Wastewater Biosurveilance Workshop 2023: Predicting Relative Abundance (slides)
Effective Altruism Global, 2016: Earning to Give (transcript)
When I was working on ads at Google I also spoke at several internal events (Google is large enough to have internal conferences) but unfortunately none of those are public.
I've also given talks at smaller events:
Harvard Law School, 2019-04-08: Effective Altruism Timeline (slides)
Swarthmore College, 2017-04-05: Effective Altruism in Practice (slides)
Boston University Academy, 2016-03-24: Effective Altruism (slides)
Boston Web Performance Meetup, 2015: Automating Optimization with PageSpeed (video)