(Optional but recommended) Establish a reputation in your field as someone who delivers measurable results vis-a-vis improving revenue or reducing costs.
Have a hiring manager talk with you, specifically, about an opening that they want you, specifically, to fill.
Talk informally (and then possibly formally) and come to the conclusion that this would be a great thing if both sides could come to a mutually fulfilling offer.
Let them take a stab at what that mutually fulfilling offer would look like.
Suggest ways that they could improve it such that the path is cleared for you doing that voodoo that you do so well to improve their revenue and/or reduce their costs.
(Optional) Give the guy hiring you a resume to send to HR, for their records.  Nobody will read it, because resumes are an institution created to mean that no one has to read resumes.  Since no one will read it, we put it in the process where it literally doesn’t matter whether it happens or not, because if you had your job offer contingent on a document that everyone knows no one reads, that would be pretty effing stupid now wouldn’t it.

I advise people to begin every negotiation by asking questions about the information they have at hand, such as:
What information is critical to this negotiation?
What parts of this information am I missing and how can I acquire them?
How confident am I of the information I do have, and how can I test and/or improve it?
What information do my counterparts have? How confident am I about my assessment of their information?
What information do I want to share with my counterparts? What is the best way to do so?
What information might my counterparts want to share with me? What misinformation might they want to share?

Let's take a common life decision, leaving one job for a new one. In our hypothetical case, Jane has a job she's happy with but after exploring the market she identified some other interesting opportunities. After pursuing them she's in final interviews with two other companies (we'll call them A and B) and is doing her homework to negotiate in the event any offers come through.

This is a true story about two acquaintances of mine. One knew instinctively exactly how to get ahead in the workplace. The other thought he knew--and was dead wrong. Most of us would probably behave pretty much the way the latter did. I believe their experiences hold lessons for all of us.