I'm a hiring manager. We don't pay based on value, we pay based on competition for the hire. If the software doesn't require a lot of ongoing maintenance (it

I'm a hiring manager. We don't pay based on value, we pay based on competition for the hire. If the software doesn't require a lot of ongoing maintenance (it may! I have no idea!) and this business is already set up to handle remote asynchronous work, you may not have a strong negotiating position. Or you may -- perhaps it requires highly specialized skills. But you should make a non-emotional evaluation of (1) your replaceability, and (2) your business partner's opinion of your replaceability. If you want pay based on value, start a company you own.