D
AI Research Intern (PhD)
Duolingo
This job at a glance
- Who can apply
- New grads and up to 1 year
- Must know
- Machine learningNLPPythonJavaC++C
- Work
- On-site in New York · internship
- Pay
- Not stated by the employer.
- Skill demand
- Python61%Machine learning60%NLP10%Java10%of 99 similar entry-level jobs posted in the US this week
- Listed
- Nov 6, 2026 · still open
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About the Role
Join Duolingo's mission to develop the best education in the world and make it universally available. Work with a team focused on educating users, experimenting with ideas, making fact-based decisions, and finding innovative solutions to complex problems. You will have learning opportunities and daily collaborations with world-class minds, doing meaningful and fun work.
Key Responsibilities
- 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 researchers, engineers, and others to build new product features and/or publish state-of-the-art findings.
- Solve ambitious problems with the right tool for the task.
- Collaborate cross-functionally to bring ideas to life in the product.
- Identify problems, prototype solutions, evaluate their return on investment, and implement the best solution at scale.
Requirements & Tech Stack
- Pursuing a PhD in artificial intelligence, machine learning, natural language processing, or a related field.
- Graduation expected by August 2028.
- Contributions to research communities, including publishing papers at conferences such as ACL, CVPR, EDM, ICML, NeurIPS.
- A portfolio of impactful work, such as publications, open-source projects, or AI internships.
- Experience implementing AI systems in Python, Java, Scala, or C/C++.
- A creative, interdisciplinary, and entrepreneurial approach to R&D.
- Strong debugging and critical thinking skills.
- 12-week consecutive availability.
- Available for internship sessions:
- 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.
Hourly Range: $67 — $69 USD