Yukihiro Matsumoto
Matsumoto giving the keynote speech at EuRuKo 2011 Matsumoto accepting an award from the Free Software Foundation in 2012 Yukihiro Matsumoto (松本行弘 (まつもとゆきひろ), Matsumoto Yukihiro?, a.k.a. Matz, born 14 April 1965) is a Japanese computer scientist and software programmer best known as the chief designer of the Ruby programming language and its reference implementation, Matz's Ruby Interpreter (MRI). His demeanor has brought about a motto in the Ruby community "Matz is nice and so we are nice," commonly abbreviated as MINASWAN. As of 2011 , Matsumoto is the Chief Architect of Ruby at Heroku, an online cloud platform-as-a-service in San Francisco. He is a fellow of Rakuten Institute of Technology, a research and development organisation in Rakuten Inc. He was appointed to the role of technical advisor for VASILY, Inc. starting in June 2014. Matsumoto's name can be written using kanji: 松本行弘, but is normally written using hiragana: まつもとゆきひろ.