Re: Change of employment on L permit for non EU
As far as I know, you will have great difficulty in transferring employment with a Non-EU L permit.
How did you even manage to get a 'random' job offer whilst still tied? To me, that is a sign that the new prospective employer probably has no idea how restricted your permit is - do they realise they would have to go through the process of applying, exactly the same as if you were still living in your home country.
To go from a Non-EU L to a B your current employer has to apply again and go through the same process as they did initially when they got the L permit for you...if they get the hint you are thinking of going elsewhere, they may decide not to do this and send you packing... Your job will be re-advertised anyway as part of the L to B conversion, and if someone local fits their requirements, you may lose out.
The exception to this is if you are on a dependent spouse permit. But I assume not as non-eu spouses generally don't have work permission and can't change cantons to follow their own job search..