Employing someone who does not have the right papers is not recommended. Yes, widely, with differing access methods. I find cable access to be by far the most reliable and robust. Dialup, ISDN, and ADSL are also available. This depends on language skills, work permits, and your skills.
Some jobs are limited to long-term permits or Swiss citizens only.
Excellent, no waiting, friendly staff, and a reasonable level of English spoken by most doctors. Good, many private kennels. Talk to the local vet, contact the SVPA for information. Not too hot, not too cold. Yes, but it's not an inexpensive place to live.