More specifically, when they make you an offer for $x/year, you say "how about $(x + 15)" instead of "holy crap yes yes yes!"
You can also try it at your current job if you've been there a while and haven't seen more than "cost of living" adjustments in your salary for a while. Though the sad reality is that it's usually a lot easier to ask another company instead and get your raises by switching jobs.
More specifically, when they make you an offer for $x/year, you say "how about $(x + 15)" instead of "holy crap yes yes yes!"
You can also try it at your current job if you've been there a while and haven't seen more than "cost of living" adjustments in your salary for a while. Though the sad reality is that it's usually a lot easier to ask another company instead and get your raises by switching jobs.