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The Professional, Scientific, and Technical Services sector comprises establishments that specialize in performing professional, scientific, and technical activities for others. These activities require a high degree of expertise and training. The establishments in this sector specialize according to expertise and provide these services to clients in a variety of industries and, in some cases, to households. Activities performed include: legal advice and representation; accounting, bookkeeping, and payroll services; architectural, engineering, and specialized design services; computer services; consulting services; research services; advertising services; photographic services; translation and interpretation services; veterinary services; and other professional, scientific, and technical services. This sector excludes establishments primarily engaged in providing a range of day-to-day office administrative services, such as financial planning, billing and recordkeeping, personnel, and physical distribution and logistics. These establishments are classified in Sector 56, Administrative and Support and Waste Management and Remediation Services.

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Showing 4801–4850 of 5341 bids that are currently: Active.

Denotes bidding opportunities that have been amended

Washington D.C. - US Due Date
Tradewinds Solutions Marketplace
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 31, 2026
Market Research for Long Range Fires Capabilities
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 29, 2026
Communications Events and Programs
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 20, 2026
Aeronautical Support Facilities Development & Management
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jul. 13, 2026
Asset Forfeiture Administrative Support Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 08, 2026
Experimental and Mathematical Biomechanics Injury Research IDIQ
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 23, 2026
Updated Master Invitation for Bids for International Commodity Procurements (MIFB-I)
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Oct. 23, 2026
Updated Master Invitation for Bids - Domestic Commodity Procurement (MIFB-D)
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Oct. 23, 2026
USDA-RD Finance Office Support
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 25, 2026
USAC RFP: Enterprise Cybersecurity and Monitoring Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 10, 2026
Letterkenny Army Depot Organic Industrial Base (OIB) Event
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 20, 2026
Asset Forfeiture Administrative Support Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 08, 2026
Audiovisual and Acoustical Technical Assessment Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 29, 2026
Crash Investigation Sampling System (CISS) \u2013 Primary Sampling Units (PSU) Operations Center
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 30, 2026
Crash Investigation Sampling System (CISS) \u2013 Quality Control Center (QCC)
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 30, 2026
Experimental and Mathematical Biomechanics Injury Research IDIQ
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 23, 2026
Air Force Research Laboratory (AFRL) Enterprise Commercial Solutions Opening (CSO)
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 30, 2030
Technology Insertion for Acoustic Rapid Action Commercial Off-the Shelf (COTS) Insertion (A-RCI) IDIQ-MAC
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 17, 2026
2026 NAVAIR\/NAWCAD Lakehurst Industry Day
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 09, 2026
UPDATE TO THE NATIONAL CAPITAL REGION FREIGHT PLAN
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 04, 2026
House of Representatives Ad-Hoc Staffing Support
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 26, 2026
Naval Litigation Office - Services in support of the defense of Iranian FMS claims against the United States Government at the Iran - U.S. Claims Tribunal, The Hague, Netherlands
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 22, 2026
USDA-RD Finance Office Support
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 25, 2026
Hearing Enhancement through ARtificially Intelligent NeurotechnoloGy (HEARING)
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Aug. 14, 2026
Technical Advisory Support Services: Transition of Food for Peace to USDA
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 27, 2026
Technology Transfer Program
54 - Professional, Scientific, and Technical Services
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May. 19, 2026
Hearing Enhancement through ARtificially Intelligent NeurotechnoloGy (HEARING) - Proposers' Day
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Aug. 14, 2026
Business Operations Specialist Support
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 28, 2026
Program for International Student Assessment (PISA)
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 21, 2026
Lead-Free DC Support Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 26, 2026
Technical Advisory Support Services: Transition of Food for Peace to USDA
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 27, 2026
Enabling Exploration through Partnerships in Advanced Computing Request for Information (RFI) 2026
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 01, 2026
Lifecycle Sustainment and Technical Support for the Marine Corps Tactical Instrumentation System-Personnel (MCTIS-P)
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 26, 2026
USAC RFP: IT Development, Modernization, and Enhancement (DME) Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 10, 2026
Annual Utility Tunnel Safety & Health Audits (Audit)
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 26, 2026
Request for Information (RFI): MIL-STD-188-164 and MIL-STD-188-165 Industry Week
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jul. 17, 2026
Request for Information (RFI): Private Sector Partnerships in Astrobiology, Planetary Protection, and Space Biology
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Aug. 10, 2026
Molecular Diagnostic Laboratory Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 17, 2026
Employee Benefits Legal Consulting Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 03, 2026
Request for Information: Enhancing Sources Sought Notices for USACE Procurement
54 - Professional, Scientific, and Technical Services
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May. 21, 2026
RFI for AI Enabled Accessibility Tooling
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 22, 2026
ARP HQ Strategic Planning Support
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 26, 2026
Request for Information (RFI) on Scientifically Relevant Fault-Tolerant Quantum Computing Systems
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 09, 2026
Biosurveillance and Biological Detection Capabilities Request for Information
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 05, 2026
Novel and Enhanced Modalities for Optic Nerve Imaging
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 10, 2026
 
 
West Virginia - US Due Date
Sprinkler, Waterflow, Backflow, Dry Fire Pump, Inspection
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 28, 2026
AML - Potential Hibernacula Surveys
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 19, 2026
AML - Potential Hibernacula Surveys
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 27, 2026
SYNOPSIS for Indefinite Delivery Contract (IDC) for Architect Engineer Services - Inland Navigation and Water Resources Planning Services Huntington District USACE - W91237-26-R-A009
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 30, 2026
Design Services for University School of Medicine Building
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Jun. 02, 2026

Showing 4801–4850 of 5341 bids that are currently: Active.