tl;dr About my steps from ops to dev engineer. If you're an ops guy who want to be a developer, this will help you somehow. (日本語は下の方です) Details I worked as an ops guy for about four years since I had dropped out from a graduate school. In a last few years, I really felt that I would like to be a software engineer, but I had no chance in my company. So, I decided to prepare for the future chance to