Guillaume Salles
Senior Staff Software Engineer at Shopify
Montreal, Quebec, Canada
Summary
🤩
Rockstar🎓
Top SchoolGuillaume Salles is a Senior Staff Software Engineer and former co‑founder/CTO with 11 years of experience building full‑stack, collaborative products and developer tools. Based in Montreal, he led Liveblocks to provide real‑time multiplayer primitives—contributing core client features, auth refactors, and documentation that make collaboration easy to integrate. Equally comfortable shaping product from discovery to delivery, he pairs a UX mindset with deep engineering across frontend and backend stacks (JS, TypeScript, .NET, Python). His background spans startups to scaleups—including engineering leadership at InVision and Breather—and a history of shipping high‑scale services and machine‑learning integrations. Known for pragmatic architecture and hands‑on execution, he brings founder grit to large‑company impact at Shopify.
11 years of coding experience
14 years of employment as a software developer
Master 1 Informatique, Master 1 Informatique at SUPINFO
French, English
Github Skills (11)
typescript10
javascript10
fullstack-development10
websocket10
typescripts10
realtime10
full-stack10
react10
typescript-types10
crdt9
collaboration9
Programming languages (7)
Github contributions (5)
liveblocks/liveblocks
May 2021 - Jan 2023
The best apps in the AI era aren’t solo experiences—they’re collaborative. Liveblocks provides customizable pre‑built features to make your product multiplayer, engaging, and AI‑ready. All without derailing your roadmap.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:33 releases, 304 reviews, 372 commits in 1 year 7 months
Contributions summary:Guillaume's commits primarily focus on the development and maintenance of the Liveblocks client library. They have implemented new features, such as the ability to delete items and to set items in the LiveList, improving functionality for both backend and frontend operations. The user also addressed bug fixes and contributed to improvements to the internal codebase and documentation, showcasing a focus on enhancing the project's usability and core capabilities. The contributions included the refactor of the authentication component.
operational-transformationleancloudblockstackzustandconflict-resolution
Lona-Web/Lona-Web
Dec 2017 - Jan 2018
Contributions:85 commits, 2 PRs, 72 pushes in 1 month
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.