It pays to switch jobs. If nothing else each new employer will do their best to justify the decision to offer a significant increase. They know what they have i

It pays to switch jobs. If nothing else each new employer will do their best to justify the decision to offer a significant increase. They know what they have in hand. You just need to be perceived as having more potential than that. Also keep in mind, pay is often a function of having management potential. If you're getting more for similar work it could be because they see you as having greater long term potential, or have other things to contribute sooner. There's more to advancing in tech than tech-centric skills.