Nathan Fenner
Software Engineer at Chalk
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolNathan Fenner is a software engineer with 12 years of experience building backend systems in the San Francisco Bay Area, currently contributing at Chalk after a multi-year tenure at Square. He brings deep hands-on expertise in refactoring and performance optimization, demonstrated by contributions to a community-maintained roguelike where he improved monster AI, pathfinding, and rendering efficiency. Comfortable across large-scale product teams and game-focused codebases, Nathan excels at simplifying complex logic and centralizing critical systems for maintainability and speed. A University of Michigan computer science alumnus, he blends pragmatic engineering with a curiosity for systems-level improvements that yield measurable performance gains.
12 years of coding experience
6 years of employment as a software developer
Computer Science, Computer Science at University of Michigan College of Engineering
Github Skills (9)
c1710
game-development10
c1110
roguelike10
dijkstra9
data-structure9
struct9
structures9
data-structures9
Programming languages (11)
Github contributions (5)
tmewett/BrogueCE
May 2021 - Feb 2022
Brogue: Community Edition - a community-lead fork of the much-loved minimalist roguelike game
Role in this project:
Back-end Developer
Back-end DeveloperContributions:23 reviews, 9 commits, 49 PRs in 9 months
Contributions summary:Nathan primarily focused on refactoring and optimizing core gameplay logic related to monster behavior, pathfinding, and rendering in this roguelike game. They updated data structures and functions, such as creature lists and pathfinding algorithms. The user also improved rendering performance by centralizing screen update logic, and implemented changes related to character and display buffer modifications. These changes suggest efforts to improve game mechanics and efficiency.
roguelikebroguegamedungeon
Nathan-Fenner/bb-simple-n-gram-cps
Feb 2023 - Feb 2025
Contributions:2 releases, 3 pushes, 1 branch in 2 years
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