Sebastien Flory is a versatile software engineer and engineering leader with 13+ years building high-performance web and game systems, currently applying generative AI to help teams at Dust. He combines deep expertise in runtime and network optimization (PHP, Java, C++, Python, JS, bash), database sharding and low-level performance tuning with product-driven instincts honed as founder and CTO of game businesses like Urban Rivals. His background spans shipping multiplayer/mobile games, leading engineering orgs, and designing systems for massive concurrent play—experience that informs pragmatic tradeoffs between scalability and user experience. An active contributor to open-source runtime code (notably performance and bug fixes in the Spine 2D animation runtimes), he focuses on eliminating inefficiencies such as needless allocations or batch flushes. Based in Paris, he’s motivated by pushing state-of-the-art products, loyalty to users, and bringing technical craftsmanship to fast-growing teams.
13 years of coding experience
27 years of employment as a software developer
Deug Math Physics Computers, Deug Math Physics Computers at Paris-Sud University (Paris XI)
Contributions:6 commits, 2 PRs, 18 comments in 1 year 2 months
Contributions summary:Sebastien primarily contributed to bug fixes and optimizations within the Spine runtimes library. Their work involved correcting data types, addressing issues related to Starling framework updates, preventing excessive polygon batch flushing, and resolving listener behaviors. The user also focused on avoiding unnecessary array allocations and correcting hit test logic to improve the library's performance and functionality.
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