Senior iOS Engineer

Our mission at Duolingo is to develop the best education in the world and make it universally available. Its a big mission and thats where you come in!

At Duolingo youll 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. Youll have limitless learning opportunities mentorship and collaboration with world-class minds and a variety of projects with large scopes while doing work thats 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

Core App Performance Team
The Core App Experience team is in charge of improving the user experience in core flows of the iOS and Android apps to drive user growth. Sitting in between the intersection of technical and product work you will drive technical improvements in app open session start and end and improving the offline experience. Were looking for engineers who are willing to deep dive into the codebase and provide their suggestions on how to improve the everyday experience of our users.

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 Bachelors 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

Take a peek at how we care for our employees holistic well-being with our benefitshere.

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.

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.

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