I started working for a company something around 1-2 months ago, they said because I don't have any experience with their stack, my salary will be lower than other team members. I said there is no problem and started my work. My first task was refactoring codes that their experienced programmers have wrote. My second task was extracting data layer from views. (They use Laravel and MVC architecture and they get data directly in views, not controllers). So, by end of the month when I talked with my boss I said I should get more money because I was better than your experienced programmers. He refused my request so I said I will not work with your team anymore :)
Anyway, never accept a job if you know you deserve more money than what they say will give you.

P.S: Sorry for my bad English. English is not my native language