Daisuke is a developer working for an IT education start-up in Japan. His main work is in Ruby On Rails but deals with various technologies through the couching he does.
He has also worked in the finance industry where he mainly used Java 6 and C# (.NET 3.5) with some Perl scripts here and there.
Outside of his daily job, Daisuke looks at random interest looking technologies like:
His favourite editor is Vim.