It is part time for everyone I believe. Terry would have been the only full time games industry person and he passed away in the last year - and he was dedicated to Shadow World as far as I know, which his will assigned the rights to ICE.
Anyway, Nicholas Caldwell who has produced the Guild Companion for years and is a Professor of Engineering at University of Suffolk, Post-doc at Cambridge is the licensee for the ICE Intellectual Property. John Seal (the owner of the intellectual property) is a long term fan who had the money to do so, but assigned the licenses to Bruce (long term ICE) and Heike who tried to make a go of it full time along with Tim who created HARP and at least one other full time employee, Monica who did the layouts/edits/etc. John acquired it during the bankruptcy back around 2000 when the original ICE owners shut down for various reasons.
John reassigned the rights to Nicholas and The Guild Companion a while back now. I don’t know all the details, nor care to. I like Bruce/Heike/Tim, I also like Nicholas.
Anyway, like I was saying I am not sure there is anyone full time on ICE right now. Perhaps Colin. Jonathan as far as I know isn’t… with his skills with Excel, I’d bet he is a financial guy somewhere…

… Jonathan Dale’s character spreadsheet(s) were and I assume still are awesome.
Anyway, I never played Rolemaster or any game for the art. As I said before, brings backs feel of the era when I started for me, so don’t mind it at all. The budget I assume was pretty small for art acquisition and primarily they’re going for the content and the system, fixing things, streamlining, and merging RM2 and RMSS/RMFRP… this the what the U is all about.
The system is simply my favorite Fantasy Roleplaying system out there as a I have said before. As soon as my kids are old enough, we’ll switch to it from DnD and see what they think. Right now, but too complex for them - and I am not personally worried about some the Crit table descriptions of what happens, but might as well let them a be a bit older before exposing them to a few more gory details.