I work at Bakpax, where we're focusing on making teachers' lives easier. Previously, I've worked at other education companies, including Khan Academy, where I ran the Backend Engineering Team and Coached Learning Team, and at Knewton. Before that, I founded the Kiln distributed source control system. In my free time, I program in Python and in Pharo, an open-source, cross-platform Smalltalk dialect. You can browse most of my code at GitHub.