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Senior/iOS Engineer II

Duolingo - New York, NY

Posted Dec 2, 2025

Benefits

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About this role

Senior/iOS Engineer II New York, NY 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 We are hiring for multiple levels for any one of the following teams. Leveling is usually determined once all interviews are completed. Notifications Team As an iOS engineer on the Notifications team, you will build features that empower learners to build long-term habits by improving how we schedule, personalize, and deliver notifications. You will design and implement meaningful notification experiences while collaborating with backend, data science, and product teams. Notifications are fundamental to Duolingo, and we're looking for engineers who are energized about experimenting and shipping features end-to-end. Ads Team: Duolingo's Monetization pillar builds the systems that fund our mission: from subscription packaging and advertising to ML-powered personalization and beyond. As a Senior iOS Engineer on Ads, you'll work on a product engineering team responsible for growing

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