Fundraising Fox

Ulysse Carion

Founder

Founder at Tesseral

San Francisco, California, United States

FoundedTesseral Β· YC

About

Ulysse Carion is cofounder and CTO at Tesseral. He previously worked at Segment, where he developed permissions and identity resolution systems, and at Gem. Carion has contributed to IETF standards, including RFC 8927.

LinkedIn β†—X / Twitter β†—
Latest on 𝕏

Ulysse Carion @ucarion

Could not be more excited about @TesseralHQ self-hosting. Join the waitlist: https://t.co/50FR5jp2j8 https://t.co/kmqbBuCdbK

Sep 3, 2025 Β· β™₯ 5 Β· ⇄ 2

Ulysse Carion @ucarion

Deployment flexibility is one of the biggest reasons why people prefer @TesseralHQ to Auth0... that, and the fact that we're built specifically for business software, makes B2B SaaS user management / auth dead simple. https://t.co/3OLAky7kim

Aug 11, 2025 Β· β™₯ 4 Β· ⇄ 1

Ulysse Carion @ucarion

Auth products have a ton of feature bloat with consumer junk and customizations no one building B2B products will ever need. It's really annoying. That's why we built @TesseralHQ, to get B2B auth right. It's a great product. You should check it out: https://t.co/KcTU04rWqA https://t.co/Vhmxt0Cnhd

Aug 6, 2025 Β· β™₯ 6 Β· ⇄ 1

Founder at TesseralYC W24

Intro paths

YC

Ulysse went through Y Combinator (Winter 2024) β€” any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was David Lieb, General Partner at Y Combinator β€” the partner who ran Tesseral's batch and knows the company first-hand. YC profile β†—

β†’

In turn, Ulysse can intro founders to Tesseral's investors below.

Tesseral's investors Β· 1

Y Combinator

Co-founders at Tesseral

NONed O'Leary
Ned O'LearyFounder

Experience

  1. TesseralCofounder, CTOcurrent2023 β€” presentSan Francisco, California, United States
  2. GemSoftware Engineer2022 β€” 2023San Francisco, California, United States
  3. SegmentSoftware Engineer2017 β€” 2022San Francisco, California, United States
  4. Quizlet, Inc.Web Engineering Intern2016San Francisco, California, United States
  5. YelpSoftware Intern2015San Francisco, California, United States

Education

  1. UC Berkeley College of EngineeringBachelor of Science (BS), Computer Science and Electrical Engineering2014 β€” 2017

Same school

Also attended UC Berkeley College of Engineering29

HariFellow at Clear VenturesAlejandro GomezInvestor at IVP (Institutional Venture Partners)Alpin YukselogluPartner, Investing & Research at ParadigmDivyansh SaksenaAnalyst at Congruent VenturesEdward YangSenior Associate at Prelude VenturesLan WuAnalyst at Fusion

+ 23 more

Shared employers

Also worked at Tesseral1

Ned O'LearyFounder at Tesseral

Also worked at Gem3

Cathy GaoPartner at Sapphire VenturesDaniel LevineInvestor at AccelMaggie ZhangFounder at Read Bean

Also worked at Segment57

Byron DeeterPartner at Bessemer Venture PartnersDave MunichielloInvestor at GV (Google Ventures)Sangeen ZebInvestor at GV (Google Ventures)Scott RaneyManaging Director at Redpoint VenturesDylan PearcePartner at GreycroftLauren ReederInvestor at Sequoia Capital

+ 51 more

Also worked at Quizlet, Inc.7

Tory PattersonCo-founder and Managing Partner at Owl VenturesGreg SandsFounder and Managing Partner at Costanoa VenturesMark SelcowPartner at Costanoa VenturesRachael LeePrincipal at GSV VenturesArun SaigalInvestor at ThunkableAnika GuptaCOO – Foundation at Astera Institute

+ 1 more