Yusuke Sangenya
サーバーエンジニア at DeNA
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolYusuke Sangenya is a server engineer with 12 years of experience building backend systems for smartphone games, currently working at DeNA in Chiyoda. He specializes in Ruby and Ruby on Rails, and contributes to open-source data tooling such as the SciRuby/daru project where he improved DataFrame and vector performance and correctness. With an academic background in electrical and electronic engineering from Kyoto University, he combines rigorous engineering fundamentals with practical production experience. Beyond game servers, his contributions show a knack for data manipulation and optimization that surfaces in both product-grade services and library development.
12 years of coding experience
学士, 電気電子工学, 学士, 電気電子工学 at 京都大学
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (8)
data-analysis10
vector10
ruby10
dataframes10
vector-math10
dataframe10
testing10
statistics9
Programming languages (13)
Github contributions (5)
SciRuby/daru
Nov 2016 - May 2017
Data Analysis in RUby
Role in this project:
Back-end Developer / Data Scientist
Back-end Developer / Data ScientistContributions:7 commits, 8 PRs, 15 comments in 6 months
Contributions summary:Yusuke primarily focused on enhancing the functionality of the `daru` Ruby gem, a data analysis library. They implemented features related to accessing DataFrame rows with integer indices and added tests for the same. The user also corrected behaviors within the Vector#reorder! method and optimized the DataFrame#covariance method, demonstrating a focus on data manipulation and performance improvements. Furthermore, they modified the DataFrame's vector handling and implemented DataFrame and vector comparison methods.
data-analysisdataframesrubydata-science
genya0407/sharecar-rails
Apr 2017 - Nov 2022
Contributions:546 commits, 179 PRs, 278 pushes in 5 years 8 months
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