This content originally appeared on HackerNoon and was authored by Seed Funding Announcements
\ As AI compresses the B2B software development lifecycle, more apps are coming to market than ever before. But business buyers aren’t cutting corners on security. Enterprise-grade standards like SAML, SCIM, and role-based access control are no longer nice-to-have for these customers, they’re the expectation. For developers, that’s a problem: these features are notoriously difficult to implement and can distract from shipping product.
\ Enter Tesseral, which emerges from stealth today with $3.3M in seed funding to take that burden off developers’ shoulders. The San Francisco-based startup is building the open source authentication infrastructure for B2B software, on a mission to make “security-by-default” the new baseline.
\ “For all the changes that will visit the SaaS industry over the next decade, authentication isn't going anywhere, and fast-moving teams can't afford to burn time and energy building in-house solutions,” Ned O’Leary, Tesseral co-founder and CEO explained. “Tesseral empowers startups with secure, production-grade infrastructure that's fast to implement, easy to maintain, and secure."
\ Co-founders Ned O’Leary and Ulysse Carion met while working at Gem, where they bonded over a shared enthusiasm for solving problems most people try to avoid. Ned previously worked at BCG, specializing in M&A and corporate strategy. Ulysse, a veteran security engineer, led identity efforts, including SSO, permissions, and audit logging, at Segment through its $3.2B acquisition by Twilio. Before launching Tesseral, the pair built SSOReady, an open source SAML auth tool used by early adopters like Gumloop, GovAI, and RunReveal.
\ Tesseral counts a stacked group of early-stage investors, including Dalton Caldwell, Y Combinator managing partner; Jessica Livingston and Paul Graham, Y Combinator co-founders; Calvin French-Owen, co-founder and former chief technology officer of Segment; Steve Bartel and Nick Bushak, co-founders of Gem; and Mike Wiacek, founder of Stairwell; among others.
\ “Everyone needs auth, but it’s still surprisingly painful,” said Caldwell. “Ned and Ulysse have built something elegant that developers actually want to use—and that’s rare.”
\ With fresh capital in hand, Tesseral is scaling its open source platform to offer developers flexibility and high-growth companies the enterprise-grade capabilities they need to build with confidence.
\ The platform is open for early access at www.tesseral.com.
This content originally appeared on HackerNoon and was authored by Seed Funding Announcements
Seed Funding Announcements | Sciencx (2025-05-08T18:59:04+00:00) Tesseral Raises $3.3M Seed to Bring Open Source Auth to B2B Software. Retrieved from https://www.scien.cx/2025/05/08/tesseral-raises-3-3m-seed-to-bring-open-source-auth-to-b2b-software/
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