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.

Below you can find more information about the team we're hiring for :

Chess Team

The Chess team builds engaging, educational features through Duolingo’s signature approach to learning. On this team, you will shape core product experiences by improving gameplay and creating engaging, high-quality course content. As an engineer building Duolingo's newest product () , you can expect to move quickly, prototype boldly, and experiment often!

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 with strong competencies in data structures, algorithms, and software design

Programming experience in Swift

Exceptional candidates will have...

Strong proficiency in Swift, with proven ability to build and maintain production-level applications

Strong technical knowledge of iOS mobile application development for iPhone / iPad using Swift with Cocoa Touch and related frameworks

Experience designing clean and maintainable APIs

Experience with multithreaded programming

Experience writing unit tests and testable code

Knowledge of iOS SDK performance tools and optimization techniques

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.

Salary Range :

$177,700 — $240,400 USD

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 accommodations@duolingo.com.

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 () .

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