Chikahiro Tokoro

Worked for 10+ projects with various startups * Built product from concept to deliver: Job search engine, SNS, Crowdsourcing platform, Ruby library * Upgraded Ruby/Ruby on Rails/MySQL, automated deployment, restructured infrastructure * Designed and developed single sign-on architecture for inter Rails applications * Consulted for technical issues

CrowdWorks provides one of the biggest crowdsourcing service in Japan, is listed on the Tokyo Stock Exchange, worked as freelance * Upgraded Ruby on Rails framework of main product * Automated provisioning process of production servers * Built error monitoring system and applied to development/deployment process * Developed, released and improved new product of C2C marketplace

ZIGExN provides vertical search engines, is listed on the Tokyo Stock Exchange * Developed and operated vertical search engines for used car listing, matrimonial agencies * Designed image resizing/caching engine for solving performance bottleneck

Woks Applications provides ERP system specialized for Japanese market, was listed on the Tokyo Stock Exchange * Developed ERP system

Drecom provided Blog system, is listed on the Tokyo Stock Exchange * Developed new product of SNS by Ruby on Rails