This is exactly my experience (jumping ship and changing titles). I didn't see much discussion in the article about "what do I need to do to get to the next le

This is exactly my experience (jumping ship and changing titles). I didn't see much discussion in the article about "what do I need to do to get to the next level" as a point of discussion when asking for more money. This is an easier discussion for your manager in many cases, and in theory at least should come with an increase when it happens. For many larger companies, in the long run the key to increasing your salary is getting promoted a lot. The other factor to consider is how is the company doing. Are they doing well financially and expanding their business, starting new projects? Or are they cutting corners on expenses? If they are cutting corners on expenses, not replacing people who leave, etc, you really are probably better off looking somewhere else in many cases than trying to negotiate a higher salary.