I'm a Samba developer and occasional wireshark contributor. So far my contributions have been to the AIM, DCOM, BitTorrent and DCE/RPC dissectors.
My personal homepage is at http://samba.org/~jelmer/. I can be reached by email at jelmer@samba.org
One of the things I'm currently working on is generating DCE/RPC dissectors using Samba4's IDL compiler (together with RonnieSahlberg and TimPotter).