Jean-sebastien Delfino
Co-Founder & CTO at Stealth AI Startup
San Carlos, California, United States
Summary
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SeniorJean-sebastien Delfino is a seasoned software and AI leader with 20+ years building cloud-native systems, developer tools, and generative AI products, currently co-founding and serving as CTO of a stealth AI startup focused on agents for software maintenance. He brings deep enterprise and open-source experience from a long IBM tenure—leading efforts across Watsonx, sustainability geospatial AI, supply chain and marketing assistants—and longstanding elected leadership and committershop at the Apache Software Foundation. A pragmatic technical lead and builder, he has repeatedly modernized products and developer toolchains, shipped scalable metering and cloud services, and mentored large engineering teams. Jean-sebastien combines hands-on engineering with community stewardship and public speaking at conferences like ApacheCon and JavaOne, showing a talent for translating research into production. Based in San Carlos, CA, he mixes high-performance sports discipline—ski racing and tennis—with a continual drive to find faster, smarter ways to program and train computers. Notably, his career spans both early startup scrappiness (employee #3 roles) and structured enterprise R&D, giving him rare breadth across product, platform, and open-source ecosystems.
20 years of coding experience
16 years of employment as a software developer
French, English, Spanish
Github Skills (23)
apache10
java10
metering10
sca10
eslint8
benchmark8
javascript7
linter7
ecmascript7
ibm-watson6
static-code-analysis6
logging5
browserslist5
workspace5
scribe5
Programming languages (7)
Github contributions (5)
watsonwork/watsonwork-echo
Oct 2016 - Feb 2017
Contributions:27 commits, 26 pushes, 1 branch in 4 months
workspaceibmchatbotibm-watsonechoes
apache/tuscany-sca-1.x
Mar 2006 - Sep 2008
Mirror of Apache Tuscany SCA 1.x
Contributions:4676 commits in 2 years 7 months
javaapachetuscanysca
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