Software Engineer, Intern
Summary
Software engineering internship at Duolingo: contribute to full-stack projects — developing, testing, and maintaining features, services, and infrastructure — for its language-learning education platform. Requires programming experience in Java, Python, Kotlin, or Swift and a 12-week summer 2027 availability.
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.
🧠 What you'll do...
- Contribute to full-stack software projects by developing, testing, and maintaining features and services.
- Develop, release, and maintain services and/or infrastructure
- Lead individual project priorities, deadlines, and deliverables
- Contribute to code reviews and collaborate across teams to ensure quality and scalability
✅ What we're looking for...
- Graduating December 2027 - August 2028
- Pursuing a B.S. or M.S. degree in Computer Science or a related technical field (e.g. math, physics or data science)
- Dedication to our mission of universally available education
- Programming experience in one or more of the following languages: Java, Python, Kotlin, or Swift.
- 12 weeks of consecutive availability
- May 24, 2027 - August 13, 2027
- June 14, 2027 - September 3, 2027
- Deadline to apply: September 30, 2026
⭐ What you can expect...
- Close support from your mentor and your team
- Working on features and projects that will have real impact for our learners and internal users
- A fun, mission-driven environment, where you’ll have lots of opportunities to grow as an engineer and make meaningful connections with your colleagues
👀 Past projects include...
- Developing a GPT-4 chat interface for one of our internal tools to streamline content creation
- Integrating our A/B testing framework with our observability stack to flag experiments that introduce errors
- Spanish audio lessons to improve listening comprehension
- Crafting new lessons to teach Coordinates in our Math course
- Porting large features to new platforms (iOS, Android, web)
- Dashboards and tooling for site reliability insights
- Crafting new microservices from scratch
❤️ Why you'll love working here...
- 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!
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.
Skills
As published by greenhouse · 18 questions · 2 written answers
Basics
First Name, Last Name, Email, Phone, Resume/CV, Cover Letter, Location
Short answers (7)
- Preferred First Name
- How do you pronounce your name? (e.g., 'An-na' or 'Ah-na')
- Undergraduate GPA
- Do you have a Duolingo account? If yes, what is your username? optional
- Alternate Email optional
- LinkedIn Profile optional
- Website optional
Pick from a list (9)
- What is your expected graduation timeline?
- Are you willing to work from the office location of the job?
- Do you have a preference in office location? (Please note - office assignment cannot be guaranteed for this program.) optional
- Where did you hear about this job?
- What Duolingo sponsored conferences have you attended and/or organizations are you a part of? optional
- Are you authorized to work lawfully in the United States for Duolingo?
- Will you now, or in the future, require sponsorship (i.e. H-1B visa, etc.) to legally work in the U.S.?
- If so, are you eligible or currently in a period of Optional Practical Training (OPT)?
- After the OPT, are you eligible for a 24-month OPT extension or are currently in a 24-month OPT extension based upon a degree from a qualifying U.S. institution in Science, Technology, Engineering, or Mathematics after the Optional Practical Training (OPT)?
Written answers (2)
- Why are you interested in Duolingo?
- How will your personal experiences make an impact at Duolingo?