Professional, Scientific, and Technical Services
NAICS 541330: Engineering Services
NAICS 541330 is the North American industry classification for engineering services, within the Professional, Scientific, and Technical Services sector (NAICS 54). Government buyers tag contract opportunities with this code, and vendors list it in their registrations so matching tenders get routed to them.
Last updated: 2026-06-12
What this code covers
Applying physical laws and principles of engineering in the design, development, and use of machines, materials, instruments, structures, and systems.
If this code describes the activity that generates most of your revenue, it is a candidate for your primary NAICS code; if it covers adjacent work you genuinely perform, list it as a secondary code. In US federal contracting, the NAICS code on a solicitation also fixes the SBA size standard that decides whether your firm counts as a small business for that competition.
502 open tenders with NAICS 541330 right now
- Development of a Utility Master PlanENERGY, DEPARTMENT OF.ENERGY, DEPARTMENT OF.BROOKHAVEN NATL LAB -DOE CONTRACTORUSA · NYClosing date TBD
- Navy’s Shipyard Infrastructure Optimization Program (SIOP) Support ServicesDEPT OF DEFENSE.DEPT OF THE NAVY.NAVSEA.NAVSEA WARFARE CENTER.NAVAL SURFACE WARFARE CENTERUSAClosing date TBD
- Air National Guard Air Combat Training System Services (ACTS)DEPT OF DEFENSE.DEPT OF THE ARMY.NATIONAL GUARD BUREAU.HQ NGB.HQ NGB DIR OF ACQUISITIONS.W39L USA NG READINESS CENTERUSA · MDClosing date TBD
- Up to Three (3) New Indefinite Delivery Contract for Engineering, Design and ...DEPT OF DEFENSE.DEPT OF THE ARMY.US ARMY CORPS OF ENGINEERS.ENGINEER DIVISION MISSISSIPPI VALLEY.ENDIST VICKSBURG.W07V ENDIST VICKSBURGUSA · MSClosing date TBD
- ARCHITECT-ENGINEERING (A-E) SERVICES FOR INDEFINITE DELIVERY/INDEFINITE QUANT...DEPT OF DEFENSE.DEPT OF THE AIR FORCE.AIR FORCE SPECIAL OPERATIONS COMMAND.FA4417 1 SOCONSUSA · FLClosing date TBD
Showing the 5 closing soonest of 502 open tenders carrying this code.
Using this code in Canada
NAICS is jointly maintained by the United States, Canada, and Mexico, so 541330 means the same thing on both sides of the border. Canadian federal tenders on CanadaBuys, however, are primarily categorized with UNSPSC codes (and legacy GSINs), so Canadian suppliers should identify their UNSPSC categories as well — see the GSIN code lookup and the GSIN explainer.
Related codes and tools
- NAICS 541511: Custom Computer Programming Services
- NAICS 541512: Computer Systems Design Services
- NAICS 541513: Computer Facilities Management Services
- NAICS 541519: Other Computer Related Services
- NAICS 541310: Architectural Services
- Interactive NAICS code lookup (all curated codes)
- What is a NAICS code?
Code definition: NAICS 2022 v1 (curated 173). NAICS is maintained by the US Census Bureau, Statistics Canada, and INEGI and is in the public domain. This page is general information, not legal advice.