Some here are against bonds for type-ratings. However, there is a big warning: if you don't want bonds for type-ratings or try to find ways of jumping out of them then employers will insist that you arrive fully type-rated at your own expense before being considered for a job. If an employer is making you more employable by paying a lot of money for your type-rating, then it is quite reasonable for them to want some protection from you jumping ship and using that type-rating. that they spent money on, elsewhere.
However, read all the details of that bond very, very carefully before signing. The first two that I signed were very reasonable, but subsequent bonds less so and I almost breathed a sigh of relief once I had come to the full term of the bond because of some of the 'more questionable' aspects of them.
A friend who had sons in a completely different industry summed things up beautifully once: in their industry people were stopped from leaving by being weighed down by more gold bars in their pockets; pilots are stopped from leaving by having lead bars, called 'bonds', in their pockets.