)
GOLDBELT FRONTIER, LLC
DBA GOLDBELT FRONTIER LLC
UEIGCJNYKYE93F6CAGE7D3B6
Location: ALEXANDRIA, VASocio-economic status (SAM.gov): SBANC
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $186.1M ($186,128,870)
T47 INTERNATIONAL, INC.
DBA T47 INTERNATIONAL INC
UEIJXGZBLGBA996CAGE6YXV2
Location: BOWIE, MDSocio-economic status (SAM.gov): SBWOSBVOSB
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $175.6M ($175,603,171)
THREAT TEC, LLC
UEICXKLGRZ7MME6CAGE6SM72
Location: HAMPTON, VASocio-economic status (SAM.gov): SBVOSB
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $160.8M ($160,826,510)
WINROCK INTERNATIONAL INSTITUTE FOR AGRICULTURAL DEVELOPMENT
UEIKZ2UGRDKFNJ6CAGE3K3G8
Location: LITTLE ROCK, ARSocio-economic status (SAM.gov): SB
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $155.7M ($155,651,178)
NATIONAL TECHNOLOGIES ASSOCIATES, INC.
UEIK63KMZD596X8CAGE8V131
Location: CALIFORNIA, MD
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $151.4M ($151,404,958)
KLD ASSOCIATES INC
UEICP62CFELM3C3CAGE2H015
Location: PORT JEFFERSON STATION, NY
Primary NAICSNot listed as small under 541990
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $146.5M ($146,531,628)

Contractors listing NAICS 541990, page 1 of 1996
Company	This code	Compliance	SAM.gov	Obligated, 36 mo
SERCO INC UEIDKJ1R5ABCN48CAGE022Q2 Location: HERNDON, VA	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$7.1B ($7,069,701,652)
NORTHROP GRUMMAN SYSTEMS CORPORATION UEIFNBAMFZ3GD53CAGE9F909 Location: HUNTSVILLE, AL	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$3.3B ($3,280,436,022)
INSTITUTE FOR DEFENSE ANALYSES UEIJM98J68UPRK1CAGE7A293 Location: ALEXANDRIA, VA	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$1.6B ($1,630,797,218)
NORTHROP GRUMMAN SYSTEMS CORPORATION UEILEMLXG994AU3CAGE65409 Location: SAN DIEGO, CA	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$1.2B ($1,160,403,806)
STG INTERNATIONAL, INC. UEID8MVW9XGUS26CAGE1GEJ7 Location: ARLINGTON, VA	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$1.1B ($1,057,607,329)
Abt Global LLC UEIC9S1NLQ67626CAGE1C0U6 Location: Rockville, MD	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$973.7M ($973,696,725)
NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP UEIEHBBTWLFSMW1CAGE0RBN7 Location: LINTHICUM HEIGHTS, MD	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$812.7M ($812,747,348)
PALLADIUM INTERNATIONAL LLC UEIDFVMS8LMNX65CAGE42WP3 Location: WASHINGTON, DC	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM expired	$759.3M ($759,258,292)
AMENTUM TECHNOLOGY, INC. UEIK3NWHLVFMKB5CAGE096A3 Location: TAMPA, FL	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$621.8M ($621,794,741)
SOS INTERNATIONAL LLC UEIL3VCKMD7J585CAGE6QG06 Location: RESTON, VASocio-economic status (SAM.gov): SB	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$617.1M ($617,097,425)
SAFEGUARD SERVICES LLC UEIH4NNJLWMC4E4CAGE4TJT0 Location: CAMP HILL, PA	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$530M ($529,973,491)
NORTHROP GRUMMAN SYSTEMS CORPORATION UEIEH8UKZ6TML75CAGE8Y233 Location: COLORADO SPRINGS, CO	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$274.6M ($274,621,897)
REDHORSE CORPORATION DBA REDHORSE TECHNICAL SERVICES, INC. UEIJM1RHRXMLKG8CAGE4WS86 Location: ARLINGTON, VA	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM expiring	$209.4M ($209,383,261)
FEDERAL MIRACLE TECH LLC UEIDUL2V2JKMKD3CAGE88PU3 Location: GREENBELT, MDSocio-economic status (SAM.gov): SBWOSBEDWOSB	Primary NAICSSmall under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$193.2M ($193,240,221)
GOLDBELT FRONTIER, LLC DBA GOLDBELT FRONTIER LLC UEIGCJNYKYE93F6CAGE7D3B6 Location: ALEXANDRIA, VASocio-economic status (SAM.gov): SBANC	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$186.1M ($186,128,870)
T47 INTERNATIONAL, INC. DBA T47 INTERNATIONAL INC UEIJXGZBLGBA996CAGE6YXV2 Location: BOWIE, MDSocio-economic status (SAM.gov): SBWOSBVOSB	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$175.6M ($175,603,171)
THREAT TEC, LLC UEICXKLGRZ7MME6CAGE6SM72 Location: HAMPTON, VASocio-economic status (SAM.gov): SBVOSB	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$160.8M ($160,826,510)
WINROCK INTERNATIONAL INSTITUTE FOR AGRICULTURAL DEVELOPMENT UEIKZ2UGRDKFNJ6CAGE3K3G8 Location: LITTLE ROCK, ARSocio-economic status (SAM.gov): SB	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$155.7M ($155,651,178)
NATIONAL TECHNOLOGIES ASSOCIATES, INC. UEIK63KMZD596X8CAGE8V131 Location: CALIFORNIA, MD	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$151.4M ($151,404,958)
KLD ASSOCIATES INC UEICP62CFELM3C3CAGE2H015 Location: PORT JEFFERSON STATION, NY	Primary NAICSNot listed as small under 541990	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$146.5M ($146,531,628)

Codes these contractors list most often alongside 541990: natural teaming adjacencies.

All Other Professional, Scientific, and Technical Services

Work this industry

Contractors listing NAICS 541990

Related industries