Besides your profile page UvA employees can setup a free format personal website on a UvA server, first login:

  ssh <UvANetID>@staff.science.uva.nl

then make a directory where your website is stored in:

  mkdir WWW
  cd WWW

create a test page:

  echo "this is a test" > index.html

which should then be available via url:

  https://staff.fnwi.uva.nl/<EmailName>

where <EmailName> is the name used in your @uva.nl email address. If things don’t work as described contact your ict-contact-person as possibly some permissions need to be set. Your ict-contact-person can get this sorted by emailing to servicedesk-icts@uva.nl.

Optionally you can use WordPress to create your personal website.