Walker
Walker earned his undergraduate degree in applied math from Columbia University and later finished a master's degree in statistics from Duke University. He now works for the New York Yankees as a quantitative analyst in their front office.
Alex
Alex graduated from Skidmore College with a BA in English Literature and a minor in Fiction Writing. He has worked as a Linux systems admin, a full-stack software developer, and a software consultant.
Sally
Sally is a software engineer at an EdTech company in Boston. She has a BA from Princeton University in Computer Science, where she researched high school computer science pedagogy and curriculum.