David Morgan, aka "Morgan :)", is a software engineer at Google, where he's been writing Dart code professionally since before Dart 1. Most of that work has remained Google internal, but some has made it to the open source world, in particular the packages "built_collection" and "built_value" for immutable data models. At the start of 2025, following the cancellation of the macros language feature, he started working full time on "build_runner" and related packages with the goal of delivering as much as possible of what users were hoping for from macros as incremental improvements to Dart codegen.

https://medium.com/@davidmorgan_14314