Tomoyuki Sahara
Lead Engineer at Internet Initiative Japan
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolTomoyuki Sahara is a Lead Engineer based in Tokyo with 13 years of experience building reliable internet services at Internet Initiative Japan. He combines deep systems and back-end expertise with a strong academic foundation in information engineering from Ritsumeikan University and ongoing studies at The Open University of Japan. A hands-on maintainer in the mruby community, he has fixed critical core bugs and improved string handling and data packing features in the lightweight Ruby implementation. Known for pragmatic problem-solving, he focuses on robustness in compilation and low-level code generation where subtle issues can cause production faults. Colleagues rely on him to balance long-term system health with practical delivery, and his dual role as practitioner and learner keeps him attuned to both legacy infrastructure and emerging techniques.
13 years of coding experience
放送大学修士, 情報工学, 修士, 情報工学 at 立命館大学
Github Skills (9)
c1710
text-manipulation10
strings10
c1110
datastructures-algorithms8
algorithms8
data-structures8
algorithm8
data-structure8
Programming languages (11)
Github contributions (5)
mruby/mruby
Sep 2012 - Mar 2019
Lightweight Ruby
Role in this project:
Back-end Developer
Back-end DeveloperContributions:316 commits, 16 PRs, 2 pushes in 6 years 7 months
Contributions summary:Tomoyuki primarily contributed to the core functionality of the mruby project, fixing critical bugs and addressing issues related to code compilation and string handling. Their contributions involved addressing out-of-bound access errors in code generation, handling NUL characters within strings, and improving string manipulation functions. Additionally, the user implemented essential features, such as supporting "V" and "v" options, which are used in data packing/unpacking.
ruby
iij/iij.github.com
Dec 2012 - Mar 2013
Contributions:811 commits in 3 months
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