Since there are currently zero votes I'll explain a bit more about the classes. These are the stereotypical RPG job classes, but with better names.
Thief - The thief starts with a pistol. The thief specializes in ranged combat, and has the ability to steal from people. Has more starting storage space, and money. And a point in anti-justice.
Brawler - Starts with bronze knuckles. He can punch, kick, and take a hit like a champion. He has more starting carrying capacity, average money, and a point in justice.
Dueler - Starts with all basic weapons. The dueler specialize in weapon combat, and can disarm opponents. The dueler has average everything, and a point in neutral.
Kinetic - The kinetic starts with no weapons. The kinetic specializes in semi-ranged combat, and has the most freedom in the use of powers. The kinetic starts with little storage space, average carrying capacity, and no points in any alignment.
You will eventually have an automatic class upgrade once you reach a certain proficiency in JUSTICE's class. Depending on what alignment you take each class will upgrade to a correspondingly better class.(brawler becomes avenger on anti-justice, champion on neutral, and guardian on the justice path)
Each class upgrades every ten levels.
As for profession it doesn't really matter what you pick. It just has to be something that only pays minimum wage.(for example, a convenience store bag boy meets this criteria)