What is a QA Engineer at Duolingo?
A QA Engineer at Duolingo plays a critical role in ensuring that millions of learners worldwide enjoy a seamless, uninterrupted, and highly gamified learning experience. Because Duolingo relies on micro-interactions, streak mechanics, speech recognition, and complex localized content across dozens of languages, software quality is directly tied to user retention and education outcomes. As a QA Engineer, you do not just find bugs; you protect the learning habits of over 500 million users.
You will work closely with cross-functional teams of software engineers, product managers, designers, and curriculum specialists. Your work will directly impact core product areas, such as the Duolingo mobile apps (iOS and Android), web platform, and specialized features like Duolingo Max or the Duolingo English Test. The scale of the platform means that a single undetected regression can disrupt learning streaks for millions of users, making your role highly visible and strategically vital.
The engineering culture at Duolingo is fast-paced, data-driven, and collaborative. Candidates can expect to work on sophisticated test automation frameworks, design patterns for test suites, and hands-on, in-app exploratory testing. It is a challenging yet deeply rewarding environment where technical excellence meets a mission to make education free, fun, and available to all.



