Plays with crypto, works for AgileBits (but don't speak for them, blah blah). Has done sysadm stuff.
keybase.io proof: [ my public key: https://keybase.io/jpgoldberg; my proof: https://keybase.io/jpgoldberg/sigs/zvE012tQcwlLb_hCw1HwgbGQyUQHlCJ6vUfkHvUUhaE ]