Yuji Koyama
COLAS JAPAN K.K. Chief Operating Officer & Deputy Representative Director
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolYuji Koyama is a bicultural Japanese-French technology executive and research-minded engineer with 12 years of experience specializing in telecom, geolocation, and intelligent transportation systems. Currently COO and Deputy Representative Director at COLAS Japan, he combines hands-on technical expertise—from mobile protocol testing and field trials to big data geolocation systems—with strategic business development and cross-cultural team leadership. His background spans operator-side roles at Orange and SFR, defense project coordination, and early mobile platform engineering at NEC, giving him rare end-to-end visibility from product validation to commercial launch. Trilingual in Japanese, French and English, he excels at harmonizing multinational teams and regulatory-driven projects such as lawful interception and 5G readiness. An active practitioner of practical automation and scripting, he also contributes open-source Blender Python tooling for rendering workflows, reflecting a creative, code-first approach to problem solving.
12 years of coding experience
8 years of employment as a software developer
Lycee Franco-Japonais de TokyoUniversity of MontpellierMaster of Science, Master of Science at Robotics University of Science of Montpellier
·Orsys
Github Skills (9)
blender10
python10
render10
rendering10
animation9
command-line-interface9
compositing9
api4
apidoc4
Programming languages (9)
Github contributions (5)
yuki-koyama/blender-cli-rendering
Nov 2018 - May 2022
Blender Python scripts for rendering images directly from command-line interface
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:343 commits, 27 PRs, 177 pushes in 3 years 6 months
Contributions summary:Yuji primarily contributed to the development of a command-line interface (CLI) for Blender rendering. They created Python scripts to render images and experimented with different features like using the Cycles render engine, camera settings, depth of field, and procedural texturing. Furthermore, they focused on creating and styling the composition of the rendered images and setting up an animation workflow. The user displayed strong Python and Blender scripting skills.
cyclesblenderpythonblender-pythoncommand-line-interface
yuki-koyama/mathtoolbox
Apr 2018 - Apr 2022
Mathematical tools (interpolation, dimensionality reduction, optimization, etc.) written in C++11 with Eigen
Contributions:3 releases, 640 commits, 45 PRs in 4 years
eigenvaluescppdimensionalitydimensionality-reductioneigen
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