Tatsuya Oiwa @tatsuyaoiw


Tatsuya Oiwa is a software engineer with 7+ years hands-on experience in server-side, large-scale, distributed systems design and development. His specialities include microservices, RESTful services, domain-driven design, retail and e-commerce, information retrieval, etc.

Programming language

  • Proficient: Java 8 (Jetty, Jersey, Jackson, Guice, Guava, MyBatis, Lombok)
  • Intermediate: JavaScript (Node.js, Express, Mocha)
  • Beginner: Ruby
  • Beginner: 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.


My resume is on Github - tatsuyaoiw/resume.