Julien Cayzac
Distinguished Application Architect
Greater Tokyo Area Japan
Summary
🤩
Rockstar🎓
Top SchoolJulien Cayzac is a Distinguished Application Architect based in the Greater Tokyo Area with 17 years of experience designing large-scale mobile and fintech systems. At Rakuten he leads fintech technical strategy, service architecture standardization, and enterprise AI adoption while mentoring engineers across regions. His background spans hands-on mobile and AR/CV development, framework and identity platform engineering, competitive intelligence, and early R&D in GPS and 3D graphics, reflecting a rare blend of product, research and systems skills. A lifelong learner and physics enthusiast, he keeps technical curiosity alive through independent study in financial economics and physics. Colleagues know him as a top performer who moves between deep implementation work and high-level strategy, and who often mentors peers into stronger technical leaders. Outside work he balances family life, home improvement projects and long cycling rides along rivers.
17 years of coding experience
19 years of employment as a software developer
M.Sc, Electrical Engineering, Computer Science, IT Management, M.Sc, Electrical Engineering, Computer Science, IT Management at EFREI - Grande école du numérique
French, English, Japanese
Stackoverflow
1,441reputation
184kreached
19answers
9questions
Github Skills (200)
beautifier10
testing10
padding10
automation10
svg10
nike10
browser10
firefox10
api10
aes-gcm10
credentials10
static-site-generator10
highlightjs10
nodejs10
package-manager10
Programming languages (25)
Github contributions (5)
jcayzac/copepod-modules
Aug 2024 - Feb 2025
A collection of ESM modules I use in my projects.
Contributions:1 review, 229 PRs, 348 pushes in 5 months
astroastro-componentastro-integrationrehype-pluginremark-plugin
rakutentech/plantuml-docker
Nov 2020 - May 2021
Docker image for running a PlantUML server using the Rakuten theme
Contributions:2 releases, 28 commits, 10 PRs in 5 months
docker-imagedockerplantumlrakuten
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.