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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 351–400 of 5764 bids that are currently: Active.

Denotes bidding opportunities that have been amended

California - US Due Date
Engineering Services for HSIP Cycle 12 Pedestrian School Crossings
54 - Professional, Scientific, and Technical Services
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Apr. 09, 2026
Corporate: Diamond Valley Lake Holland Road Storm Drainage Improvements - Survey
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 02, 2026
BUILDING EVALUATION AND STRUCTURAL ENGINEERING SERVICES
54 - Professional, Scientific, and Technical Services
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Apr. 14, 2026
Corporate: Roadway Signs, Pavement Delineation and Marking \u2013 Lead Compliance Plan
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 08, 2026
Corporate: Roadway Signs, Pavement Delineation and Marking \u2013 Time-Related Overhead (Wday)
54 - Professional, Scientific, and Technical Services
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Apr. 08, 2026
Site for San Diego College of Continuing Education
54 - Professional, Scientific, and Technical Services
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Apr. 09, 2026
Engineering Services: WCL Phase III Design Feasibility Study
54 - Professional, Scientific, and Technical Services
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Apr. 17, 2026
Corporate: Alameda Aquatic Center - SWPPP
54 - Professional, Scientific, and Technical Services
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Apr. 04, 2026
Corporate: Alameda Aquatic Center - Surveying
54 - Professional, Scientific, and Technical Services
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Apr. 04, 2026
Environmental and Engineering Services
54 - Professional, Scientific, and Technical Services
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Apr. 07, 2026
Corporate: Ave 12 to Pecan Lane: HMA, CRCP, Minor Concrete & Lighting - Lead Compliance
54 - Professional, Scientific, and Technical Services
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Apr. 09, 2026
Corporate: Ave 12 to Pecan Lane: HMA, CRCP, Minor Concrete & Lighting - Construction Staking
54 - Professional, Scientific, and Technical Services
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Apr. 09, 2026
Corporate: Ave 12 to Pecan Lane: HMA, CRCP, Minor Concrete & Lighting - Prepare SWPPP
54 - Professional, Scientific, and Technical Services
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Apr. 09, 2026
Corporate: Ave 12 to Pecan Lane: HMA, CRCP, Minor Concrete & Lighting - SWPPP Implementation
54 - Professional, Scientific, and Technical Services
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Apr. 09, 2026
Corporate: Cold Plane, HMA (Type A) & Modify Traffic Monitoring Stations - Lead Compliance
54 - Professional, Scientific, and Technical Services
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Apr. 02, 2026
Corporate: Cold Plane, HMA (Type A) & Modify Traffic Monitoring Stations - Construction Staking
54 - Professional, Scientific, and Technical Services
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Apr. 02, 2026
Corporate: Cold Plane, HMA (Type A) & Modify Traffic Monitoring Stations - Prepare SWPPP
54 - Professional, Scientific, and Technical Services
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Apr. 02, 2026
Corporate: Cold Plane, HMA (Type A) & Modify Traffic Monitoring Stations - SWPPP Implementation
54 - Professional, Scientific, and Technical Services
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Apr. 02, 2026
Professional Engineering Services
54 - Professional, Scientific, and Technical Services
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Apr. 24, 2026
IRRIGATION PLAN
54 - Professional, Scientific, and Technical Services
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Apr. 09, 2026
Engineering and Design Services
54 - Professional, Scientific, and Technical Services
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Apr. 07, 2026
Design Services for Circulation Improvement Program
54 - Professional, Scientific, and Technical Services
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Apr. 06, 2026
LANDSCAPE ARCHITECTURAL DESIGN AND CONSULTING SERVICES
54 - Professional, Scientific, and Technical Services
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Apr. 09, 2026
Engineering and Related Professional Services
54 - Professional, Scientific, and Technical Services
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May. 07, 2026
Library Design & Engineering Services
54 - Professional, Scientific, and Technical Services
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Apr. 20, 2026
Corporate: East Pipeline Inspection and Rehabilitation Project - SWPPP
54 - Professional, Scientific, and Technical Services
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Apr. 16, 2026
Professional Construction Document Review
54 - Professional, Scientific, and Technical Services
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Apr. 16, 2026
Corporate: Codoni Avenue Reconstruction - SURVEYING
54 - Professional, Scientific, and Technical Services
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Apr. 01, 2026
Corporate: Codoni Avenue Reconstruction - SWPP PLAN ONLY
54 - Professional, Scientific, and Technical Services
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Apr. 01, 2026
ARCHITECTURAL CONSULTATION AND DESIGN SERVICES
54 - Professional, Scientific, and Technical Services
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Apr. 17, 2026
Architectural and Engineering
54 - Professional, Scientific, and Technical Services
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May. 27, 2026
General Planning & Building Plan Review
54 - Professional, Scientific, and Technical Services
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Apr. 13, 2026
DSA INSPECTOR OF RECORD
54 - Professional, Scientific, and Technical Services
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Apr. 02, 2026
Consulting Services for Water Master Plan
54 - Professional, Scientific, and Technical Services
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Apr. 16, 2026
Engineering Design Services
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
Data Center Planning and Conceptual Services
54 - Professional, Scientific, and Technical Services
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Apr. 03, 2026
Community Development Services
54 - Professional, Scientific, and Technical Services
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Apr. 10, 2026
Corporate: UPPER YOSEMITE CREEK DAYLIGHTING - SWPPP
54 - Professional, Scientific, and Technical Services
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Apr. 02, 2026
Corporate: 6B E St Waterline Replacement and 9th St Improvements Project - SWPPP
54 - Professional, Scientific, and Technical Services
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Apr. 02, 2026
Corporate: 6B E St Waterline Replacement and 9th St Improvements Project - Surveying
54 - Professional, Scientific, and Technical Services
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Apr. 02, 2026
Corporate: East Pipeline Inspection and Rehabilitation Project - SWPPP\/Erosion Control
54 - Professional, Scientific, and Technical Services
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Apr. 15, 2026
Corporate: East Pipeline Inspection and Rehabilitation Project - Quality Control Testing
54 - Professional, Scientific, and Technical Services
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Apr. 15, 2026
Corporate: Polyester Concrete Overlay, Concrete Barrier, & Structural Concrete \u2013 Lead Compliance Plan Ls 1
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
Corporate: Polyester Concrete Overlay, Concrete Barrier, & Structural Concrete \u2013 Level 2 Critical Path Method Schedule Ls 1
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
Corporate: Polyester Concrete Overlay, Concrete Barrier, & Structural Concrete \u2013 Time-Related Overhead (Ls) Ls 1
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
Corporate: Polyester Concrete Overlay, Concrete Barrier, & Structural Concrete \u2013 Lead Compliance Plan
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
Corporate: Pacific-Wanda-Louise-Walnut Area Street Rehabilitation - Survey
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 01, 2026
Corporate: Pacific-Wanda-Louise-Walnut Area Street Rehabilitation - Land Surveyor
54 - Professional, Scientific, and Technical Services
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Apr. 01, 2026
Corporate: Pacific-Wanda-Louise-Walnut Area Street Rehabilitation - SWPPP Planning
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 01, 2026
Corporate: Pacific-Wanda-Louise-Walnut Area Street Rehabilitation - Traffic Engineer
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 01, 2026

Showing 351–400 of 5764 bids that are currently: Active.