In the early days he worked on Hibernate Core even before it became
part of JBoss, and over time he have been involved in alot of projects
at JBoss, mainly focused on the tooling/developer aspects.
He gets to touch upon almost every technology inside JBoss as they
need tooling. It's given him a unique viewpoint of being an actual user
of the technology - feeling both the pains and joys of a user.
Max have been involved in Ceylon from the early days and tried to keep
up with the evolving specifications. Gives feedback and provide input
in directions of the tooling and as such is now trying to make Ceylon
available from Eclipse.
The last year we have been working full time on JBoss Tools and JBoss Developer Studio. One of the challenges we had were to add support for JBoss Seam in Eclipse. Similar to what the Seam team did for the underlying frameworks (JSF, EJB3, JPA, etc.) we had to do integrate/adjust for the various plugins that exists in the Eclipse family (WTP, JSF, Dali, etc.).
One of my favorite feature in JBoss Tools is the Project Archives which provides automatic and incremental archiving of arbitrary directories into a zipped archive (jar,zip,war,etc) or into an exploded directory. Usable for any development that wants hot and/or exploded deployment.