NAICS 541990 · Professional, Scientific, and Technical Services

All Other Professional, Scientific, and Technical Services

39,391 active contractors list NAICS 541990 (All Other Professional, Scientific, and Technical Services) in SAM.gov; 28,009 are small under its SBA size standard and 6,366 list it as their primary NAICS.

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Active contractors: 39,391
Small under 541990SBA size standard for this code: 28,009
Primary NAICSTheir main line of business: 6,366
Hidden registrationsExcluded, expired or inactive: 528

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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

528 registrations hidden because they are excluded, expired or inactive in SAM.gov. Include them

Showing 34,001–34,020 of 39,391 contractors

SIGMARIVER INC.
UEIW97RN93DQC77CAGE74HM8
Location: FRONT ROYAL, VASocio-economic status (SAM.gov): SBVOSBSDVOSB
Secondary 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: None on file
SIGMA STRATEGIC VENTURES LLC
UEIHPV3APK5C8M9CAGE1AQK6
Location: UNIONTOWN, OH
Secondary 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: None on file
SIGNAL CROWE SOLUTIONS LLC
UEIN1S5CZEWFBW1CAGE210D3
Location: SCAPPOOSE, ORSocio-economic status (SAM.gov): SBWOSB
Secondary 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: None on file
SIGNAL HILL TECHNOLOGIES, LLC
UEID5E3FBQVNCT9CAGE7ZKF6
Location: MANASSAS, VASocio-economic status (SAM.gov): SB
Secondary 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: None on file
SIGNAL MOUNTAIN NETWORKS, LLC
UEIQHSXFAD12MB3CAGE33PB8
Location: ATLANTA, GASocio-economic status (SAM.gov): SBSDB
Secondary 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: None on file
SIGNAL USA LLC
UEIDXSKLY7HF7H4CAGE74RM3
Location: TROY, MI
Secondary 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: None on file
SIGN AND DELIVER INTERPRETING LLC
UEIYQKZL1PTSLB3CAGE1Z3B2
Location: SPRING VALLEY, CASocio-economic status (SAM.gov): SBSDBVOSBSDVOSB
Secondary 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: None on file
SIGNATURE NOTARY 26 LLC
DBA SIGNATURE NOTARY 26
UEIKW4VN6Z2MZ87CAGE9MS03
Location: CEDAR RAPIDS, IASocio-economic status (SAM.gov): SBSDBWOSB
Secondary 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: None on file
SIGNATURE PERFORMANCE, INC.
UEIWKUNWXBN45R1CAGE3P2U7
Location: OMAHA, NE
Secondary 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: None on file
SIGNATURE PRACTICE SERVICES, LLC
UEIQNATX5KCVWS5CAGE13YH7
Location: KATY, TXSocio-economic status (SAM.gov): SBWOSBVOSBSDVOSB
Secondary 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: None on file
SIGNED & SEALED LEGALS LLC
UEIZ4BLBAFRKNR1CAGE93UL1
Location: NEWARK, NJSocio-economic status (SAM.gov): SBWOSB
Secondary 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: None on file
SIGNET ELECTRONIC SYSTEMS, LLC
DBA SIGNET ELECTRONIC SYSTEMS INC
UEIZCSJBJE9G488CAGE1XRS7
Location: NORWELL, MA
Secondary 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: None on file
SIGNIFICANCE TAMAYO ALLIANCE LLC
DBA SITA ALLIANCE
UEICT1BHAFY6JC6CAGE17KN7
Location: VIRGINIA BEACH, VASocio-economic status (SAM.gov): SBSDBWOSBEDWOSB
Secondary 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: None on file
SIGNOTARY PROOF LLC
UEIQHHEYEFEKED6CAGE24NK6
Location: FORT LAUDERDALE, FLSocio-economic status (SAM.gov): SBSDB
Secondary 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: None on file
SIGNUM TECHNOLOGIES INC
UEIFT3BP3AWEK43CAGE9HCB7
Location: WAYNE, PASocio-economic status (SAM.gov): SBSDB
Secondary 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: None on file
SIGWIN LLC
UEIE8BKCBAUCX33CAGE9NJS1
Location: BAYAMON, PRSocio-economic status (SAM.gov): SBSDBWOSB
Secondary 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: None on file
SIKDER SOLUTIONS LLC
UEIW6JPVLRDJTM5CAGE9SP73
Location: RESTON, VASocio-economic status (SAM.gov): SB
Secondary 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: None on file
SIKICH CPA LLC
UEIQKVWLDNE82D4CAGE0HZX2
Location: ALEXANDRIA, VA
Secondary 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: None on file
SILC TECHNOLOGIES, INC
UEIEJRNQ9N92MK5CAGE89ZK4
Location: MONROVIA, CA
Secondary 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: None on file
SILENT CROWN LLC
UEIGBV5MYE2WQF8CAGE9KNR0
Location: DURHAM, NC
Secondary 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: None on file

