A senior member of GMT (I might be older than Paul W!). I’ve been using and abusing GMT since around 1990 (I have CD ROMs of early distributions). Most of the graphics I’ve created across my career came from GMT.
These days I work with NASA’s ICESat-2 Project Science Office (at Goddard Space Flight Center) in a variety of roles. In the past, I’ve worked on NASA missions that include: the Crustal Dynamics Project, analysis of Lageos SLR data, Seasat data, gravity field work in preparation for the TOPEX/Poseidon mission, gravity field work for Mars in preparation for Mars Observer), a variety of geodetic- and cryospheric-related investigations for ICESat and, now, for ICESat-2.