Most people speak English, including bus drivers and anyone else you'll meet. I think the consensus is that swedes probably have the best English of all who don't have it as their first language.
So it isn't just realistic, it's simple. Language-wise you may find it easier than parts of the UK (I'm not even joking).
In the tech sector as well as all larger/multinational corporations English will be the primary language used.
In fact, people who come to learn Swedish are routinely disappointed when they don't get a chance to try it, as the swedes are so delighted to speak English.
So it isn't just realistic, it's simple. Language-wise you may find it easier than parts of the UK (I'm not even joking).
In the tech sector as well as all larger/multinational corporations English will be the primary language used.
In fact, people who come to learn Swedish are routinely disappointed when they don't get a chance to try it, as the swedes are so delighted to speak English.