Jeff Preshing
Game Developer at Arc80 Software Inc.
Montreal, Quebec, Canada
Summary
🤩
Rockstar🎓
Top SchoolJeff Preshing is a seasoned game developer and systems programmer with 14+ years building high-performance engines and shipping cross-platform titles from consoles to mobile. He combines deep low-level expertise in C/C++/C# and lock-free concurrent algorithms with practical experience across CPU/GPU optimization, networking, and platform certification—work that included a novel hair algorithm for Child of Light and 60 fps optimization across six platforms. As a technical architect at Ubisoft he led teams, gave CppCon and industry talks, and continues to iterate on core infrastructure through open-source concurrent data structures (notably contributions to libcuckoo in his junction repo). Now leading a custom C++ engine and end-to-end game production at Arc80 in Montreal, he’s equally comfortable coaching teams, diving into thorny bugs, or crafting 3D assets and audio when projects demand it.
14 years of coding experience
18 years of employment as a software developer
Bachelor of Mathematics, Computer Science, Bachelor of Mathematics, Computer Science at University of Waterloo
Stackoverflow
151reputation
226kreached
2answers
0questions
Github Skills (18)
algorithms10
c-language10
concurrent10
data-structure10
hashtable10
data-structures10
cprogramming-language10
concurrent-map10
concurrency10
testing9
cmake9
memory-management9
performance-optimization9
embedded6
sorting6
Programming languages (3)
Github contributions (5)
preshing/junction
Feb 2016 - Feb 2018
Concurrent data structures in C++
Role in this project:
Back-end Developer
Back-end DeveloperContributions:40 commits, 3 PRs, 38 pushes in 2 years
Contributions summary:Jeff primarily contributed to the concurrent data structures implemented in C++. Their work included adding a new concurrent hash map implementation (libcuckoo), refactoring and simplifying build scripts, and improving the performance of existing data structures like ConcurrentMap_Linear. Significant effort was spent on fixing bugs related to memory management and improving scalability through algorithmic optimizations. The user also added tests to validate the correctness and performance of the data structures.
data-structurescppconcurrent-data-structuresconcurrent
mintomic/mintomic
May 2013 - Sep 2016
Contributions:29 commits, 6 PRs, 14 pushes in 3 years 4 months
turfatomics
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