Growth EM at Opendoor. "Serial Entrepreneur." Lots of things before that (https://about.alexeymk.com)
As an engineer: http://tnw.co/19gbcLy - created an easier way to schedule meetings, from idea to implementation - used by thousands. As a founder: PennApps hackathon, started as a 50 person event - ran the first three events, growing each time, brought on the team that made it the 1,200 person, 100 school, $250k budget event it is today
Describe the most impressive thing you've done.