[vishnugupta]

Get a sense of salary ranges in your current company. Most of the managers, recruiters, HR/finance know ball-park figure if not an accurate one. You'll then be able to place yourself on that scale and in turn evaluate if its worth investing to grow within the org or look outside.

A well known heuristic (backed by some data) is that changing jobs once every ~2.5 years will maximize your life-time earning.

Also, ask yourself if you are aiming for local maxima or global maxima (i.e., with city/France/EU/Global??). Be flexible with relocation depending on the answer.