Warren Seine is a founding engineer and seasoned software architect with 15 years’ experience building scalable web and systems software from startups to large engineering organizations. Based in Paris, he has led technical teams and shipped production services across C#, Scala, TypeScript and Python—most recently designing biometric authentication and injection-attack detection at Onfido and spearheading revenue OS development at Pearl. His background includes founding CTO work where he built a cloud 3D collaboration platform (Minko) that served industrial clients and required bespoke rendering, streaming and cross-platform delivery. A pragmatic full-stack builder and contributor to notable open-source UI projects like Excalidraw, he blends hands-on front-end polish with low-level performance and security engineering. Known for turning complex research and system challenges into production-ready features, he combines product instincts with deep technical craft.
15 years of coding experience
18 years of employment as a software developer
Master of Science (M.S.) Computer Science, Master of Science (M.S.) Computer Science at EPITA: Ecole d'Ingénieurs en Informatique
Virtual whiteboard for sketching hand-drawn like diagrams
Role in this project:
Front-end Developer
Contributions:6 commits, 7 PRs, 16 comments in 3 months
Contributions summary:Warren primarily contributed to the front-end development of the Excalidraw application. They implemented features related to color input handling and normalization within the ColorPicker component. Additionally, the user addressed UI issues, including fixing emoji rendering and improving naming consistency within the application's components and data structures. These contributions enhance the user interface and improve the overall user experience.
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