Atsushi Sakai
Principal at Komatsu Mining
Cupertino, California, United States
Summary
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Rockstar🎓
Top SchoolAtsushi Sakai is a principal robotics and autonomous navigation engineer with 12 years of experience developing autonomy for heavy machinery, currently leading a joint Komatsu Mining and Applied Intuition project in Cupertino. He blends applied research—Model Predictive Control and trajectory planning from a UC Berkeley visiting scholar stint—with hands-on productization of autonomous mining dump trucks. A committed open-source contributor, he maintains Japanese NumPy pages and contributes to PythonRobotics, SciPy, and notable projects in the Julia ecosystem, improving docs, robustness, and core functionality. His background in mechanical engineering (Meiji University, MEng) and work across control, signal processing, and back-end systems gives him a rare cross-domain fluency from low-level algorithms to production autonomy. An understated strength is his repeated role in clarifying complex APIs and documentation, making sophisticated numerical tools more accessible to practitioners.
12 years of coding experience
15 years of employment as a software developer
Master degree., Mechanical Engineering, GPA: 4.00, Master degree., Mechanical Engineering, GPA: 4.00 at Meiji UniversityBachelor's degree, Mechanichal Engineering, GPA: 3.40, Bachelor's degree, Mechanichal Engineering, GPA: 3.40 at 明治大学
Japanese, Chinese
Stackoverflow
946reputation
175kreached
10answers
20questions
Github Skills (31)
filterlist10
programming-language10
c-language10
python10
signal-processing10
matplotlib10
http10
data-structure10
filter10
data-structures10
filtering10
cprogramming-language10
documentation10
julia10
test-automation10
Programming languages (17)
Github contributions (5)
scipy/scipy
Dec 2019 - Jan 2023
SciPy library main repository
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:198 reviews, 230 commits, 198 PRs in 3 years 2 months
Contributions summary:Atsushi contributed to the `scipy/scipy` repository by adding input validation, which improved the robustness of the signal processing library. They also added and updated tests, specifically for the functions related to filter design and frequency response. Furthermore, they enhanced the documentation of various functions within the signal processing module, adding examples and addressing issues with the API.
scipypythonscientific-computing
JuliaWeb/HTTP.jl
Feb 2021 - Jan 2023
HTTP for Julia
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 reviews, 9 commits, 10 PRs in 1 year 10 months
Contributions summary:Atsushi primarily contributed to the `http.jl` library, focusing on improving its core functionality and maintainability. Their work included refactoring accessor methods, removing unnecessary exports, and adding the export of `statustext`. The user also addressed a bug in JSON detection and added example codes, enhancing the library's reliability and user experience. Furthermore, they implemented content auto-decoding for downloads, improving data handling.
julia
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