NAICS 541in54:Professional, Scientific, and Technical Services

Professional, Scientific, and Technical Services

4,128 active contract opportunities

4,128

Active Opportunities

206

Posted Last 7 Days

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Top Industries

  • Engineering Services704
  • Other Computer Related Services621
  • Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)562
  • All Other Professional, Scientific, and Technical Services309
  • Administrative Management and General Management Consulting Services216

Set-Aside Distribution

  • 2704
  • Small Business469
  • No Set Aside443
  • SDVOSB320
  • 8(a) Sole Source57

Top Locations

  • VA641
  • DC518
  • MD371
  • CA231
  • CO219

About NAICS541

The North American Industry Classification System (NAICS) code 541 covers professional, scientific, and technical services. Federal agencies use NAICS codes to classify contracts by industry. Businesses should register their applicable NAICS codes in SAM.gov.

SAM.gov Registration →|Set-Aside Programs →

Related Industries

C1AZ-AE Expand Chiller Plant Cx 583-25-101

VETERANS AFFAIRS, DEPARTMENT OF
DAYTON, OH
NAICS 541330
Posted Jan 23, 2026
Due Feb 10, 2026
SDVOSB
15 days left

R-Power Marketing Support Services, Western Area Pow

ENERGY, DEPARTMENT OF
PHOENIX, AZ
NAICS 541330
Posted Jan 23, 2026

Request for Information: Information Assurance Compliance Support Services

HOMELAND SECURITY, DEPARTMENT OF
NAICS 541512
Posted Jan 23, 2026
Due Feb 17, 2026
No Set Aside
22 days left

Intent to Sole Source for Sentinel 2.0 Bridge Contract to Harvard Pilgrim Health Care Inc.

HEALTH AND HUMAN SERVICES, DEPARTMENT OF
Silver Spring, MD
NAICS 541
Posted Jan 23, 2026
Due Feb 6, 2026
No Set Aside
12 days left

Indefinite Delivery Contract (IDC) Multiple Award Task Order Contract (MATOC) for Real Estate Title Services

DEPT OF DEFENSE
TULSA, OK
NAICS 541191
Posted Jan 23, 2026
Due Feb 24, 2026
Small Business
29 days left

RFI: IT Systems Engineering/Operations & Maintenance Support

HOMELAND SECURITY, DEPARTMENT OF
WASHINGTON, DC
NAICS 541511
Posted Jan 23, 2026
Due Feb 17, 2026
22 days left

Hazardous Waste and Water Testing and Analysis

DEPT OF DEFENSE
VIENNA, OH
NAICS 541380
Posted Jan 23, 2026
Due Feb 23, 2026
Small Business
28 days left

Commercial Satellite Capabilities for Nighttime, Electro-Optical Earth Observation

DEPT OF DEFENSE
WASHINGTON, DC
NAICS 541715
Posted Jan 23, 2026
Due Feb 22, 2026
No Set Aside
28 days left

Ideal Aerosmith Rate Table Calibration

DEPT OF DEFENSE
ROBINS AFB, GA
NAICS 541380
Posted Jan 23, 2026
No Set Aside

Low Background Infrared (LBIR) facility

DEPT OF DEFENSE
HEATH, OH
NAICS 541380
Posted Jan 23, 2026

DENALI COMMISSION: STRATEGIC PLANNING REPORT

INTERIOR, DEPARTMENT OF THE
HERNDON, VA
NAICS 541690
Posted Jan 23, 2026
Due Feb 6, 2026
Small Business
12 days left

HUNGARIAN/ENGLISH TRANSLATION AND ADMINISTRATIVE SUPPORT SERVICES AT PAPA AIR BASE, HUNGARY

DEPT OF DEFENSE
APO, AE
NAICS 541930
Posted Jan 23, 2026
Due Feb 23, 2026
No Set Aside
28 days left

2026 FIRE PREVENTION CAMPAIGN

INTERIOR, DEPARTMENT OF THE
RENO, NV
NAICS 541810
Posted Jan 23, 2026
Due Feb 7, 2026
Small Business
12 days left

Request for Information: Voluntary Observing Ship (VOS) Program

COMMERCE, DEPARTMENT OF
NORFOLK, VA
NAICS 541990
Posted Jan 23, 2026
Due Feb 20, 2026
26 days left

Water treatment of HVAC water systems services

STATE, DEPARTMENT OF
WASHINGTON, DC
NAICS 541620
Posted Jan 23, 2026
Due Feb 24, 2026
No Set Aside
29 days left

C-Architect-Engineering firms for surveying project.

INTERIOR, DEPARTMENT OF THE
Falls Church, VA
NAICS 541370
Posted Jan 23, 2026
Due Mar 1, 2027
Small Business
399 days left

Guam Army National Guard 94th CST Guam All Hazards Exercise

DEPT OF DEFENSE
BARRIGADA, GU
NAICS 541990
Posted Jan 23, 2026
Due Jan 30, 2026
Small Business
4 days left

Fielded Training Systems Support VI MAC- Sources Sought

DEPT OF DEFENSE
ORLANDO, FL
NAICS 541330
Posted Jan 23, 2026
Due Feb 11, 2026
No Set Aside
17 days left

FY'26 Licenses to Operate NUCARS Software

TRANSPORTATION, DEPARTMENT OF
CAMBRIDGE, MA
NAICS 541519
Posted Jan 22, 2026
Due Jan 28, 2026
3 days left

Water Wells Inspection and Testing

DEPT OF DEFENSE
BEALE AFB, CA
NAICS 541620
Posted Jan 22, 2026
Due Feb 18, 2026
Small Business
23 days left
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