Senior iOS Software Engineer

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

Math Team

As an iOS engineer on the Math team, you will help build the technology that changes how people around the world learn Math. The features that you ship will help learners to develop core math skills in a fun, engaging way. We’re looking for engineers who love building new products and features.

Video Call Experience Team:

The Video Call Experience team is responsible for both the technical foundation and product roadmap for Duolingo's Video Call product — a core feature that allows users to bridge the speaking & listening gap in their language learning journey. You'll architect robust infrastructure while creating engaging user experiences, working closely with design and product partners. We're looking for engineers who champion solid system design and find excitement in working with cross-functional partners to make language learning more fun and accessible.

🧠 You will...

Collaborate on software projects with product design and backend aspects

Develop, release, and maintain native iOS applications, primarily in Swift

Mentor and set technical direction for junior engineers across the company

✅ You have...

A Bachelor’s degree in Computer Science or a related technical field

A solid foundation in computer science