Ochirkhuyag Lkhagva
Senior Backend Engingeer at Reallyenglish.com Limited
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolOchirkhuyag Lkhagva is a Senior Backend Engineer based in Tokyo with 17 years in IT and six years specializing in Ruby on Rails development. He combines hands-on backend engineering with two years of sysadmin experience using Chef, enabling him to bridge application development and infrastructure automation. At EdulinX and as an independent contractor for Reallyenglish.com he focuses on building reliable web applications and improving performance at scale. An active open-source contributor, he optimized the axlsx Ruby library by improving date handling, shared strings, and column width/styling performance—work that reflects attention to cross-platform edge cases. He holds a Master of Science in Wireless Communication from Waseda University and a bachelor’s in Applied Mathematics and Computer Science, bringing both rigorous academic training and practical systems experience to product-focused engineering.
17 years of coding experience
Bachelor, Applied Mathematics, Computer Science, Bachelor, Applied Mathematics, Computer Science at National University of MongoliaMaster of Science, Wireless Communication, Master of Science, Wireless Communication at 早稲田大学
English, Japanese, Mongolian, Russian
Github Skills (5)
code-optimization10
performance-optimization10
ruby10
data-structures8
data-structure8
Programming languages (3)
Github contributions (5)
randym/axlsx
Dec 2011 - Apr 2012
xlsx generation with charts, images, automated column width, customizable styles and full schema validation. Axlsx excels at helping you generate beautiful Office Open XML Spreadsheet documents without having to understand the entire ECMA specification. Check out the README for some examples of how easy it is. Best of all, you can validate your xlsx file before serialization so you know for sure that anything generated is going to load on your client's machine.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:18 commits in 3 months
Contributions summary:Ochirkhuyag primarily focused on optimizing the performance and functionality of the `axlsx` library. Their contributions include improving code efficiency by reducing unnecessary type detection and method calls. They also addressed issues related to date handling on different platforms and enhanced the library's ability to set fixed column widths and apply styles. Furthermore, they implemented shared string functionality for increased performance and consistency.
xlsxwidthbest-ofoffice-open-xmlvalidate
reallyenglish/docker-php-5.3-apache
May 2017 - Mar 2019
Contributions:8 commits, 6 pushes, 1 branch in 1 year 10 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.