Operation tasks about 70%
AWS infrastructure and scaling out the service
http://www.slideshare.net/ramen74/gengo-aws
Server provisioning and deployment using chef
http://www.slideshare.net/Gengo/devops-days-26676028
Postgresql improvement
http://www.sraoss.co.jp/case_study/gengo_en.php
https://www.pgecons.org/wp-content/uploads/2014/09/2014_09_17_gengo_postgres.pdf
Monitoring (Datadog, monit etc)
Development tasks about 30%
API development (Python, PHP, Go)
Refactoring, Toward from monolithic application to microservices architecture