A doctoral degree will certainly only help you to become rich in an idealistic sense. The first contract for a PhD position should have a term of at least one year - after which, graduates are rewarded with their first salary increase.
You pull the strings and always have an overview: Project managing director are responsible for organising and coordinating projects – sometimes over several years. Not an easy task, but it is attractive due to the good salary prospects.
Universities and research institutions have strict requirements and high expectations for postdoc applications. How to make a good impression.