AI Research, Intern (PhD)

Our mission at Duolingo is to develop the best education in the world and make it universally available. But we’ve got more left to do — and that's where you come in!

Duolingo is the most popular language-learning application in the world, with over 500 million users and over half a billion exercises completed daily. Beyond our core learning product, we have also entered into literacy with Duolingo ABC, English proficiency testing with the Duolingo English Test, and even Math.

We are passionate about educating our users, making fact-based decisions, and finding innovative solutions to complex problems. We offer meaningful work, limitless learning opportunities, and collaboration with world-class minds. Come brighten your life and over half a billion more!

Duolingo AI Research is a small and nimble team, using data to develop new hypotheses about language and learning, test them empirically, and ship products based on research. As an AI Research Intern (PhD) you are a colleague, and your code and ideas will affect tens of millions of people worldwide. You will learn deeply and broadly from our team of award-winning engineers and researchers.

You Will...

• Apply AI methods to massive real-world datasets
• Prototype new models, evaluate with small scale experiments, and/or productionize solutions at scale
• Work with a cross-functional team of world class researchers, engineers, and others to build new product features and/or publish state-of-the-art findings

What we're looking for…

• Pursuing a PhD in artificial intelligence, machine learning, natural language processing, or related field
• Graduation expected by August 2025 (or sooner)
• Experience implementing AI systems in Python, Java, Scala, or C/C++ (i.e., not just R or MATLAB)
• Contributions to research communities and efforts, including publishing papers at conferences such as ACL, CVPR, EDM, ICML, NeurIPS, etc.
• 12 week consecutive availability
• Ability to relocate to Pittsburgh, PA

Why you’ll love working here…

• Language-learning opportunities
• In-house breakfast and lunch options
• Company-wide Hackathon
• Generous paid time off and company holidays
• Frequent team dinners, monthly celebrations, social clubs, and so much more!
• Dedicated mentorship and colleagues who are both competent and caring
• Find out more by visiting our blog
• EEOC + Reasonable accommodation info automatically included in all Greenhouse job postings

We will do everything we can within reason to make sure that your interview takes place in an environment that fairly and accurately assesses your skills. If you need assistance or accommodation, please contact your recruiter.

We aim to return to office, and as such are requiring all employees to be fully vaccinated against COVID-19 and have received any booster doses as recommended by the Centers for Disease Control and Prevention.

Take a peek at how we care for our employees' holistic well-being with our benefits here.