Contractors listing NAICS 541990, page 1701 of 1970
Company	This code	Compliance	SAM.gov	Obligated, 36 mo
SIGMARIVER INC. UEIW97RN93DQC77CAGE74HM8 Location: FRONT ROYAL, VASocio-economic status (SAM.gov): SBVOSBSDVOSB	Secondary 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	None on file
SIGMA STRATEGIC VENTURES LLC UEIHPV3APK5C8M9CAGE1AQK6 Location: UNIONTOWN, OH	Secondary 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	None on file
SIGNAL CROWE SOLUTIONS LLC UEIN1S5CZEWFBW1CAGE210D3 Location: SCAPPOOSE, ORSocio-economic status (SAM.gov): SBWOSB	Secondary 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	None on file
SIGNAL HILL TECHNOLOGIES, LLC UEID5E3FBQVNCT9CAGE7ZKF6 Location: MANASSAS, VASocio-economic status (SAM.gov): SB	Secondary 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	None on file
SIGNAL MOUNTAIN NETWORKS, LLC UEIQHSXFAD12MB3CAGE33PB8 Location: ATLANTA, GASocio-economic status (SAM.gov): SBSDB	Secondary 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	None on file
SIGNAL USA LLC UEIDXSKLY7HF7H4CAGE74RM3 Location: TROY, MI	Secondary 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	None on file
SIGN AND DELIVER INTERPRETING LLC UEIYQKZL1PTSLB3CAGE1Z3B2 Location: SPRING VALLEY, CASocio-economic status (SAM.gov): SBSDBVOSBSDVOSB	Secondary 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	None on file
SIGNATURE NOTARY 26 LLC DBA SIGNATURE NOTARY 26 UEIKW4VN6Z2MZ87CAGE9MS03 Location: CEDAR RAPIDS, IASocio-economic status (SAM.gov): SBSDBWOSB	Secondary 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	None on file
SIGNATURE PERFORMANCE, INC. UEIWKUNWXBN45R1CAGE3P2U7 Location: OMAHA, NE	Secondary 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	None on file
SIGNATURE PRACTICE SERVICES, LLC UEIQNATX5KCVWS5CAGE13YH7 Location: KATY, TXSocio-economic status (SAM.gov): SBWOSBVOSBSDVOSB	Secondary 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	None on file
SIGNED & SEALED LEGALS LLC UEIZ4BLBAFRKNR1CAGE93UL1 Location: NEWARK, NJSocio-economic status (SAM.gov): SBWOSB	Secondary 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	None on file
SIGNET ELECTRONIC SYSTEMS, LLC DBA SIGNET ELECTRONIC SYSTEMS INC UEIZCSJBJE9G488CAGE1XRS7 Location: NORWELL, MA	Secondary 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	None on file
SIGNIFICANCE TAMAYO ALLIANCE LLC DBA SITA ALLIANCE UEICT1BHAFY6JC6CAGE17KN7 Location: VIRGINIA BEACH, VASocio-economic status (SAM.gov): SBSDBWOSBEDWOSB	Secondary 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	None on file
SIGNOTARY PROOF LLC UEIQHHEYEFEKED6CAGE24NK6 Location: FORT LAUDERDALE, FLSocio-economic status (SAM.gov): SBSDB	Secondary 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	None on file
SIGNUM TECHNOLOGIES INC UEIFT3BP3AWEK43CAGE9HCB7 Location: WAYNE, PASocio-economic status (SAM.gov): SBSDB	Secondary 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	None on file
SIGWIN LLC UEIE8BKCBAUCX33CAGE9NJS1 Location: BAYAMON, PRSocio-economic status (SAM.gov): SBSDBWOSB	Secondary 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	None on file
SIKDER SOLUTIONS LLC UEIW6JPVLRDJTM5CAGE9SP73 Location: RESTON, VASocio-economic status (SAM.gov): SB	Secondary 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	None on file
SIKICH CPA LLC UEIQKVWLDNE82D4CAGE0HZX2 Location: ALEXANDRIA, VA	Secondary 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	None on file
SILC TECHNOLOGIES, INC UEIEJRNQ9N92MK5CAGE89ZK4 Location: MONROVIA, CA	Secondary 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	None on file
SILENT CROWN LLC UEIGBV5MYE2WQF8CAGE9KNR0 Location: DURHAM, NC	Secondary 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	None on file

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

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