Pros
Hires brilliant engineers and you get to work on interesting space technology. Good coffee onsite and a really good group of people to work alongside of. Exposure to complex and cool engineering.
Cons
Extremely long hours, then when you are wrecked something will go wrong and you will be there even later. If you are in in certain roles expect to work at 2am as an engineer if things are behind schedule. Engineers are often made acceptance technicians despite being far more qualified. There is no real talent management, no performance reviews, no goal setting, no internal applications for jobs to move around. Most managers started as graduates at rocket lab and really just adopt the rocket lab way rather than having any formal leadership skills or experienced organisational managerial skills.