Site Upgrader(Laravel)

We need someone to upgrade our client's websites!. We need you to upgrade 3-5 websites per day. Each website took us like 05-20 minutes on average.

We will pay you per upgrade and if there is a problem with the upgrade you are required to fix it. Of course, it depends on how big the error is, who really cause it, etc.

We will screen developers, so expect short interviews but mostly theoretical questions.