Burns Media Intelligence for Professionals

Federal Contracting Guide · Professional, Scientific & Technical Services

541330Engineering Services

What NAICS 541330 covers, the SBA size standard, typical federal customers, related codes, and the tools you need to actually bid under this code.

NAICS code
541330
Sector
Professional, Scientific & Technical Services
Federal spend
Very High
Size standard
Revenue: $25.5m avg annual receipts (exceptions up to $47m)

What NAICS 541330 covers

Applying physical laws and engineering principles to design, develop, and use machines, materials, systems, and structures. Covers civil, mechanical, electrical, aerospace, and systems engineering.

Major federal procurement category. Expect hundreds of millions to billions in annual federal obligations.

Size standard & small business eligibility

The SBA size standard is revenue-based. To qualify as a small business under this NAICS code, your 5-year average annual receipts must stay under the threshold below. Revenue is averaged across your most recent 5 completed fiscal years.

Threshold: Revenue: $25.5m avg annual receipts (exceptions up to $47m).

If you're under this threshold, you qualify as a small business for federal procurement under this NAICS — which unlocks set-aside opportunities (8(a), HUBZone, SDVOSB, WOSB, and others). Not sure which set-asides you qualify for?

Check your set-aside eligibility

10 questions, takes under 3 minutes. Returns the exact SBA programs you qualify for — 8(a), HUBZone, SDVOSB, WOSB, EDWOSB.

Run the eligibility check →

Open federal contracts under NAICS 541330 6 active

Live solicitations posted on SAM.gov, soonest deadline first. Refreshed May 31, 2026.

Get every new NAICS 541330 contract by email

The Contract Wire emails every new federal solicitation that matches your NAICS, set-asides, and place of performance — within hours of it posting. Free, daily, no spam.

Get the daily wire → Open SAM.gov search

Related work this NAICS covers

engineering services systems engineering mechanical electrical civil engineering aerospace design analysis MBSE

Use these terms in your capability statement and past-performance writeups to signal fit to contracting officers who filter by NAICS.

Next step: your capability statement

Once your NAICS code is registered in SAM.gov, your capability statement is the single most-requested document from federal contracting officers and large primes. It's how buyers decide whether to put you on a short list or send you a sources-sought notice.

Build a capability statement (NAICS 541330 pre-filled)

Free interactive builder. Enter your company info, past performance, and certifications — export a clean one-page PDF formatted the way contracting officers actually want to read it.

Start your capability statement →

Related NAICS codes

Firms that win work under NAICS 541330 often also register under these codes.

NAICS 541370
Surveying and Mapping Services
NAICS 541380
Testing Laboratories and Services
NAICS 541310
Architectural Services

Reference guides

Evergreen explainers for small federal contractors. Free, no signup.

Not sure NAICS 541330 is the right fit?

Many new federal contractors register under the wrong NAICS the first time — which means their set-aside eligibility, size standard, and match to opportunities are all miscalibrated. Our finder matches your capability description to the top federal-relevant codes in 60 seconds.

Find your best-fit NAICS codes

Paste your capability description. Returns the top 5 matching NAICS codes with size standards and federal spend level for each.

Open the NAICS finder →

Get The Contract Wire in your inbox

Daily briefing on federal contracting — new SAM.gov postings, set-aside alerts, agency spending shifts. Every weekday morning, 5-min read, free.

This page is a federal-contracting reference, not legal or procurement advice. Always confirm your NAICS classification and size standard at sba.gov/size-standards.