I appreciate the introspective question. I think at a foundational level, it's a matter of being left out of meetings and conversations pertaining to tasks/features that I was previously responsible for. While I do miss having my input heard, I imagine that being "another cog in the machine" is just something that I'll need to get used to for the remainder of my time here.

Maybe you should have more candid discussions about where you want to be with whoever it is you report to...

I think the first step would be making sure you know what you want, they know what you want, and everyone is on the same page to get there.

I mean, are you okay just being another engineer or do you want to a key technical leader as the organization grows? Those can be two very different roles.