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# iOS Developer

- **Company:** Duolingo
- **Location:** New York, NY, United States (Remote available)
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** IOS Applications, Code Review, IOS SDK, Uikit, Ios Frameworks, Firebase, Backend, Core Data, Performance Monitor, Core Animation, Video Streaming, Restful APIs, Api Management
- **Published:** September 27, 2026
- **Apply:** https://www.juju.com/job/16_4732947d19

## About the Role

* 3+ years of professional software experience in iOS app development.
 * Shipped at least one iOS app professionally
 * Proficient with Swift, IOS frameworks (UIKit, CoreData, Core Animation, etc.) and IOS SDK performance tools.
 * Experience with Experience with RESTful APIs & other API integrations
 * Knowledge of video streaming and optimization
 * Familiarity with Firebase or other backend solutions.
 * Experience with integrating advanced analytics, animations, and gamified features.

## Description

This is a fully remote position, open to candidates worldwide. As the sole engineer/dev, you'll need to take on full-stack responsibilities ensuring smooth front-end and back-end interactions.

You will…

 * Take full ownership of developing, launching, and maintaining the iOS app
 * Build rapid prototypes for internal testing 2-3x/week
 * Develop an asynchronous game experience where users solve and send math problems to friends.
 * Implement analytics to track student progress and help users identify weak areas for improvement.
 * Take ownership of formatting and integrating question banks into the app.
 * Build a seamless content delivery system for a TikTok-style mobile video course.
 * Optimize the app for a highly engaging, fast, and smooth learning experience.
 * Ensure the app is scalable, maintainable, and bug-free through rigorous testing and code reviews.

Who you are:

You're not just an executor-you're an innovator. You thrive on creativity, constantly pushing boundaries with crazy, forward-thinking ideas. You don't wait for direction-you help define what's next with a strong sense of urgency.


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