AI Research Intern (PhD)

Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in!

At Duolingo, you’ll join a team that cares about educating our users, experimenting with big ideas, making fact-based decisions, and finding innovative solutions to complex problems. You’ll have limitless learning opportunities and daily collaborations with world-class minds — while doing work that’s both meaningful and fun.

Join our life-changing mission to develop education for our half a billion (and growing!) learners around the world. 

Read our blog to learn more.

  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


• Solve our most ambitious problems with the right tool for the task


• Collaborate cross-functionally to bring your ideas to life in the product


• Identify problems, prototype solutions, evaluate their return on investment, and then implement the best solution at scale to improve the lives of our millions of learners each day

✅  You Have...

• Pursuing a PhD in artificial intelligence, machine learning, natural language processing, or related field


• Graduation expected by August 2028


• Contributions to research communities and efforts, including publishing papers at conferences such as ACL, CVPR, EDM, ICML, NeurIPS, etc.


• A portfolio of impactful work, in the form of (for example) publications, open-source projects, or AI internships


• Experience implementing AI systems in Python, Java, Scala, or C/C++ (i.e., not just R or MATLAB)


• A creative, interdisciplinary, and entrepreneurial approach to R&D


• Strong debugging and critical thinking skills


• 12 week consecutive availability
  
  
  
  • May 24, 2027 - August 13, 2027
  
  
  •  June 14, 2027 - September 3, 2027
  
  
  
  


• Ability to relocate to Pittsburgh, PA or New York, NY

⭐  What you can expect...

• Language learning opportunities


• Catered in-house lunches, and breakfast and dinner options


• Company-wide Hackathon


• PTO and company holidays


• Frequent company-wide dinners, monthly celebrations, social clubs, and so much more!