Our mission at Duolingo is to develop the best education in the world and make it universally available. But we've got more left to do - and that's where you come in!
Duolingo is the world's most popular learning app. Beyond our core learning product, we also offer English proficiency testing with the Duolingo English Test, and are bringing new subjects into the Duolingo app, where people can develop their Math and Music skills.
We are passionate about educating our users, making fact-based decisions, and finding innovative solutions to complex problems. We offer meaningful work, limitless learning opportunities, and collaboration with world-class minds. Come brighten your life and over half a billion more!
As an iOS software engineer, you'll join our fast-paced team in bringing new features to the app while making sure it has great performance and is a delightful learning experience. You will develop applications primarily in Swift, and will be involved in the entire process, from ideation to development to rolling out new builds to users. We need our engineers to be versatile, display leadership qualities, and be enthusiastic about tackling new problems across the entire stack as we continue to innovate.
Read about the technical problems our Engineers work on
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...

• 12 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 invest in and support our Duos! This role is eligible for a robust compensation package of base salary, equity, and Duolingo's world-class benefits. The starting base salary range for this role is, $196,000 - $426,000. Actual salary may vary based on level, work experience, performance, and other factors evaluated during the hiring process.
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 your recruiter.
Take a peek at how we care for our employees' holistic well-being with our benefits here.
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.