At TU Wien:

In general, I am not looking to take in additional students or postdocs at TU Wien. That being said, do get in touch (well in advance) if you think your case is exceptional.
 

You might consider applying for a PhD or postdoc position with UnAxiMa if there is an open call. Please direct informal enquiries about UnAxiMa to the official email address.
 
At the University of Gothenburg:

 
I am happy to supervise Master's theses at the University of Gothenburg.
 

Elsewhere:
 

I am happy to co-supervise external Master's or PhD theses.