5 active solicitations·4 federal agencies·Last refreshed Jul 2, 2026
Active opportunities in NAICS 541690
Refreshed continuously from SAM.gov and partner agencies. Showing the 5 most-urgent active solicitations.
Top primes in NAICS 541690
Federal primes ranked by total obligated dollars under NAICS 541690 over the last 5 fiscal years. Source: USAspending.gov.
#1
DOMESTIC AWARDEES (UNDISCLOSED)5 contracts · Agency for International Development
$1.2B
#2
MANTECH ADVANCED SYSTEMS INTERNATIONAL, INC.4 contracts · Department of Defense
$460.3M
#3
SCIENCE APPLICATIONS INTERNATIONAL CORPORATION5 contracts · Department of Transportation
$429.9M
#4
LEIDOS, INC.2 contracts · National Aeronautics and Space Administration
$424.5M
Agencies buying NAICS 541690
The top federal customers historically active in NAICS 541690by obligated dollars. Match your past performance to the agency that’s most likely to write your next contract.
#1
Department of Defense40 contracts
$3.4B
#2
Agency for International Development15 contracts
$2.1B
#3
Department of Health and Human Services11 contracts
$821.0M
#4
Department of Energy8 contracts
$819.6M
Frequently asked questions
What is NAICS 541690?
NAICS 541690 is the federal industry code for Other Scientific & Technical Consulting Services. The Census Bureau maintains the NAICS taxonomy; federal contracting officers use it to classify solicitations and confirm bidder eligibility.
How do I bid on federal contracts as a small business in NAICS 541690?
Register your business in SAM.gov, get a UEI, and confirm your NAICS code matches the solicitation's primary NAICS. Then write a capability statement that maps your past performance to the work in the RFP. Themis automates the matching and gives you a free AI brief for every active opportunity.
Do I need a SAM.gov registration to bid?
Yes — every federal contract award above the micro-purchase threshold requires the vendor to have an active SAM.gov registration with a Unique Entity Identifier (UEI) and the relevant NAICS codes listed on the registration.
What set-asides apply to NAICS 541690?
Common federal set-asides — Small Business (SBA), 8(a), HUBZone, SDVOSB, WOSB, EDWOSB — apply per solicitation, not per NAICS code. Each opportunity declares its own set-aside; Themis displays the eligibility class on every card so you can filter to ones you qualify for.
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