Professional, Scientific, and Technical Services

5,671 active contract opportunities

5,671

Active Opportunities

5,206

Posted Last 7 Days

30 days

Avg Response Window

Top Industries

  • Engineering Services969
  • Other Computer Related Services844
  • Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)705
  • All Other Professional, Scientific, and Technical Services467
  • Administrative Management and General Management Consulting Services316

Set-Aside Distribution

  • 3669
  • Small Business650
  • No Set Aside642
  • SDVOSB449
  • 8(a) Sole Source64

Top Locations

  • VA846
  • DC720
  • MD494
  • CO438
  • CA317

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.

Related Industries

Legionella Testing, Boise VAMC (Bridge Contract)

VETERANS AFFAIRS, DEPARTMENT OF
VANCOUVER, WA
NAICS 541380
Posted Jul 21, 2026

Notice of Intent to Award a WOSB Sole Source - Underrepresented NAICS

COURT SERVICES AND OFFENDER SUPERVISION AGENCY
WASHINGTON, DC
NAICS 541519
Posted Jul 21, 2026
Due Aug 15, 2026
WOSB Sole Source

Natural Resource Technical Services Throughout the Naval Facilities Engineering Systems Command (NAVFAC) Pacific Area of Responsibility

DEPT OF DEFENSE
JBPHH, HI
NAICS 541620
Posted Jul 21, 2026
Due Aug 25, 2026
Partial Small Business

Marketing and Advertising Services

DEPT OF DEFENSE
AURORA, CO
NAICS 541810
Posted Jul 21, 2026
Due Aug 20, 2026
WOSB

B-SCRATCHGRAVEL HILLS CRI

INTERIOR, DEPARTMENT OF THE
BILLINGS, MT
NAICS 541720
Posted Jul 21, 2026

Instructional Systems Design & Development Services

STATE, DEPARTMENT OF
WASHINGTON, DC
NAICS 541512
Posted Jul 21, 2026
Due Aug 5, 2026
No Set Aside

PD-42-0035; Propulsor Product Improvement Program

DEPT OF DEFENSE
PHILADELPHIA, PA
NAICS 541330
Posted Jul 21, 2026
Due Aug 5, 2026
No Set Aside

NAVFAC WASHINGTON FY26 AE IDIQ INDUSTRIAL

DEPT OF DEFENSE
WASHINGTON NAVY YARD, DC
NAICS 541330
Posted Jul 21, 2026
Due Aug 24, 2026
No Set Aside

Chain Reaction Innovations - Energy Technology Innovation

ENERGY, DEPARTMENT OF
Lemont, IL
NAICS 54171
Posted Jul 21, 2026
Due Oct 30, 2026
No Set Aside

NEZ PERCE-CLEARWATER DRINKING WATER TESTING

AGRICULTURE, DEPARTMENT OF
GRANGEVILLE, ID
NAICS 541380
Posted Jul 21, 2026
Due Aug 5, 2026
Small Business

Chemical, Biological, Radiological, and Nuclear (CBRN) Medical Countermeasure (MCM) Participant Basic Agreement (PBA)

DEPT OF DEFENSE
ABERDEEN PROVING GROU, MD
NAICS 541714
Posted Jul 21, 2026

Notice of Intent to Award a BPA Call Order against The Land Management Integrated Resources BPA (LMIR) for Fungi Surveys in the Umpqua National Forest

AGRICULTURE, DEPARTMENT OF
ROSEBURG, OR
NAICS 541620
Posted Jul 21, 2026
Due Aug 12, 2026
Small Business

LAND MANAGEMENT INTEGRATED RESOURCES (LMIR) NATIONAL BPA - Heritage on the Klamath NF

AGRICULTURE, DEPARTMENT OF
Washington, DC
NAICS 541620
Posted Jul 21, 2026
Due Aug 9, 2026
Small Business

Environmental Analytical and Regulatory Compliance Services

DEPT OF DEFENSE
HOMESTEAD AFB, FL
NAICS 541380
Posted Jul 21, 2026
Due Aug 7, 2026
Small Business

Immune Mechanisms of Protection Against Mycobacterium tuberculosis Center (IMPAc-TB)

HEALTH AND HUMAN SERVICES, DEPARTMENT OF
BETHESDA, MD
NAICS 541715
Posted Jul 21, 2026
Due Sep 1, 2026

Q301-Legionella Testing

VETERANS AFFAIRS, DEPARTMENT OF
HAMPTON, VA
NAICS 541380
Posted Jul 21, 2026
Due Aug 7, 2026
SDVOSB

Standard Recovery - India (Follow-on)

EXPORT-IMPORT BANK OF THE US
WASHINGTON, DC
NAICS 541110
Posted Jul 21, 2026
Due Aug 4, 2026

Z-SAP - Annual Mandatory Compliance Testing of UST

ENVIRONMENTAL PROTECTION AGENCY
ANN ARBOR, MI
NAICS 541380
Posted Jul 21, 2026

Notice of Intent to Sole Source: Standalone Bridge Contract for AFLCMC/EZ Cybersecurity and Systems Engineering Support

DEPT OF DEFENSE
WRIGHT PATTERSON AFB, OH
NAICS 541330
Posted Jul 21, 2026
Due Aug 5, 2026
No Set Aside

American Sign Language Interpreting Services ; NH Beaufort

DEPT OF DEFENSE
FREDERICK, MD
NAICS 541930
Posted Jul 21, 2026
Due Aug 4, 2026
No Set Aside