I can’t speak for the Canaries or Cyprus, but in Malta 
it’s heavily dominated by the e-gaming industry. It seems that most expats you meet work in either e-gaming 
, aviation 
or financial services 
.
While e-gaming or banking might not be the tech industries that get you most excited, at least Malta has a highly developed tech scene given it’s tiny size. But it’s definitely no SF, Berlin or London.