About Me

My name is Josh. I work on all things "technical computing", but my niche is the intersection of statistics and computer science. I'm good at solving problems and then converting whiteboard math into efficient programs. Julia is my favorite language. During my PhD I researched online (a.k.a. streaming/single-pass) algorithms for statistics (see OnlineStats.jl).

Things I've Built


Open Source

Closed Source


PhD, Statistics2018NC State University
MS, Statistics2014NC State
BS, Math & Statistics2012Winona State University
BA, Economics & Music2009Winona State University

Work History

🏢 Senior Research Scientist at Julia Computing (Oct 2017 - Current)

🏢 Data Scientist II at Valassis Digital (Aug 2019 - Oct 2019)

🏢 Data Scientist Intern at MaxPoint (May 2015 - Aug 2015)

🏢 Statistical Development Intern at SAS-JMP (May 2013 - May 2014, May 2015 - May 2016)

🏢 Statistics Consultant at Winona State University (Jan 2012 - Aug 2012)

🏢 CRM Analytics Intern at Best Buy (May 2011 - Sep 2011)

Selected Talks

Slides and other materials available at https://github.com/joshday/Talks.


All courses taught at NC State.

© Josh Day. Last modified: August 16, 2023. Powered by Franklin.jl.