If you are moving here, then I will have to say welcome to sweden!
The Swedish language is a bitch to learn, there is no grammar rules what so ever.
But you will get the hang of it. I promise!
A guy from New Zeeland learned Swedish in 6 months.
A guy in my class from Scotland has been here for 2 years and can speak decent swedish, although he never likes to speak swedish. My other friends loved to speak swedish so he learned swedish alot faster ofcourse.
Sweden is, as you might have noticed, a pretty good english speaking country so you, as you have also noticed, have no problem communicating with people.
I do not think it does effect you search for jobs, everyone understands english! it's not like you're french or something
Oh, this is Jeremy Clarkson trying to learn Swedish!
They are basicly screwing with him giving the hardest and most useless crap to say.
You will get the jokes ALOT better as soon as you learn swedish!
http://www.youtube.com/watch?v=66fULfwb2X4