NAICS 541330 · Professional, Scientific, and Technical Services
NAICS 541330: Engineering Services
This industry comprises establishments primarily engaged in applying physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, structures, processes, and systems. The assignments undertaken by these establishments may involve any of the following activities: provision of advice, preparation of feasibility studies, preparation of preliminary and final plans and designs, provision of technical services during the construction or installation phase, inspection and evaluation of engineering projects, and related services.
$25.5M receiptsSBA size standard
18open contracts now
210posted in the last 12 months
5413Architectural, Engineering, and Related Services
This industry comprises establishments primarily engaged in applying physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, structures, processes, and systems. The assignments undertaken by these establishments may involve any of the following activities: provision of advice, preparation of feasibility studies, preparation of preliminary and final plans and designs, provision of technical services during the construction or installation phase, inspection and evaluation of engineering projects, and related services.
Examples of work in this code:
Civil engineering services
Environmental engineering services
Construction engineering services
Mechanical engineering services
Engineers' offices
Robotics automation engineering services
Not in this code
Establishments primarily engaged in planning and designing computer systems that integrate computer hardware, software, and communication technologies are classified in U.S. Industry 541512, Computer Systems Design Services.
Establishments primarily engaged in designing and writing custom software to meet the needs of a particular customer are classified in U.S. Industry 541511, Custom Computer Programming Services.
Establishments primarily engaged in software design, development, and publishing, or software publishing only are classified in Industry 513210, Software Publishers.
Establishments primarily engaged in performing surveying and mapping services of the surface of the earth, including the sea floor are classified in Industry 541370, Surveying and Mapping (except Geophysical) Services.
Establishments primarily engaged in gathering, interpreting, and mapping geophysical data are classified in Industry 541360, Geophysical Surveying and Mapping Services.
Establishments primarily engaged in creating and developing designs and specifications that optimize the use, value, and appearance of products are classified in Industry 541420, Industrial Design Services.
Establishments primarily engaged in providing advice and assistance to others on environmental issues, such as the control of environmental contamination from pollutants, toxic substances, and hazardous materials are classified in Industry 541620, Environmental Consulting Services.
Establishments primarily engaged in engineering research and development are classified in U.S. Industry 541715, Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology).
Establishments primarily engaged in both the design and construction of buildings, highways, and other structures or in managing construction projects are classified in Sector 23, Construction, according to the type of project.
SBA size standard
A business is small under NAICS 541330 if it has no more than $25.5 million in average annual receipts (averaged over the last five completed fiscal years, including affiliates).
Exceptions:
Military and Aerospace Equipment and Military Weapons: $47 million in average annual receipts
Contracts and Subcontracts for Engineering Services Awarded Under the National Energy Policy Act of 1992: $47 million in average annual receipts
Marine Engineering and Naval Architecture: $47 million in average annual receipts
Source: SBA Table of Size Standards, effective 2023-03-17. Always check the size standard printed in the solicitation itself.
Who buys it
Departments that posted the most NAICS 541330 solicitations in the last two years:
Notice of Intent to Award Sole Source · Department of Defense · North Dakota · posted September 28, 2026
SR Power Supplies Rack Detailed Design for ALS-U · Energy · California · posted September 25, 2026
RFP N62742-26-R-3601 Enterprise Construction Management Support Multiple Award Contract (ECMS MAC) · Department of Defense · posted September 25, 2026
IDOS SEI - Request for Proposal - RFI1826913 · Department of Defense · posted September 24, 2026
B-1B Electronic Warfare Advanced Simulation Platform (EWASP) calibration and repair services, Simulation View software licenses, and technical support · Department of Defense · Georgia · posted September 23, 2026
FY 27 NRRE SETA Engineering Services · Department of Defense · Virginia · posted September 23, 2026
Naval Ordnance Safety and Security Activity (NOSSA) Analytical, Technical and Management Support Solicitation N0017426R3101 · Department of Defense · posted September 23, 2026
PM MAGTF C2 PMO Support Services: PM/FM/Ops (SDVOSB Set-Aside) · Department of Defense · Virginia · posted September 23, 2026
Do this kind of work?
Send XL Eagle your price on an open engineering services job. We write and submit the bid under our registrations. If we win, you do the work at your price. No fees.
NAICS 541330 is Engineering Services. This industry comprises establishments primarily engaged in applying physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, structures, processes, and systems. The assignments undertaken by these establishments may involve any of the following activities: provision of advice, preparation of feasibility studies, preparation of preliminary and final plans and designs, provision of technical services during the construction or installation phase, inspection and evaluation of engineering projects, and related services.
What is the SBA size standard for NAICS 541330?
The size standard for NAICS 541330 is $25.5 million in average annual receipts. Firms at or under it count as small businesses for contracts assigned this code.
Are there government contracts for engineering services?
Yes. 18 government contracts are open under NAICS 541330 right now, and 210 were posted in the last 12 months.
Can I bid on NAICS 541330 contracts without registering in SAM.gov?
You need an active SAM.gov registration to win a federal contract in your own name. If you would rather skip that, XL Eagle can bid as the prime contractor using your price, and you do the work as our subcontractor.
XL Eagle