Duolingo

Language learning app with gamified lessons

AI Research Intern

AI ResearchPosted on Nov 6

Internship · Summer 2027$67 - $69 /hr

About the Job

Requirements

The candidate must be pursuing a PhD in artificial intelligence, machine learning, natural language processing, or a related field.
The candidate's graduation is expected by August 2028.
The candidate must have contributed to research communities and efforts, including through conference publications such as ACL, CVPR, EDM, ICML, or NeurIPS.
The candidate must have a portfolio of impactful work, such as publications, open-source projects, or AI internships.
The candidate must have experience implementing AI systems in Python, Java, Scala, or C/C++, rather than only R or MATLAB.
The candidate must have 12 consecutive weeks of availability during one of the listed internship periods: May 24–August 13, 2027, or June 14–September 3, 2027.
The candidate must be able to relocate to Pittsburgh, PA, or New York, NY.

Responsibilities

Apply artificial intelligence methods to large real-world datasets.
Prototype new models, evaluate them with small-scale experiments, and/or productionize solutions at scale.
Work with researchers, engineers, and others to build product features and/or publish research findings.
Select appropriate tools to solve complex problems.
Collaborate across functions to bring ideas into the product.
Identify problems, prototype solutions, evaluate return on investment, and implement the best solution at scale to improve learners' experience.

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!

Connect with your recruiter on the benefits for interns at Duolingo!

Hourly Range for this internship is:

$67—$69 USD

Hourly Range for this internship is: 67 - 69 USD

About the Company

Duolingo

Language learning app with gamified lessons

Duolingo creates an online language learning platform that offers bite-sized, gamified lessons. It uses a freemium model: core features are free with in-app advertisements, while a premium subscription unlocks an ad-free experience and additional features. The app works by presenting short lessons that reinforce language skills through interactive exercises and rewards, designed to keep users engaged and learning daily. Compared with competitors, Duolingo leverages a very large global user base and a well-known brand, highlighted by being the most downloaded education app in App Store history and a leading education app by revenue in 2019, along with a visible emphasis on workplace culture. Its overarching goal is to make high-quality education universally accessible to people around the world.

Company size: 1,001-5,000
Company stage: IPO
Headquarters: Pittsburgh, PA
Founded: 2011

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