# Billy Leet, M.S.

Billy Leet is a senior user experience researcher at Duolingo, and a former speech-language pathologist. He conducts research to understand how learners use tools like Duolingo to study languages.

Jun 23[Ben Reuveni, Ph.D.](https://blog.duolingo.com/author/ben/)

[**Cómo nuestros usuarios (¡o sea, tú!) nos ayudan a mejorar Duolingo**](https://blog.duolingo.com/como-nuestros-usuarios-o-sea-tu-nos-ayudan-a-mejorar-duolingo/)

Apr 4[Ben Reuveni, Ph.D.](https://blog.duolingo.com/author/ben/)

[**How our learners (that’s you!) help improve Duolingo**](https://blog.duolingo.com/how-duolingo-works-with-learners/)