Start by contributing in a Bitcoin-related open source project you are interested in. This can be made with a broad variety of skills besides dev - e.g. docs, design, testing, project management, concept, user research, etc.

You‘ll make contacts, get to know the field and see what kind of work is a good fit. If you stick around long enough, you will become knowledgable and build up a resume you can use to apply for jobs – if you don‘t fall in love with open source and lose yourself in it completely. 😉