Justin Geeslin
Research Assistant at FedEx
Minneapolis, Minnesota, United States
Summary
👤
Senior🎓
Top SchoolJustin Geeslin is a research-minded software engineer and human factors specialist with a decade of experience building reusable, test-driven web components and product-facing designs. He blends front-end engineering, interaction design, and product ownership at FedEx with academic research in wearable technology at the University of Minnesota, currently pursuing a PhD in Human Factors and Ergonomics. Justin’s disciplined TDD approach has halved feature delivery time while eliminating whole classes of defects, and he pairs that rigor with qualitative user research to drive humane, low-interaction-cost interfaces. He has a history of launching production systems quickly using open-source stacks (notably Drupal) and automating continuous deployment pipelines. Based in Minneapolis, he uniquely bridges sensor-driven logistics, UX research, and software delivery—bringing empirical human-centered insight to practical, scalable web solutions.
10 years of coding experience
12 years of employment as a software developer
Doctor of Philosophy - PhD Human Factors and Ergonomics, Doctor of Philosophy - PhD Human Factors and Ergonomics at University of MinnesotaBachelor of Science (BS) Computer Science, Bachelor of Science (BS) Computer Science at Mississippi State University
Stackoverflow
3,371reputation
606kreached
11answers
0questions
css
top-5%
java
top-5%
cross-browser
top-5%
compilation
top-1%
Github Skills (100)
mockups10
javascript-game-engine10
javascript10
gltf10
javascript-game10
science10
julia10
webgl10
makehuman10
typescript10
nodejs10
compilation10
cocos-creator10
playcanvas10
game-engine9
Programming languages (11)
Github contributions (5)
CogTool-Modern/cogtool
May 2020 - May 2022
Predictive human performance modeling for UI/UX design
Contributions:4 releases, 177 commits, 34 PRs in 2 years
performance-modelingux-uipredictiveperformanceui-ux-design
justingeeslin/sensibleui
Feb 2016 - Apr 2019
UI components. Reusable, extendable, declarative.
Contributions:1 release, 3 PRs, 74 pushes in 3 years 3 months
reactdeclarativereusable-componentsextendableui-components
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