An alternative scalable way is to switch from a full time job to becoming a freelancer/consultant and set your own rates.
In order to be able to land high paying projects as a consultant, you would need to showcase your skills somehow (open source, portfolio, etc...). This can happen later on though and as a start the easiest way would be to ask for referrals and make it known to your network that you're looking for consulting opportunities.
Making this transition though would imply that you'll need to think about it as a business instead of a job, and start cultivating new skills i.e. communication, marketing, sales, etc...
In order to be able to land high paying projects as a consultant, you would need to showcase your skills somehow (open source, portfolio, etc...). This can happen later on though and as a start the easiest way would be to ask for referrals and make it known to your network that you're looking for consulting opportunities.
Making this transition though would imply that you'll need to think about it as a business instead of a job, and start cultivating new skills i.e. communication, marketing, sales, etc...