https://www.gulp.de/cgi-gulp/trendneu.exe/MONEYFORMDLL?txtPo...
https://www.gulp.de/knowledge-base/stundensaetze/und-er-stei...
Remember though, the cost of living (and taxes) is also much higher in these "rich" countries and more than often you'll need to learn the lingo. There are some exceptions to this. Munich, Luxembourg and Zurich for example have large multinationals where the lingua-franca inside the company is English. Berlin has loads of startups where lots of foreigners work. I know a few Brits and Ozzies working in Berlin who still can't speak any German after years of living there (I don't think that is a good thing btw).
I have no idea about Scandinavia, but nearly all people have some basic level of English and the younger generations are often fluent.
Where are you moving from, out of interest?
I'd dessuade you from living in the Northern Europe.
I lived in Denmark for a year and I'd not go to Scandinavia but for holidays ever again.
The taxes are so high it's almost not worthwhile to make any effort or try harder.
These countries have one of the smallest income gap between those who earn the least and the rich. On the top of that it's dark, cold, the language is difficult to pick up, stores close early on the week days and are closed on Sundays.
Read about "Law of Jante" on Wikipedia. http://en.wikipedia.org/wiki/Law_of_Jante
Everything is damn expensive. Owning a car is a luxury.
People are friendly, but that means just "helpful" kind of friendly, not necessarily friendly like in "warm, carring and thoughtful". At least that's my impression.
They drink a lot and drinking is a must if you want to socialise. The stereotype of drinking Russians should be superseded by the drinking Danish youth. Perfectly dreadful.
The original Legoland in Billund is closed in winter :(
And trains are often late.
However, the nature is fabulous, and the streets and houses are meticulously clean. And these countries were not destroyed during the great wars - the last time Copenhagen was besiged, bombarded and plundered was in the times of Napoleon in 1807 - unlike Berlin or Dresden. That gives the city a special ambience.
On the other hand in Provance it is warm most of the year and you can easily get to Rome or Paris, or pay Spain a visit. And it has Alps and Mediterranean and palm trees all no further than 70 km drive!
Depending on skill/education, entry-mid level software jobs usually pay about 25000-30000 SEK/month (~4000 USD), before taxes. Larger companies may have agreements with unions on salary levels based on level of education/years of experience.
30k provides a pretty good quality of life, expect to take home ~23k after tax, depending on where you live you might pay ~7k in rent for a 2 bedroom apartment and ~3k on food.
Everyone speaks decent to good English and getting a job shouldn't be too hard, provided you have experience. The tricky part is dealing with the world-class bureaucracy of Skatteverket, the Swedish tax agency. Even for me, as an EU citizen, it was quite the paperwork mission.