Hadrian is a programmer famous for ICE design, his eponymous Wall being his most famous creation, which he created for the Weyland Consortium.
Source[]
g00ru's quote on the card for the Hadrian's Wall ICE is, as of April 2015, the only reference to Hadrian as a programmer.
Speculatively, it seems likely that Hadrian was the ICE programmer's 'handle', chosen in reference to the Roman Emperor who ordered the construction of a famous wall in Britain.
Quotes[]
"He had a bit of an ego, ol' Hadrian. His constructs live up to it, though."