Christian Stocker has pointed out that Liip is hiring, including a position for a PHP/XSLT developer:

With our new office, we have more space, with more space, we can hire more people. Therefore and without further ado, I'll recommend you liip.ch/jobs, if you're looking for an interesting and fulfilling new job in an innovative and fascinating environment.

Details on the PHP position can be found here and info on the others are here: Java/Flash developer, Linux sysadmin and Clerk.