November 1, 2021

How we protect learner streaks from site issues

Creston BunchMaggie HewittJohn Nicol Engineering

October 27, 2021

How we rebooted our Android experience

David Andrews Engineering

September 2, 2021

Why did we deliberately hack the Duolingo English Test?

Mirza Basim BaigSophie Wodzak Engineering

June 29, 2021

Bird's Eye: A powerful tool for exploring app screenshots

Pat Dalsass Engineering

March 17, 2021

Open sourcing Metasearch, our one tool to search them all

Art Chaidarun Engineering

January 20, 2021

Improving the Duolingo experience with request tracing

John Nicol Engineering

October 26, 2020

Why I chose Duolingo: Finding purpose and happiness as an Engineering Director

Fabio Lessa Engineering

August 28, 2020

Interviewing with Duolingo’s Engineering Team

André Kenji Horie Engineering

April 6, 2020

Migrating Duolingo’s Android app to 100% Kotlin

Art Chaidarun Engineering

January 10, 2020

Improving Duolingo, one experiment at a time

Lavanya Aprameya Engineering

September 19, 2019

How cohorts and correlations help us better understand our learners

Zachary Golan-Strieb Engineering

September 9, 2019

How we're improving Duolingo's course creation process

Margarita Misirpashayeva Engineering

September 29, 2017

How I saved Duolingo $40,000/year in my summer internship

Adam Hesterberg Engineering

January 31, 2017

Rewriting Duolingo's engine in Scala

André Kenji Horie Engineering

September 13, 2016

Flipping Duolingo: filling a gap in support for right-to-left languages

David Andrews Engineering

January 7, 2015

Real World Swift

Chris Engineering