Liz Marley, unlike your host, is not afraid of math — and she brings that fearlessness to work every day on OmniGraffle, which is chock-full of math-y goodness.

After getting a computer science degree from Harvey Mudd, then joining The Omni Group in 2005 and working as a tester, OmniBugZapper PM, tester, OmniFocus PM, and tester, two years ago she walked down the hall and switched to engineering. She also volunteers for App Camp for Girls, does innovative technical talks (using Swift playgrounds), and keeps up on her knitting.

You can find Liz @emarley on Twitter.

Some other people, places, and things mentioned: