Dear Sir,
I am a Linux and Free BSD Server Admin and I have been administering Live Servers with very sensitive Governtment files.
I am a freelancer and I have been helped by 2 other Sys Admins so we work in shifts and maintain the servers for 24 hours, if you can contact me I will allow you to ssh into one of my server, so you can check the health of the server I am maintaining and I can give you references too.
I am willing to work on an hourly cost or a monthly salary which will workout very cost effective for you.
Rgds
Ram