I ended up working mostly on features that architects could use to present projects. Stuff like renders and walkthrough animations of the building.
I've moved from CAD to computer-aided engineering. I work on the backend of a compiler for a DSL for control system engineering. My niche is definitely professional tools programming. I'm quite happy where I am right now, but if something ever happened with this job, my preference would be to pivot to another professional tool. I've always thought something like a DAW or 3D modeling software would be fun to work on.