There are two ways you can take to increase your salary further:

• Specialist way: Specialize your knowledge to a more specific field or branch - for example developing software for purposes in the aeronautic field (just an example).
• Generalist way: Gain leadership qualities and become project manager or department/team leader.

Since I am not a professional for long time (I have no more experience than one year after graduation), I cannot give you more detailed information, but at least this is what I understood, the options you have when you want to get more money in software development.

1. Because experience is not everything. There are other factors which determine your "value" and salary, which you should not underestimate: Education, social skills, leadership skills, networking factors, (job) market situation, ... I am sure, somebody who is longer in professional life than me can add a lot of more factors.

2. There are two ways you can take to increase your salary further:

• Specialist way: Specialize your knowledge to a more specific field or branch - for example developing software for purposes in the aeronautic field (just an example).
• Generalist way: Gain leadership qualities and become project manager or department/team leader.

Since I am not a professional for long time (I have no more experience than one year after graduation), I cannot give you more detailed information, but at least this is what I understood, the options you have when you want to get more money in software development.