• Home
  • Topics
    Company Design Engineering Learning Product Research Duolingo English Test
  • Authors
  • Archive
duolingo.com
John Nicol's Picture

John Nicol

November 1, 2021

How we protect learner streaks from site issues

by Creston Bunch, Maggie Hewitt and John Nicol Engineering
January 20, 2021

Improving the Duolingo experience with request tracing

by John Nicol Engineering

Recommended Posts

Research September 13, 2023

Special report: Which countries are most interested in Asian languages?

by Cindy Blanco
Research July 24, 2023

Special report: Which generation is most serious about their streak?

by Duolingo Team

©2023 Duolingo. All rights reserved.

Search