He has been a research fellow of the JSPS (PD) from July 2009 to March 2010. From April 2010 to March 2011, he was a postdoctoral fellow at Queen’s University in Canada. His research interests include empirical software engineering,​ open source software engineering and mining software repositories (MSR). His work in international research collaboration has been published at premier venues like ICSE, FSE, ESEM, MSR and ICSM, as well as in major journals like TSE, EMSE and IST. He received the B.E. degree (2005) in Informatics from Kansai University, and the M.E. degree (2007) and Ph.D. degree (2009) in Information Science from Nara Institute of Science and Technology. ​ + \\