Julien Stoeffler
Senior software engineer focused on identity verification and full‑stack
Paris, Ile-de-France
Summary
Identity-verification and mobile-native engineering: At Checkout.com Julien works on Identity Verification, orchestrating computer-vision algorithms with manual operator input to improve accuracy while addressing privacy and fraud constraints, with a mobile/native focus. theorg+1
Founder and full-stack operator: As founder of Unixal he built and managed a portfolio of websites (reported ~$300k value), engineered a backend handling a site with 40,000+ affiliate offers, and automated marketing workflows using AI. getprog+1
Ad-tech and large-scale backend experience: Previously at Criteo (and earlier work on ad SDKs), he contributed to user-identification solutions addressing Safari privacy measures within high-throughput, large-server infrastructures. getprog+1
Open-source contributions and technical breadth: Active on GitHub with contributions and issue participation across projects (ProcessOut.js, Picasso, SPADE), indicating engagement with open-source engineering, reviews, and repo maintenance. github+2