To get in touch for work reasons, or just to chat about the weather or whatever, I am reachable in a couple of ways. I’d strongly recommend encrypted email.
hello(at)darrenmartyn(dot)ie (PGP key coming soon).
Keybase Chat: https://keybase.io/darrenmartyn (not checking this right now, devices are in another country)
Or, I guess, if you really must: https://twitter.com/_darrenmartyn (I actually can’t log into this right now, so whatever)