I work as an engineering manager and a kind of technical lead for a team responsible for site reliability engineering (SRE), data engineering, application development, etc. I’m mainly specialized in Rails, AWS, MySQL, Presto, Fluentd, Cassandra, and Kafka. I’m also the co-author of a Japanese book on the R language for advanced users (R言語上級ハンドブック), which was published in 2013.