Sébastien Crozet
Directeur-fondateur
Maulette, Île-de-France, France
Summary
🤩
Rockstar🎓
Top SchoolSébastien Crozet is a founder and CTO with 13 years of experience specializing in physics engines, collision detection and high-performance Rust systems. He leads Dimforge and serves as CTO at Foresight Spatial Labs, combining product leadership with deep hands-on R&D. His background includes a PhD-level thesis and research at CEA on efficient contact determination for B‑Rep solids, informing his pragmatic contributions to open-source physics libraries like rapier, parry and nalgebra. A prolific backend developer, he has fixed low-level memory and constraint-resolution bugs, refactored collision algorithms for edge cases, and modernized GLFW Rust bindings for current compilers. Based in Île‑de‑France, he blends academic rigor with startup execution and a taste for improving code clarity and maintainability across complex geometric and physics codebases. Notably, his work often focuses on subtle correctness and performance corners that silently improve robustness in real-time simulations.
14 years of coding experience
EPITA: Ecole d'Ingénieurs en InformatiqueProgramme d’échange à l’international entre l’Université de Stafford et l’Épita., Programme d’échange à l’international entre l’Université de Stafford et l’Épita. at University of Staffordshire
Stackoverflow
46reputation
462reached
1answer
1question
Github Skills (37)
simulation10
physics-engine10
code-optimization10
algorithms10
c-language10
matrix10
geometry10
game-engine10
simulator10
physx10
api-design10
game-dev10
glfw10
simulations10
collision-detection10
Programming languages (12)
Github contributions (5)
dimforge/nalgebra
May 2013 - Jan 2023
Linear algebra library for Rust.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:57 reviews, 1522 commits, 681 PRs in 9 years 9 months
Contributions summary:Sébastien appears to be a back-end developer contributing to the nalgebra library for Rust. The commits involve fixing benchmarks, implementing new traits for assignment operations, and implementing outer product functionality. The work focuses on improving the library's core functionality and mathematical operations.
linear-algebrarustmatrixvectoralgebra
dimforge/parry
Dec 2020 - Jan 2023
2D and 3D collision-detection library for Rust.
Role in this project:Back-end Developer
Back-end DeveloperContributions:76 reviews, 297 commits, 223 PRs in 2 years 1 month
Contributions summary:Sébastien primarily focused on implementing and refactoring the collision detection algorithms. Their contributions involved modifying the source code of the `parry` library to use only one type of polygonal feature and fixing a corner-case that led to invalid contacts. They also incorporated the use of `Isometry::inv_mul` in multiple tests, demonstrating a focus on performance improvements. Furthermore, they added support for convex polygons, convex polyhedrons, and a series of other geometric shapes.
3dcollision-detectionrustrust-langgamedev
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