Professional, Scientific, and Technical Services
7,086 active contract opportunities
7,086
Active Opportunities
6,296
Posted Last 7 Days
30 days
Avg Response Window
Top Industries
- Engineering Services1196
- Other Computer Related Services1131
- Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)810
- All Other Professional, Scientific, and Technical Services576
- Administrative Management and General Management Consulting Services423
Set-Aside Distribution
- 4652
- No Set Aside767
- Small Business566
- SDVOSB550
- Small Business Set Aside - Total240
Top Locations
- VA1123
- DC883
- CO633
- MD631
- CA382
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
PAE Maritime Professional Support Services
DEPT OF DEFENSE
CRANE, IN
NAICS 541330
Posted Sep 25, 2026
Due Oct 12, 2026
Atomically Precise Molecules (APM)
DEPT OF DEFENSE
ARLINGTON, VA
NAICS 541715
Posted Sep 25, 2026
Due Dec 18, 2026
Disruptioneering Program Announcement
DEPT OF DEFENSE
ARLINGTON, VA
NAICS 541715
Posted Sep 25, 2026
Due Oct 30, 2026
ARPA-H Emerging Health Innovators (EHI) Initiative
HEALTH AND HUMAN SERVICES, DEPARTMENT OF
Washington, DC
NAICS 541714
Posted Sep 25, 2026
Due Feb 10, 2027
No Set AsideB-MN-MORRIS WMD-ARCHEOLOGICAL SURVEY
INTERIOR, DEPARTMENT OF THE
Falls Church, VA
NAICS 541720
Posted Sep 25, 2026
Due Oct 7, 2026
Small Business Set Aside - TotalB-FY27 CRVFO NHPA SURVEY BLM-CO
INTERIOR, DEPARTMENT OF THE
BOISE, ID
NAICS 541720
Posted Sep 25, 2026
A-SBIR FY26 Phase I Broad Agency Announcement
ENVIRONMENTAL PROTECTION AGENCY
Cincinnati, OH
NAICS 541715
Posted Sep 25, 2026
Due Nov 9, 2026
Small Business Set Aside - TotalInspection and Maintenance of Portable Fire Extinguishers
DEPT OF DEFENSE
MEMPHIS, TN
NAICS 541990
Posted Sep 25, 2026
Small Business Set Aside - TotalARPA-H Comprehensive Organ System Modeling in Outer Space (COSMOS) Innovative Solutions Opening
HEALTH AND HUMAN SERVICES, DEPARTMENT OF
Washington, DC
NAICS 541714
Posted Sep 25, 2026
Due Oct 7, 2026
SOURCES SOUGHT Data at Rest (DaR) - 400 Obsolescence Resolution
DEPT OF DEFENSE
TINKER AFB, OK
NAICS 541330
Posted Sep 25, 2026
Due Oct 12, 2026
B-SERVICE - INVESTIGATING POTENTIAL PRESENCE OF POLYFLUOROALKYL SUBSTANCES(PFAS) AT FWS GREAT SWAMP NWR.
INTERIOR, DEPARTMENT OF THE
Falls Church, VA
NAICS 541620
Posted Sep 25, 2026
Z-CO-ARAPAHO NWR-Historic Resource Documentation and
INTERIOR, DEPARTMENT OF THE
Falls Church, VA
NAICS 541620
Posted Sep 25, 2026
JOINT ELECTRONIC DATA ACQUISITION INTERFACE (JEDAI)
DEPT OF DEFENSE
HILL AFB, UT
NAICS 541330
Posted Sep 25, 2026
B-NC-FWS ALLIGATOR RIV NWR-AERIAL SURVEYS for Red-cockaded Woodpecker
INTERIOR, DEPARTMENT OF THE
Falls Church, VA
NAICS 541370
Posted Sep 25, 2026
A-Recipient Epidemiology and Donor Evaluation Study
HEALTH AND HUMAN SERVICES, DEPARTMENT OF
BETHESDA, MD
NAICS 541715
Posted Sep 25, 2026
SBES Data Discovery and Interoperability Awards
COMMERCE, DEPARTMENT OF
SEATTLE, WA
NAICS 541720
Posted Sep 25, 2026
No Set AsideMC CBRN Request For Information
DEPT OF DEFENSE
WRIGHT PATTERSON AFB, OH
NAICS 541690
Posted Sep 25, 2026
Due Oct 9, 2026
Small Business Set Aside - TotalTravel Management Office (TMO) Travel Program (Defense Travel System (DTS) & Government Travel Charge Card (GTCC)) and Mail Management Center (MMC) Technical and Administrative Support Services.
DEPT OF DEFENSE
WASHINGTON NAVY YARD, DC
NAICS 541519
Posted Sep 25, 2026
Due Oct 13, 2026
Small Business Set Aside - TotalTSA ATSS RE-COMPETITION
HOMELAND SECURITY, DEPARTMENT OF
Springfield, VA
NAICS 541330
Posted Sep 25, 2026
Due Oct 7, 2026
No Set AsideEnterprise Service Management (ESM) Deployment and Professional Services
AMERICAN BATTLE MONUMENTS COMMISSION
ARLINGTON, VA
NAICS 541519
Posted Sep 25, 2026
No Set Aside
