By the way I've uploaded a new version one day ago, there was a problem with some skill cost that crashes the game, I've fixed it.
By the way choosing a new job starts you in level 1, but your previous Job progress levels are stays the same. So you had to grind new jobs too if you want, also you'll learn their passives too! You can be a Sword and Shield bearer Duran if you want, lol.
Have fun!