Overview
Custom software, written to spec, for both government and commercial buyers.
In government procurement
In federal and SLED procurement, 541511 is the code agencies file under when they buy bespoke software: custom web applications, API and integration work, legacy modernization, and Section 508 / WCAG accessibility work. It is a registered code on ITC’s SAM.gov record, and it carries a small-business size standard that makes it a common set-aside lane for firms our size. Contracting officers scoping a custom-build requirement filter the bidder pool on 541511 first, so registration plus demonstrated build capability is what gets you into the evaluation.
How a contracting officer reads this code.
UEI PR9KWJPM4JU9 · CAGE 91CE1 · 541511 is a registered NAICS code on ITC’s SAM.gov entity record.
The same capability, commercially
The same build capability serves private-sector buyers with no procurement framing at all. Mid-market and SMB companies need internal tools, customer portals, and integrations between systems they already run. ITC builds and operates Winrove on a Next.js, TypeScript, and Supabase stack, which is the same stack we use on client engagements. For a commercial buyer the question is not the NAICS code, it is whether the software ships and is maintainable: that is what running our own products demonstrates.
- Federal agencies and SLED
- Prime contractors (subcontract / teaming)
- Mid-market and SMB commercial
- Healthcare, finance, professional services
What falls under 541511
The work, and the ITC services that deliver it. Scopes overlap multiple codes. We file under the code that gives your evaluation team the clearest bidder pool.
- Custom web applications (Next.js, React, TypeScript)
- API development and system-to-system integration
- Legacy system modernization
- Section 508 / WCAG 2.1 accessibility remediation
- CI/CD pipeline implementation
- Supabase / Postgres data layer design
Software Development Website Design & Development Mobile App Development
Common questions
What is NAICS 541511 used for?
It classifies the procurement of custom-written software: applications built to a buyer’s specification rather than off-the-shelf product. In government it scopes bespoke build requirements; in the commercial market it covers the same custom application work.
Is 541511 a small-business set-aside code?
It carries a receipts-based small-business size standard, which is why agencies frequently set 541511 requirements aside for small businesses. ITC is a small business registered under this code on SAM.gov.
Does ITC build software for non-government clients under this capability?
Yes. The build capability is the same whether the buyer is an agency or a commercial company. ITC develops and operates Winrove on the same stack it uses for client engagements.
Related codes
Send the solicitation
We'll confirm the right NAICS and PSC for your scope, government or commercial.