Ulysse Carion

Co-Founder

San Francisco, California, United States9 yrs experience

Most Likely To SwitchHighly Stable

Key Highlights

Cofounder and CTO of Tesseral, focusing on open source auth infrastructure.
Led significant product development at Gem and Segment.
Expert in full-stack development and backend architecture.

Stackforce AI infers this person is a SaaS-focused full-stack engineer with strong backend architecture skills.

Contact

ulysse.carion@tesseral.com LinkedIn

Skills

Core Skills

Full-stack DevelopmentBackend ArchitectureDatabase Management

Other Skills

Applicant Tracking Systems (ATS)Audit loggingData refreshingDatabase migrationPermissioningPollingProject managementReal-time integrationScalabilitySingle sign-onUI developmentWebhooks

About

I just love enterprise software, man. IDK what to tell you. Reach out at: ulysse.carion@tesseral.com

Experience

9 yrs

Total Experience

2 yrs 3 mos

Average Tenure

2 yrs 10 mos

Current Experience

Tesseral

Cofounder, CTO

Aug 2023 – Present · 2 yrs 10 mos · San Francisco, California, United States · On-site

The open source auth infrastructure for business software.
https://tesseral.com

Gem

Software Engineer

Mar 2022 – Aug 2023 · 1 yr 5 mos · San Francisco, California, United States · On-site

Full-stack software engineer. Gravitated toward mostly backend and architectural work, where I'd have the greatest impact for the team.
Led development of Application Review, where recruiters can sift through inbound applications quickly from within Gem's app. That required fleshing out a complex UI on top of a two-way realtime integration between Gem and customer Applicant Tracking Systems (ATSs).
Led development of a two-way realtime integration between Gem and Workday ATS in support of Application Review. Workday's ATS isn't designed to be integrated with in such a deep way, so we had to get creative with a mix of webhooks, polling, and periodic data refreshing.

Full-stack developmentBackend architectureUI developmentReal-time integrationApplicant Tracking Systems (ATS)

Segment

Software Engineer

Sep 2017 – Mar 2022 · 4 yrs 6 mos · San Francisco, California, United States · On-site

Full-stack software engineer. Leaned toward working on shoring up solid foundations for emerging needs at Segment. Segment was acquired by Twilio in Nov 2020.
Took on a generalist role in developing Twilio Engage (fka Segment Journeys), a flagship product, from idea to public beta in 7 months, and GA a few months later. Engage is at the heart of Twilio's overall business strategy today.
Led migration of the identity resolution database within Segment Personas (>70TB, >500k RPS) from FoundationDB to DynamoDB. We went from running the largest FDB cluster in the world to a merely top-15 DynamoDB instance.
Led revamp of single-sign-on, permissioning, audit logging, and in-app organization systems. Mostly in service of winning and supporting bigger-than-ever enterprise customers. Worked with all of R&D to help them adapt to new org-wide software patterns these features required.

Full-stack developmentDatabase migrationSingle sign-onPermissioningAudit loggingDatabase management