# Co-founder and CEO, Clerk

Source: https://startwithidentity.com/experts/colin-sidoti/
Last updated: 2026-09-20
License: content by Start with Identity. Cite the source URL.

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## Bio

Colin Sidoti co-founded Clerk in 2019 with his brother Braden Sidoti. Clerk ships authentication as embeddable UI components, APIs, and an admin dashboard, aimed at frontend developers who want sign-in, user management, and organizations working in an afternoon.

Profile built from public company and press records.

## Where their work shows up

Clerk pushed the industry argument about where authentication should live. Hosted redirect pages are easier to secure and harder to make feel like your product; component-level auth inverts that, and pulls session handling, organization switching, and role management into the framework a team already uses. See the [Clerk profile](https://startwithidentity.com/vendors/ciam/clerk/), [Auth0 vs Clerk](https://startwithidentity.com/compare/auth0-vs-clerk/), and the [best CIAM for startups](https://startwithidentity.com/rankings/best-ciam-for-startups/) ranking.