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 (https://blog.duolingo.com/tag/engineering/?utm_source=greenhouse.com&utm_medium=referral&utm_campaign=engblog_gh_091224) , 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 teams we're hiring for:

Reading & Writing Team:

As an iOS engineer on the Reading and Writing Team, you’ll build technology that breaks down language barriers and makes it truly fun to learn. You’ll work on delightful and immersive experiences such as Stories that enable learners to level up their reading skills, as well as exploring new ways to ensure that learners of all levels achieve true proficiency in writing in their language of choice. We’re looking for engineers who are passionate about building new features to further our mission of making education freely available to everyone.

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...

A minimum of 5 years of programming experience in Swift

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:

$148,800 — $274,600 USD

Take a peek at how we care for our employees' holistic well-being with our benefits here (https://careers.duolingo.com/#benefits) .

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 (https://docs.google.com/document/d/e/2PACX-1vTX9GKeRMOMA9Vtm0vfGibrYPYz8ysl0Dg8KSXgj_PxeT5ChsdnNZZWtpxu4t7xillTPGnngnKCjIbV/pub) .

Sign up for job alerts here (http://my.greenhouse.io/users/sign_in?job_board=duolingo) .