AI Research Intern: Real-World ML for 500M Learners

Duolingo; New York (NY); On-site; USD 92,000 - 95,000; Full time

Job summary

Duolingo seeks interns pursuing a PhD in AI/ML/NLP to apply methods to large real-world datasets and prototype scalable models. You will collaborate with researchers and engineers to build features, publish findings, and evaluate ROI across a cross-functional team.

Availability for a 12-week internship in mid-2027 is required, with relocation to the Northeast region possible. Ideal candidates have publications or open-source work, strong programming in Python/Java/Scala/C/C++, and a creative,

Qualifications

• Pursuing a PhD in AI/ML/NLP or related field.
• Graduation expected by Aug 2028.
• Contributions to research communities and papers at ACL, CVPR, EDM, ICML, NeurIPS, etc.
• Portfolio of impactful work: publications, open-source, or AI internships.
• Experience implementing AI systems in Python, Java, Scala, or C/C++.
• Creative, interdisciplinary, entrepreneurial approach to R&D.
• Strong debugging and critical thinking skills.
• 12 weeks consecutive availability: May 24, 2027 - Aug 13, 2027 or Jun 14, 2027 - Sep 3, 2027.
• Willingness to relocate to Pittsburgh, PA or New York, NY.

Responsibilities

• Apply AI methods to large real-world datasets.
• Prototype models, run small experiments, and productionize solutions at scale.
• Collaborate with researchers, engineers, and others to build features or publish findings.
• Solve ambitious problems with appropriate tools and methodologies.
• Work cross-functionally to implement ideas in the product, measuring ROI.

Skills

Python

Java

Scala

C/C++

Debugging

Critical thinking

Interdisciplinary

R&D mindset

Education

PhD student in AI/ML/NLP

Job description

Duolingo seeks interns pursuing a PhD in AI/ML/NLP to apply methods to large real-world datasets and prototype scalable models. You will collaborate with researchers and engineers to build features, publish findings, and evaluate ROI across a cross-functional team.

Availability for a 12-week internship in mid-2027 is required, with relocation to the Northeast region possible. Ideal candidates have publications or open-source work, strong programming in Python/Java/Scala/C/C++, and a creative,