I'm a system administrator, and I've generally found that local people seem to remember me fondly and offer me work - whether it is tuning nginx, setting up a small cluster, or similar.
Actually finding remote people to hire me for longer jobs is hard though, so unless I receive contact out of the blue I've more or less given up looking for it.
(I do keep pondering the value of being a "Remote Sysadmin", but I receive conflicting feedback: http://blog.steve.org.uk/it_is_unfortunate_that_many_compani... )