What is NAICS code 541330?

NAICS 541330 is the industry "Engineering Services" in the North American Industry Classification System, part of the Professional, Scientific, and Technical Services sector (54).

What is the size standard for NAICS 541330?

The SBA sets a small business size standard for each NAICS code, either average annual receipts or number of employees. Check the current value for 541330 in the SBA table of size standards on sba.gov; it changes from time to time.

NAICS Code 541330: Engineering Services

NAICS code 541330 is the industry for engineering services in the Professional, Scientific, and Technical Services sector. Agencies tag every federal contract with a NAICS code, so this is the code to list in your SAM.gov registration and to search for bids.

Government contracts under NAICS 541330

Federal agencies obligated $149B on contracts under NAICS 541330 from FY2024 to FY2026, including $45.1B in FY2026. The biggest buyers were the Department of Defense, the General Services Administration, the Department of Homeland Security. The largest contractors were Electric Boat Corporation, Booz Allen Hamilton Inc, Science Applications International Corporation.

See the full breakdown: government engineering contracts, who wins and who buys.

Open government bids for NAICS 541330

The newest open notices from SAM.gov. Bidding needs a free SAM.gov registration.

A-E Cost Estimation Services
Energy, Department of · Solicitation · NAICS 541330 · NY · No Set aside used
Posted Nov 1, 2026 · Responses due Dec 4, 2026
A DEPT INFRASTRUCTURE, LIBRARY AND SYSTEMS ADMINISTRATION SUPPORT
Dept of Defense · Sources Sought · NAICS 541330 · VA · No Set aside used
Posted Oct 30, 2026 · Responses due Nov 17, 2026
Governor Control ProgrammingClosing soon
Dept of Defense · Solicitation · NAICS 541330 · MT · Small Business Set Aside - Total
Posted Oct 30, 2026 · Responses due Nov 6, 2026
Energy Automation Operational Technology Systems (EAOTS) Automated Fuel Handling Equipment Maintenance
Dept of Defense · Presolicitation · NAICS 541330 · No Set aside used
Posted Oct 30, 2026 · Responses due Nov 16, 2026
SeaPort: CNSP PA/VI Support ServicesClosing soon
Dept of Defense · Solicitation · NAICS 541330 · CA · SBA Certified Women-Owned Small Business (WOSB) Program Set-Aside (FAR 19.15)
Posted Oct 30, 2026 · Responses due Nov 5, 2026

See all 18 open bids under NAICS 541330

Small business size standard for NAICS 541330

To bid on small business set-aside contracts under NAICS 541330, your business must be small under the SBA size standard for this code, measured either by average annual receipts or by number of employees. The values are updated periodically, so check the current SBA table of size standards before you bid.

Other NAICS codes in 5413

How to choose the right NAICS code

Pick the 6-digit code that best describes what you sell. List it as your primary code in SAM.gov, and add other codes for related work. Agencies choose one NAICS code for each contract, so check the codes on past awards for the kind of work you do. Search all codes in the NAICS code lookup.

Related guides

Frequently asked questions

What is NAICS code 541330?: NAICS 541330 is the industry "Engineering Services" in the North American Industry Classification System, part of the Professional, Scientific, and Technical Services sector (54).
What is the size standard for NAICS 541330?: The SBA sets a small business size standard for each NAICS code, either average annual receipts or number of employees. Check the current value for 541330 in the SBA table of size standards on sba.gov; it changes from time to time.
Are there government contracts for NAICS 541330?: Yes. Federal agencies obligated $149B on contracts under NAICS 541330 from FY2024 to FY2026, and 18 notices are open right now.