(Unix scripting) Bash / zsh
As a developer I know how to work with operating systems. I can make an installation of any kind, script the installation which will help you gain some more time for real jobs. For example, do you have a lot of services that you have to check every morning and write a report, or restart your server every morning or add an event to your calendar? I can script that for you. This kind of development is cheap and very fast.