[benzesandbetter]

[1] Considering hiring an engineer or two that you respect, starting with small tightly-scoped projects. I did this when I was solo consulting. It helped me learn new things and identify better approaches. It was enjoyable overall. My projects were better off as a result.

I had a couple of duds in the process, and starting with small, compact projects allowed me to cut those losses early.

[2] Another approach is to find someone in a similar situation to talk shop on a regular basis. Meet for coffee or online for an hour once a week, or however the timing works out. Talk about what you're both working on. Walk through some code, and do code reviews for each other.

[3] User groups and meetups can also you find these sorts of conversations.

Personally, I think it's best to have these engagements centered around your own project/product rather than just being technology-adjacent. Even better when you're putting your own money/product on the line. it gives you a gut-check on how valuable these these conversations are, which are worthwhile, and which areas have the most potential.

The people you meet in the second and third approaches can help identify who to work with in the first.