Alexander leads Open Philanthropy’s work, which ranges across global catastrophic risks, scientific research, policy advocacy, and global health and development. As a cofounder of Open Philanthropy, he led our initial process for selecting focus areas and hiring and training program officers within them. Previously, Alexander worked as a researcher at GiveWell, conducting evidence reviews and cost-effectiveness analyses for potential top charities. He has a B.A. in philosophy and an M.A. in education policy from Stanford University. You can hear him discuss our work on this episode of the 80,000 Hours podcast, or read more in this interview in The Browser.