Kei Sawada

I am a software engineer, weekend contrabassist, and occasional public speaker.

I write English blog as well as Japanese blog once in a while.

I tweet from @remore and email from

Software Engineer

I'm currently a software engineering manager at Media Technology Lab. Aside from this, I do some hobby programming as well.

My most popular repository is Burn, which is a toolkit to create 8-bit flavored application. In 2014 Burn v0.2 release is announced on reddit and HackerNews, and it spread to every corner of the world almost overnight.

learnGitBranching-ja is another example, which is a translated version of learnGitBranching, an interactive git visualization to challenge and educate. A blog post of the release announcement have got popular.

Weekend Contrabassist

It has been more than 5 years already since I have started to play double bass, but I'm still struggling to learn the fundamentals. Suzuki double bass, Dörfler bow, Belcanto strings and Pop's rosin are my favorite.

Public Speaker

I give talks very occasionally. Most of them are about technical theme like below:

30min talk at RubyKaigi2014

30min talk at PHPConferenceJapan2011

30 min talk at TDD BootCamp Tokyo 1.5