While it’s important to know a specific language - as someone who hires programmers, the more important skill is the ability to solve actual business problems.
Will you be able to learn about my business?
Can you incorporate something interesting that you learned, to make my API more responsive?
Many new programmers out of school focus on algorithms and mastery of the language - when the real skill is understanding what a problem is and how to bring the skills you have - to solving it.
Sure, get good at coding, but anyone can get good at the mechanics of the language in a really short time. Instead get good at solving problems and then you can name your price anytime.