Thain Simon earned his law degree from Duke University School of Law. He received a master's degree with distinction in Social Science of the Internet from the University of Oxford and graduated magna cum laude from Santa Clara University with a bachelor's degree in finance and international studies. Before law school, Thain worked as a product manager at a digital health startup and a national, technology-focused primary care provider. He began his career in finance at a large internet technology company.

Thain is not yet admitted to practice in North Carolina.