I started a job in a new field and country 2018 and was under the impression I got a fair salary. Quickly I realized I had more experience and more responsibility than colleagues with higher titles than me. I mentioned this to my manager, who agreed but said nothing could be done until my 1-year contract is transformed into a permanent contract.
1 year later I was promoted to a higher position but to my surprise, the salary only increased 3% and people with the same experience had ~15% higher salary. I mentioned this again to my manager who said he would review my salary. I had to wait several months for something to happen because a salary increase is only given once per year. My manager rewarded me 5%, which apparently is the maximum. Still, my salary is not in line with other colleagues. As I am also involved in hiring I know roughly what new joiners get.
I feel like I'm putting lots of energy just to get the average and I have to wait a whole year with unclarity.
I work for a big corporation with 10k+ employees and I know my manager needs to follow certain rules etc. But for me, it feels like I would get a higher salary just by leaving a reapplying for the same position.
How should I approach this?