Total lack of transparency and fairness in the selection process. Some have to go through years of selections done by EPSO and others get in with only an interview for "temporary" positions. Also they prefer to hire auditors with degree in history and no previous experience in audit, a bit funny since you can't legally practice as an auditor with this kind of degree in several EU countries and you'd be ineligible for audit competitions organized by epso. They have a weird conception of equal opportunities in the institutions. It means that I will redirect my job preferences to fairer organizations.