A common red flag for me is: saying you're an 'expert', '10/10', etc in like 5 different technologies. For juniors it's common to overestimate their capabilitie

A common red flag for me is: saying you're an 'expert', '10/10', etc in like 5 different technologies. For juniors it's common to overestimate their capabilities, which is okay, but engineers with some years' experience that already claim to have mastered it all: i'll pass on that.