Hi there,
I hope you're doing great. Okay, so I understand that you're in search for a Unity expert who's able to add Linux functionality which will allow to select a target window agnostic of desktop environment for piping into the OpenVR. I am delighted to inform you that I can certainly work on this project and make it a success for you.
I have been involved in development field for the last 8 years and have worked on many successful projects. Other than adding Linux functionality, what else are you looking for?
I am looking forward to your positive response.
Sincerely,
Talha