When we were traveling around Scandinavia, on couple of occasions we stayed next to business centers on weekdays, once in Stockholm and once in Reykjavik. In the morning when I realized that there was a bunch of IT companies, while my wife was trying to arrange us some tourist stuff I was walking around and thinking if I should just go door to door and see if anyone has a job opening.
Typically countries and other states don't impress me that much when I travel as a tourist and I don't fall for "the food is so nice and people are so friendly" argument, but Iceland and Sweden, specifically Stockholm, really made an impression on me.
So yeah, Scandinavia, Northern Europe and maybe Canada? I have met a lot of Easter Europeans, Asians and some Americans there in seemingly all professions, not only specialized skills, so there must be some immigration pathways.