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.
About the role...
As an engineer on the App Builds team in our Client Platform area you’ll be responsible for evaluating and setting the direction for our Android builds. This includes centralizing build logic, working on modularization strategies, and optimizing build times across 70+ Android developers.
🧠 You will...
- Drive the modernization of our CI build and release pipelines with the migration to new Github Action workflows
- Develop tooling and automation to accelerate the modularization of our Kotlin codebase
- Design and evolve Android test infrastructure to improve developer velocity and test reliability
- Proactively identify and implement improvements to our build performance, reliability, and developer workflows as the Android ecosystem evolves
- Foster a culture of engineering excellence and mentor engineers of all experience levels
✅ You have...
- Experience supporting either Gradle-based projects or large Android builds
- Proven ability to drive large-scale technical initiatives across multiple teams
- Proficiency in Android development using standard tools and frameworks
⭐ Exceptional candidates will have...
- Expertise working with CI/CD platforms like Github Actions
- Experience with Gradle principles e.g., caching and task avoidance
We post a multi-level salary range for all of our roles.
This is not inclusive of the rest of our awesome portfolio that includes equity compensation and world-class benefits. Our salary ranges are the same for all US locations. Your recruiter can share more details about the range for a specific level during the hiring process. The actual salary within the range is determined by many factors including but not limited to, skills, experience, education, and internal equity.
Take a peek at how we care for our employees' holistic well-being with our benefits here.
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 [email protected].
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.
By applying for this position your data will be processed as per the Duolingo Applicant Privacy Notice.
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.
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Skills Required
- 6+ years of Android software engineering experience
- 1-2+ years developing scalable production software
- Experience supporting Gradle-based projects or large Android builds
- Proficiency in Android development using standard tools and frameworks
Duolingo Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Duolingo and has not been reviewed or approved by Duolingo.
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Fair & Transparent Compensation — Pay is considered competitive for core engineering and product roles, with required jurisdictions showing posted ranges and immigration filings implying a strong base-salary floor. Public compensation snapshots indicate senior packages can scale higher, supporting a clear, market-aligned structure.
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Healthcare Strength — Comprehensive medical, dental, and vision coverage is paired with mental-health resources and fertility support as core offerings. Coverage for dependents and strong wellness benefits are consistently highlighted.
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Leave & Time Off Breadth — About 20 days of PTO plus a two‑week company winter break and paid holidays provide substantial time away. A formal sabbatical at 10 years further expands long‑term recharge options.
Duolingo Insights
What We Do
Duolingo is a language-learning education platform that offers 98 total courses across nearly 40 distinct languages. Duolingo is the world’s most popular way to learn a language. Our mission is to develop the best education in the world and make it universally available. Some of our products include: 1. Duolingo: The free, fun, and effective way to learn a language! 2. DET (Duolingo English Test): A modern language proficiency tool designed for today's international students and institutions. It offers an English proficiency score, video interview, and writing sample in an accessible, efficient, and secure testing experience. 3. Duolingo Math: An app that can make math be fun. For everyone. Students can focus on elementary math, which covers classroom topics, or adults can focus on brain training, which strengthens mental math skills and covers more advanced topics. 4. Duolingo ABC: An educational learning app that offers immersive lessons to teach preschool to second grade kids reading fundamentals. Founded in 2011 by Luis von Ahn and Severin Hacker, Duolingo is the most downloaded education app in the history of the App Store and in 2019 became the top-grossing education app worldwide. The app has been awarded Apple's iPhone App of the Year and Android's Best of the Best. Learning a new language used to be expensive; we believe it should be free. Over 1.2 billion people are learning a second language and most of them are learning English to improve their lives. Learning a new language is hard; we believe it can be fun. We use bite-sized lessons that feel like playing a game to keep our learners motivated. With over 500 million learners we have unprecedented data insights on how people learn. Our teams of language learning scientists, machine learning engineers, and AI experts use this data to constantly improve our effectiveness. We’re building a future in which the highest-quality education is accessible to all. Duolingo has been named: 2022 Fast Company’s Best Workplaces for Innovators 2022 Fast Company 10 Most Innovative Education Company 2021 Forbes Best Startup Employers 2020, 2018, 2017, 2013 Most Innovative Company by Fast Company 2020 Best Machine Learning Startups for by Glassdoor 2018 Inc. Best Places to Work 2018 Entrepreneur Top Company Culture List University Program Awards: 2022 Handshake Early Talent Award 2022 Untapped Top Internship Programs 2022 OneReq Internship Program Trailblazer Award
Why Work With Us
Our global team works together to make language learning fun, free, and effective for anyone who wants to learn, wherever they are. Best of all, you get to work alongside Duo (literally)!
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