Please read what I wrote two posts above.

University FAO staff don't like to work during the summer break, but often times they must have one staff member processing new residency permits during July and early August.

Additionally, YOU must show flexibility to travel to the new employers local Immigration Police dept prior to the end of your current contract to have your new residency permit processed. This will involve holding your passport for a couple of weeks which can them be sent back to you.

FTs should always be aware of the END DATE of their residency permit and contracts. Do your best to convince the FAO department to date the residency permit as late as possible the following year in case you do decide to change employers.

If your relationship with your current employer is good, have the new employer's FAO department speak directly to them. They often show each other professional courtesy.