since 2008 , days of ruby 1.8.3/rails1.8.6, started using RoR.
2013/01 ~ current: Works as a Ruby / Rails programmer
*Engaged in various computer system construction/enhancement those were build on Ruby/Rails basis,
2 Nation-wide systems, 2 aggregation websites, 1 system for local Gov't, 1 advertisement system, 1system for sales-establishment, 1 system regarding real-estate, 1 system for staffing company, 1 system regarding Mobile Device Management ( 'MDM').
1 system regarding electronic-book retailer
*Also experienced Project-management, system design (5 years) customer support, and server engineer. Almost 20 years long. Also having understands Jquery/JS, Perl, Classic-VB, and basic C language.