Give a look to my resume for details.
I work as a professional sysadmin since 2017, but I am doing it for self-hosting many of my services since 2014. My experience is quite varied: I have worked for two differents B2B hosters, but also for a french online newspaper and now for a public hospital. Therefore I am able to adapt myself to the need of the users and constantly take care of it. I try to never forget that all my actions have consequences on users I hosted.