Ryan Elandt
Senior Geometry Engineer at Roblox
California, United States
Summary
👤
Senior🎓
Top SchoolRyan Elandt is a Senior Geometry Engineer with 8 years of experience building robust, modular C++ systems for robotics, simulation, and autonomous vehicles. He has a strong track record of turning complex mathematical models into production-quality software—from inventing a soft contact model now included in Drake to leading dynamics-based vehicle simulation and time-keeping improvements for autonomy stacks. A primary author of the type promotion system in Boost.Math, he combines deep numerical and geometric expertise with rigorous engineering practices, including unit testing and code review in large C++ codebases. Based in California and holding a PhD in Mechanical Engineering from Cornell, Ryan mentors engineers and bridges research and production to deliver reliable, high-performance tooling for control and planning. Notably, his work often unlocks capabilities previously considered impractical, such as robust triangular-mesh contact forces and hydraulics-capable vehicle dynamics.
8 years of coding experience
4 years of employment as a software developer
University of California, BerkeleyDoctor of Philosophy - PhD Mechanical Engineering, Doctor of Philosophy - PhD Mechanical Engineering at Cornell University
Github Skills (69)
fixed-point10
boost10
histogram10
quaternions10
deterministic10
euler-angles10
multiprecision10
robotics9
slice9
julia9
bounding9
rotation9
dynamics9
verification9
mathematics9
Programming languages (4)
Github contributions (5)
ryanelandt/Rotations.jl
Jun 2019 - Nov 2021
Julia implementations for different rotation parameterisations
Contributions:2 PRs, 6 pushes, 1 branch in 2 years 5 months
implementationsrotationjulia
ryanelandt/Binary_BB_Trees.jl
Sep 2018 - May 2019
Bounding Box Intersection Tests
Contributions:109 commits, 4 PRs, 121 pushes in 7 months
boundingintersection-testsboxbounding-box
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