ApplySarthiData Scientist, Intern (PhD)
Duolingo
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This role on the market
2,209 open scientist roles across 345 companies are on ApplySarthi right now, most of them in Bengaluru (134), Hyderabad (69), Delhi NCR (33).
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What scientist roles keep asking for: Python (61%), Machine learning (48%), SQL (29%), Deep learning (19%), C++ (18%), LLMs (18%), R (18%), Java (17%) — counted across their open postings here.
Data Scientist jobs in the United States · Data Scientist jobs in New York · Remote Data Scientist jobs · BigQuery jobs · Machine learning jobs · Python jobs · R jobs
Duolingo has 65 open roles listed here.
- Senior Director of Performance Marketing
- People Relations Business Partner
- Data Scientist, Intern
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- AI Research Engineer, New PhD Graduate
Counted across 14 company job boards, updated as roles open and close.
Preparing for this interview
Interviews for scientist roles keep coming back to Python, Machine learning, SQL, Deep learning. Practise those questions before you sit with Duolingo.
Questions you are likely to be asked
- Why do you want to join Duolingo?
- What is your experience with BigQuery? Tell me one thing you learned the hard way.
- Tell me about a time the data was messy or wrong. What did you do?
- How would you explain your model's result to someone who is not technical?
- What would you check first if a model's accuracy dropped after going live?
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Practise the Data Scientist, Intern (PhD) at Duolingo interview free →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.
About the role
You will...
- Derive insights from data to influence product roadmaps and drive business results
- Apply advanced analytical methods, structural approaches, causal inference, and/or machine learning and AI to model user behavior and estimate the impact of potential new feature implementations, and collaborate with product and engineering teams to develop solutions
- Evaluate product experiments to create and improve user experiences
- Communicate and present findings and recommendations to senior management
- Help preserve our culture of fact-based decision making as we scale
You have...
- Pursuing a PhD degree (in at least the third year of PhD program) in a quantitative field (e.g. Economics, Finance, Statistics, Math, Linguistics, Computer Science, Computational Social Science, ML/AI), ideally planning to graduate in Fall 2027 or Spring/Summer 2028
- Strong understanding of consumer digital products and an interest in applying advanced analytics and economics to business outcomes
- Previous experience analyzing large datasets, communicating results to technical and non-technical senior-level audiences, and making actionable recommendations that improve the product or business
- Skilled in SQL, R or Python, and/or statistical methods to analyze behavioral data
- Enthusiasm for learning and sharing analytical methods to help grow a collaborative Data Science team and data-forward company culture
- Able to relocate to Pittsburgh or NYC for the internship
Exceptional candidates will have...
- Experience with "big data" and cloud computing technologies like BigQuery, Snowflake, and/or dbt
- Experience articulating business questions and using available data to find answers that translate into product recommendations
- Self-starter, with a desire to both learn new techniques and guide others
- Previous experience/internships in applied business settings
- Familiarity with AI tools such as Cursor, a knack for prompt engineering, and a desire to continue to innovate and learn in AI
- A GPA of 3.5+
- A Duolingo streak
Why you’ll love working here…
- Language learning opportunities
- Catered in-house lunches and breakfast
- 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!
Benefits: Take a peek at how we care for our employees' holistic well-being with our benefits here.
Job Alerts: Sign up for job alerts here.
Accommodations: 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 accommodations@duolingo.com.
Equal Employment Opportunity: Duolingo is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.
Fraud Warning: Unfortunately, there is a rise in scammers pretending to be real Duolingo employees. Duolingo and our employees will never ask for your Social Security number, bank details, or passport info, and we’ll never ask you to deposit a check, purchase equipment, or exchange money during the interview process. Real Duolingo employees always use an email that ends in @duolingo.com or @recruiting.duolingo.com. Stay alert and double-check these details before sharing any information.
By applying for this position your data will be processed as per the Duolingo Applicant Privacy Notice.
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Listed on greenhouse · posted 2026-10-15. ApplySarthi collects openings and links to application pages; the role is advertised by Duolingo, not by us.