They got in touch with me again and said that the presentation I gave was good, but they want me to "make my presentation more beautiful". Is this normal for a junior position? It's starting to feel like they are just dangling a carrot in front of me for reasons that I don't understand. The only reason I can think of is if I am up against a few other candidates who also delivered good presentations, and it all comes down to who can make things prettier now...
That will probably happen a lot in the job...
I guess it could be in specific niches, but it is not common nor normal for most places.
Four interviews not including the phone interviews and they want a redo on one... this seems very excessive to me.
2-3h is time enough to find out if someone is competent enough.
I guess just determine how bad you want the job and then if you want it try to pretty it up. But if they come back wanting you to do even more than this, I'd probably look elsewhere. They're already not respecting your time.