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Duolingo

Senior iOS Software Engineer

Build and maintain native iOS apps in Swift for Duolingo's core short-form learning features, collaborating with design and backend teams while mentoring juniors. Requires Bachelor's in CS, Swift experience, and strong CS fundamentals.

178k – 240kPittsburgh, PAiOS EngineeringOnsite
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About the role

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

Skills

SwiftiOSCocoa TouchSwiftUIData StructuresAlgorithmsUnit TestingMultithreadingIos SdkAPIs

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