The subordinate enterprises of the aerospace industry are generally paid. If the task is tight, they often have to work overtime, and it is free. The old bureaucratic system of aerospace is still quite heavy, and paramilitary management has not changed much in the new century. To truly understand what is the aerospace spirit of "special efforts, special battles and selfless dedication" and whether it can be integrated into this aerospace enterprise culture is actually more important than what it pays. Otherwise, how can we talk about happiness if we are not satisfied with our work and earn a little money to support our families? Unless the salary is high enough to make up for the psychological balance.
As for the development space, one depends on who your boss is and the other depends on your own nature. If you are really talented and capable, there is still room for development. Otherwise, you have to work for your boss, and sometimes you will suffer some unfair grievances.