Yoichi Kayama
ITエンジニア at self-employed engineer
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolYoichi Kayama is an experienced GIS and web mapping engineer with 13 years (and decades of related experience) developing open-source geospatial solutions from Tokyo. He has deep expertise in FOSS4G, contributing technical documentation to the prominent QGIS project and improving user-facing manuals for features like Print Composer, GRASS integration, and heatmap plugins. A long-time Open Source Geospatial Foundation charter member and former board member of OSGeo.JP, he blends research-grade GIS knowledge with practical software development and field-tested delivery for government and industry clients. After senior research and fellow roles at Aero Asahi, he now works as a self-employed engineer, focusing on web mapping and open-source toolchains. Known for clear technical writing as much as coding, he helps bridge complex GIS functionality and usable documentation for wider adoption.
13 years of coding experience
24 years of employment as a software developer
University of Tsukuba
Github Skills (4)
qgis10
rs10
user-manual10
documentation10
Programming languages (7)
Github contributions (5)
qgis/QGIS-Documentation
Jan 2013 - Sep 2013
QGIS Documentation
Role in this project:
Technical Writer
Technical WriterContributions:108 commits in 8 months
Contributions summary:Yoichi's contributions primarily involve modifications to the QGIS documentation, specifically within the user manual section. These changes include updates and corrections to existing documentation related to various aspects of the software, such as the Print Composer, GRASS integration, and heatmap plugins. The commits demonstrate an effort to improve the clarity, accuracy, and completeness of the documentation, enhancing the usability of the QGIS software for its users.
pythonqgisrst
OSGeo-jp/gdal
Jul 2024 - Mar 2025
GDAL is an open source MIT licensed translator library for raster and vector geospatial data formats.
Contributions:3 PRs, 109 pushes, 1 branch in 8 months
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