Yes, and no. It's interesting. There's a path you follow in the beginning, but once you finish all of that it's really up to you as to how to progress. There's not much of a career, there's just a lot of things to do. You can focus on street racing or rally, or buy the businesses and do their specific missions, do the weekly, monthly, and daily challenges....there's a lot.
The game is more of a casual racer, even compared to FM7. FH4 is just a really, really good casual racing game. Super chill, super good looking, super fun to play.