Joseph Percival
Postdoctoral Researcher at Penetrator
Hilo, Hawaii, United States
Summary
🤩
Rockstar🎓
Top SchoolJoseph Percival is a postdoctoral researcher and software engineer with nine years of experience blending remote sensing, ecology, and GIScience into practical tools for environmental analysis. Based in Hilo, Hawaii, he applies geographically weighted modeling and satellite image classification techniques developed during his graduate work at Kyoto University to real-world conservation and land-management problems. He has a strong teaching and support background—from leading a 40-person tech help desk to serving as a graduate teaching assistant—bringing clear communication and mentorship to technical projects. As a software engineer and consultant at Penetrator and formerly at Georepublic Japan, he bridges research-grade analytics with production software practices using Python and R. His interdisciplinary training (BA with honors in Physics, Economics and Environmental Studies; advanced studies at Kyoto and coursework in Pacific archaeology) gives him an unusual ability to link ecological questions to spatial-data solutions. He is quietly prolific in developing R functions and geospatial workflows that make satellite-derived insights more reproducible and accessible.
9 years of coding experience
10 years of employment as a software developer
Coursework in Pacific archaeology and history, Coursework in Pacific archaeology and history at National University of SamoaMaster's in Environmental Management, (Focus in Spatial Analysis, Remote Sensing, Ecology), Master's in Environmental Management, (Focus in Spatial Analysis, Remote Sensing, Ecology) at Kyoto UniversityBachelor of Arts (B.A.), cum laude, Physics, Economics, and Environmental Studies (Highest Honors), Bachelor of Arts (B.A.), cum laude, Physics, Economics, and Environmental Studies (Highest Honors) at Brandeis University
Japanese, samoan
Github Skills (85)
network-analysis10
weighted10
postgresql-extension10
h310
osgeo10
astar10
postgis10
map-matching10
lidar10
spatial-analysis10
pgrouting10
duplicate-detection9
espn9
ecology9
correlation9
Programming languages (12)
Github contributions (5)
naru-T/gwpcormapper
Sep 2019 - Mar 2021
Contributions:1 release, 26 PRs, 58 pushes in 1 year 5 months
iosefa/PyForestScan
Jul 2023 - Apr 2025
A python package for calculating forest structural metrics from airborne point clouds.
Contributions:8 releases, 29 PRs, 96 pushes in 1 year 8 months
ecologyforest-structurelidarpoint-cloud
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