Software Engineer II, Android

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 finding innovative solutions to complex technical problems , running countless experiments (300+ at a time!) with our massive user base to make data-driven decisions, and educating our users and employees alike. You’ll have limitless learning opportunities, mentorship and collaboration with world-class minds, and a variety of projects with large scopes — while doing work that’s both fun and meaningful.

Join our life‑changing mission to develop education for our half a billion (and growing!) learners around the world.

The Subscriber Conversion team owns the surfaces that turn learners into subscribers and keep them subscribed including in‑app hooks and paywalls, the purchase flow, pricing and packaging, payments, and subscription partnerships. The team is highly experimental, running a steady stream of A/B tests across iOS, Android, backend, and web, and balances quick optimizations on high‑traffic surfaces with larger bets like new tiers and partner offerings.

• Collaborate on software projects with product design and backend aspects
• Develop, release, and maintain native Android application features in Kotlin
• Mentor and set technical direction for junior engineers on the team

• A Bachelor’s degree in Computer Science or a related technical field
• Programming experience in Kotlin on Android
• The ability to communicate technical issues effectively to technical and non‑technical stakeholders

• Strong programming experience building reactive Android apps
• Demonstrated self‑direction, with a desire both to learn new techniques and mentor others
• Experience designing clean and maintainable APIs
• Experience writing unit tests and testable code

Take a peek at how we care for our employees’ holistic well‑being with our benefits here.

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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

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.

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  or  Stay alert and double‑check these details before sharing any information.

Duolingo uses AI technology to assist in our hiring process. We want to be transparent about how we use this technology and your rights. We use Greenhouse Software’s Talent Matching feature to assist with reviewing applications for the skills and experience we have decided are important for this role.

• Talent Matching reviews your resume and responses to application questions to determine the extent to which your qualifications match the job requirements selected for this role. These requirements and their desired weighting are established by our recruiters in collaboration with hiring managers.
• All Talent Matching output is reviewed by our recruiting and hiring teams, who make the final decision on each application. Talent Matching does not automatically disposition any candidate or make hiring decisions.

Salary Range:

$153,000 — $207,000 USD