Hi There!
I’m Joseph, the engineering lead for Duolingo’s Learning Scaling area where we combine large language models with pedagogical expertise to build high quality content at scale.
When not at work I enjoy cycling, hiking, running, and exploring new places.
Learn more about me!
Recent Posts
DuoCon 2020 - Our Efficacy Study
Every year, Duolingo hosts a convention where we share new features and host guest speakers. This year, I presented our recent work on measuring the effectiveness of Duolingo, including our 2020 Efficacy Study.
How Well Does Duolingo Work?
In this study we found that Duolingo users who completed 5 sections of our French and Spanish courses for English speakers performed as well as university students who completed 4 semesters of university language instruction on reading and listening proficiency tests. Read the blog post or dive into the white paper!
NCME: Learning Assessment & User Behavior
At this joint NCME conference panel with learning scientists from Khan Academy and Digital Promise, we share our approach to measuring learning in a data driven company culture.