September 15, 2023

Why I chose Duolingo: Julie Wang, iOS Engineer

by Duolingo Team Company

August 29, 2023

How we developed our addictive and delightful widget

by Osman Mansur and Jackson Shuttleworth Product

August 4, 2023

Why I chose Duolingo: Franziska Passing, Senior Operations Engineer

by Duolingo Team Company

July 14, 2023

A little spring cleaning: reducing the app size by 20%

by Peter Chapman and Caesar Wirth Engineering

June 22, 2023

How Duolingo uses AI to create lessons faster

by Parker Henry Learning

June 2, 2023

Why I chose Duolingo: Katie Wallace, Engineering Director

by Duolingo Team Company

May 26, 2023

Why I chose Duolingo: Matt Brandman, Senior Engineering Manager

by Duolingo Team Company

May 1, 2023

Interactive tests for interactive skills

by Sophie Wodzak Engineering

February 17, 2023

Meaningful metrics: How data sharpened the focus of product teams

by Erin Gustafson Engineering

February 15, 2023

I’m a writer—here’s why I’m not scared of GPT-3

by Sophie Wodzak Engineering

December 29, 2022

Engineering impact at Duolingo: building the New Year’s Promotion

by Jonathon Kuo Engineering

December 8, 2022

How we built a personalized Year-in-Review for millions of learners

by Jasmine Zhang and Clark Munson Company

October 14, 2022

How we made developer onboarding a breeze with GitHub Codespaces

by Art Chaidarun Engineering

October 6, 2022

A good read: building Duolingo ABC for Android

by Peter Baker Engineering

September 19, 2022

Interviewing with Duolingo’s Engineering Team

by André Kenji Horie Engineering

September 14, 2022

At Duolingo, humans and AI work together to create a high-quality learning experience

by Bozena Pajak and Klinton Bicknell Learning

June 13, 2022

10 innovations that transformed education

by Luis von Ahn Company

March 31, 2022

Why I chose Duolingo: Alina Abidi, Software Engineer

by Duolingo Team Company

March 11, 2022

Why I chose Duolingo: Basim Baig, Software Engineering Manager

by Duolingo Team Company

January 14, 2022

How we adjust in-app messaging for learners in different languages

by Eva Raimondi Engineering

November 1, 2021

How we protect learner streaks from site issues

by Creston Bunch, Maggie Hewitt and John Nicol Engineering

October 27, 2021

How we rebooted our Android experience

by David Andrews Engineering

September 16, 2021

Interns on a mission: the DuoIntern experience

by Holly Estes Company

September 2, 2021

Why did we deliberately hack the Duolingo English Test?

by Mirza Basim Baig and Sophie Wodzak Engineering

August 23, 2021

Giving our characters voices

by Emily Chiu, Kevin Lenzo and Gretchen Swecker Company

June 29, 2021

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

by Pat Dalsass Engineering

May 21, 2021

How we’re improving learning with anonymized speech data

by Gretchen Swecker, Tyler Tape, Kevin Lenzo and Natalia Castillejo Learning

March 17, 2021

Open sourcing Metasearch, our one tool to search them all

by Art Chaidarun Engineering

February 3, 2021

Why I chose Duolingo: Finding a kind, passionate, mission-driven community

by Margarita Misirpashayeva Company

January 20, 2021

Improving the Duolingo experience with request tracing

by John Nicol Engineering

October 26, 2020

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

by Fabio Lessa Engineering

October 7, 2020

Learning how to help you learn: Introducing Birdbrain!

by Klinton Bicknell and Claire Brust Research

September 3, 2020

“Hi, it’s Duo”: Meet the AI behind the meme

by Kevin Yancey and Burr Settles Research

August 31, 2020

Using AI to open up bottlenecks in course content creation

by Stephen Mayhew Research

July 30, 2020

Celebrating interns past and present: an inside look into Duolingo’s internship program

by Renee Davis Company

April 30, 2020

The Duolingo English Test: AI-driven language assessment

by Burr Settles and Geoffrey T. LaFlair Research

April 6, 2020

Migrating Duolingo’s Android app to 100% Kotlin

by Art Chaidarun Engineering

February 21, 2020

Duolingo Stories: The journey to Android

by Ming Zhang Product

February 3, 2020

Improving how Duolingo teaches Chinese—and other languages!

by Celena Chen Learning

January 10, 2020

Improving Duolingo, one experiment at a time

by Lavanya Aprameya Engineering

December 19, 2019

Who has the best words? A linguistic analysis of the Democratic debates

by Maggie Hewitt Learning

December 16, 2019

How machine learning helps Duolingo prioritize course improvements

by Will Monroe Research

September 19, 2019

How cohorts and correlations help us better understand our learners

by Zachary Golan-Strieb Engineering

September 9, 2019

How we're improving Duolingo's course creation process

by Margarita Misirpashayeva Engineering

September 14, 2018

Partial credit: improvements to Duolingo's placement test

by Logan Weber Learning

July 11, 2018

Crown Levels: A royal redesign

by Joseph Rollinson Learning

January 11, 2018

How Duolingo achieved a 50:50 gender ratio for new software engineer hires

by Jeesoo Sohn Company

September 29, 2017

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

by Adam Hesterberg Engineering

May 30, 2017

Meet a Duo: Caesar Wirth, Senior Software Engineer

by Sam Dalsimer Company

April 24, 2017

Meet a Duo: André Kenji Horie, Senior Software Engineer

by Sam Dalsimer Company

January 31, 2017

Rewriting Duolingo's engine in Scala

by André Kenji Horie Engineering

December 14, 2016

How we learn how you learn

by Burr Settles Research

September 13, 2016

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

by David Andrews Engineering

January 7, 2015

Real World Swift

by Chris Denter Engineering

September 30, 2013

Duolingo’s inaugural hackathon

by Duolingo Team Company