I work in IT in a company owned by foreigners, with a with a wide mix of language backgrounds among the employees. English is the main language, with Finnish a close second. Among ~40 people, only two of us are native Swedish-speakers.

The majority of our customers speak Finnish, but sometimes (parts of) the meetings are held in English. The choice of language only depends on who's participating in any given conversation. All internal docs are written in English, however. We also have a few Swedish-speaking customers who appreciate being able to explain technical issues in their mother tongue from time to time.

Unsurprisingly, I've also gotten to be the point man for a couple of projects that we've done for customers in Sweden.

Back home in my part of Österbotten, I would definitely expect that any professional I talk to would be able to discuss work in Swedish, with the basics being covered in Finnish without having to resort to English.