A company informed me to go to work, saying that after three months of internship, the internship salary was 2500. During the internship, rotation is implemented, and the salary depends on the assessment results. The answer is as follows:

1-but I didn't have a diploma at that time. Is it easy to change jobs?

You can't sign a labor contract without a diploma, you can only sign a tripartite agreement, so the company can't actually transfer it to you then.

2-Besides, if I'm going to practice, do I need to sign any agreement or something?

It's good for you to sign, but it's not illegal for the company not to sign. Just a phone call.

3- What should be the salary after becoming a full member?

There is no way to measure this.

4- How do you suggest asking for a raise after work?

When signing a tripartite agreement, talk about wages. If the other party can't give you the expected salary, then don't sign the tripartite agreement and leave directly.