I find it hard to believe he will date you again once he gets a proper job. When will he get the proper job? Will you wait for three years so that he begins dating you again? That's being undervalued and degraded.
I believe the constant argument was about his being busy at work leaving little room for love to blossom.
I can't tell you, "When I get a good job, I will date you again." It's an insult. Move on. Forget about him. Don't contact him.
You may send him a final text. Let him know you appreciate the time you spent together, and if it's true what he said, time will tell.
If he ever contacts you in the future, examine him carefully so that you don't end in the same pit again.