Sebastien L'heureux
LEAD SYSTEM DESIGNER at Ubisoft Montréal
Montreal, Quebec, Canada
Summary
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Rockstar🎓
Top SchoolSebastien L'heureux is a lead systems and game designer with seven years in senior roles and over a decade designing open-world gameplay, progression and combat systems for AAA titles. He has led and scaled design teams at major studios including Ubisoft Montréal, Eidos-Montréal and WB Games, shaping quest design, engagement loops and milestone-driven pipelines across projects like Far Cry and Gotham Knights. Known for translating high-level vision into concrete design pipelines, he establishes approval flows, sprint breakdowns and long-term player progression frameworks that keep large teams aligned. His background in psychology and level design gives him a player-centered approach to systems balance and narrative integration. Based in Montreal, he frequently acts as a project closer and cross-discipline bridge between design, narrative and level teams.
8 years of coding experience
19 years of employment as a software developer
DEC Social Sciences, DEC Social Sciences at Collège Edouard-MontpetitAEC Level Design, AEC Level Design at Ubisoft CampusPsychology and Archeology, Psychology and Archeology at McGill University
English, French
Github Skills (5)
unity-dots8
graphic5
render4
pipeline3
scriptable3
Programming languages (2)
Github contributions (3)
Unity-Technologies/DOTS-training-samples
Oct 2019 - Oct 2019
Samples designed as exercises to be ported from Unity GameObjects/MonoBehaviours to Unity DOTS.
Contributions:25 commits, 18 pushes, 1 branch in 4 days
unity-dots
Unity-Technologies/ScriptableRenderPipeline
Sep 2018 - Sep 2018
Scriptable Render Pipeline
Contributions:1 comment in 1 day
renderpipelinescriptable
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