Aaron Bentley has worked on many parts of Bazaar, including:
- merge (and merge-base selection, conflict handling, merge-type=weave, etc)
- revert
- bundles and merge directives
- branch formats
- nested trees
- optimizing log
- progress bars
- option parsing
He also works on
- BzrTools
- BundleBuggy
- Cart
- gannotate, from the bzr-gtk plugin
His home page is at http://code.aaronbentley.com.
He also had a lot of backlinks pointing to him.