And held study sessions of Kotlin and Mathematics several times.
As for infrastructure, I managed all of servers used in the company, such as web server, mail server, load balancer, database server and so on.
Created the business system and the social system with Ruby on Rails, PostgreSQL and MySQL. Ruby on Rails, PostgreSQL, MySQL を使用して 基幹システム及びSNS作成を行った。
Created web server on AWS EC2 with Apache, Nginx, Unicorn and Passenger. AWS EC2 上 で Apache, Nginx, Unicorn, Passenger を用いてウェブサーバの構築を行った。 Establish LDAP server, Mail server and GitLab server. LDAP サーバ、 メールサーバ、 GitLab サーバ の構築も行った。
Created business systems and the framework which is used in Nisseicom. 基幹システムの構築や、社内で使用するフレームワークの作成を行った。
Technologies I used are Visual Basic .Net, VBA, ASP .NET, Visual C#, JScript, VBScript, Oracle Database, SQLServer and its reporting service, Crystal Report, Microsoft Access and so on. I also used machine specific language that was used in HT-3000W, which is handy terminal made by Keyence.