From my experience most of the companies scouting for developers are trying to minimize costs and using the “fully remote” positions as a mean.
I almost never faced an HR ready to discuss salaries higher, than my current “above average” full-time salary in my region (~120-180k).
I wonder what should your CV look like and how should you approach the search for companies that can afford expensive developers no matter the geo.
If the goal is not worth the effort in the first place — what alternative scalable ways to increase senior programmer’s income can you recommend?
Scalable means more or less reproducible in finite timeframe without high risks like in “starting your own startup”.
Professionally there is nothing special about me except that I really enjoy working, but for the last two remote jobs, the offer letter I received was more than what I verbally agreed on with HR. Since I am also 70 years old, I take this as good evidence of how pro-worker the job market is right now.
I offer free mentoring (see my web site) and always talk about the importance to having a beginner’s/learner’s mind. I think that what companies want is: prioritizing the company’s interests, being flexible, and being observant looking for opportunities to improve the business. Fairly straightforward strategy.
Good luck reaching your financial goals/salary number but also please remember money isn’t everything, and is much less important than our relationships with other people.