I'm a software developer with expertise in a highly specialized technical niche. By my estimation, only about 10,000-50,000 professionals worldwide possess comparable skills in this domain. While this specialization has served me well professionally, I'm concerned about several aspects of my career trajectory:

My knowledge depth is considerable but narrow, making it challenging to adapt to other domains due to time constraints. I've attempted to create educational content to share my expertise, but engagement has been minimal given the specialized nature of the subject matter. I'm increasingly concerned about long-term career sustainability, particularly as technologies evolve and the potential for automation increases.

I'm interested in building a more robust professional network and creating additional revenue streams while leveraging my specialized knowledge. Specifically:

How might I expand my professional network beyond my current technical niche? What strategies have worked for other specialized technologists in building a personal brand or distribution channel? How have others successfully transitioned from pure technical work to creating sustainable income streams with greater longevity?

I'm particularly focused on achieving financial security and independence before my current technical specialty potentially becomes less valuable. Any insights or experiences would be greatly appreciated.