Tatsuya Oiwa About Archive Feed Github Twitter


Tatsuya Oiwa is a software engineer with 7 years hands-on experience in server-side, large-scale, distributed systems development and operation. He is currently working at GILT Japan, one of the leading online fashion retailers based in Tokyo (originally from New York), as a backend services engineer. He mostly writes his code in Java, sometimes in JavaScript (Node.js), Ruby and Python. His current focus is on growing the business by providing better shopping experience as well as keeping the code base clean and maintainable. Before joining GILT, he had been working at Rakuten and there building in-house, scalable, self-service e-commerce search platform.

Programming language

  • Java 8 (Jersey, Jetty, Guice, Guava, Lombok, TestNG, Mockito)
  • JavaScript (Node.js, Express, Mocha)
  • Ruby
  • Python


  • Lucene/ElasticSearch/Solr
  • Nginx
  • Zookeeper
  • Cassandra
  • Redis
  • PostgreSQL

Deployment tool

  • Chef
  • Vagrant
  • Docker

Operating System

  • Linux (CentOS, Ubuntu)
  • macOS

Natural Language

  • Fluent in Japanese
  • Proficient in English (speaking, reading, writing), TOEIC: 900


You can also find me on Twitter, LinkedIn, or Github.