Senior Software Engineer, iOS

An iOS expert who will help millions of people learn on a mobile device.

Duolingo software engineers develop next-generation education technology that changes how over 500 million people around the world learn. We’re looking for engineers who bring fresh ideas from all areas in computer science, including natural language processing, machine learning, large-scale system design, and iOS & Android mobile app development. As an iOS software engineer, you will work on a specific project critical to Duolingo’s needs, with opportunities to switch teams and projects as our fast-paced startup grows and evolves. You will develop applications primarily in Swift. We need our engineers to be versatile, display leadership qualities and be enthusiastic to solve new problems across the full-stack as we continue to innovate.

You will...

- Collaborate on software projects with product design and backend aspects

- Develop, release, and maintain native iOS applications

- Manage individual project priorities, deadlines and deliverables

You have...

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

- A solid foundation in computer science with strong competencies in data structures, algorithms, and software design

- Programming experience in Swift

- Ability to travel to Duolingo's Pittsburgh, PA headquarters every quarter

Exceptional candidates will have...

- 5 years of programming experience in either 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

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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.

Because Duolingo requires all employees to return to work from an office, all employees will need to be fully vaccinated against COVID-19 as recommended by the Centers for Disease Control and Prevention to remain employed unless they have an exemption to vaccination pursuant to a required reasonable accommodation. This is so that our employees feel safe in the office.

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.