Full-Time

Senior iOS Software Engineer

Updated on 3/14/2025

Duolingo

Duolingo

1,001-5,000 employees

Language learning platform with gamified lessons

Compensation Overview

$148.8k - $274.6kAnnually

+ Equity Compensation + World-Class Benefits

Senior

New York, NY, USA

Category
IOS Development
Software Engineering
Required Skills
Data Structures & Algorithms
iOS/Swift
Requirements
  • 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
Responsibilities
  • 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
Desired Qualifications
  • A minimum of 5 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

Duolingo provides a language learning platform that engages users through gamified, bite-sized lessons. The app is designed for a wide range of users, from those learning for personal enjoyment to professionals and students needing new languages for their careers or studies. Users can access the core features of the app for free, while premium subscriptions offer an ad-free experience and additional functionalities. Duolingo stands out from its competitors by being the most downloaded education app ever and the top-grossing education app in 2019. The company's goal is to make high-quality education accessible to everyone, and it has received recognition for its positive workplace culture and contributions to the education sector.

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

Pittsburgh, Pennsylvania

Founded

2011

Simplify Jobs

Simplify's Take

What believers are saying

  • Increased demand for language learning apps due to remote work and globalization.
  • Growing interest in gamified learning experiences among younger demographics.
  • Expansion of AI-driven personalized learning experiences in education technology.

What critics are saying

  • Increased competition from AI-driven language learning platforms threatens market share.
  • Recent marketing stunt may alienate users attached to the original brand identity.
  • Introduction of AI features could lead to privacy concerns among users.

What makes Duolingo unique

  • Duolingo offers 98 courses across nearly 40 languages, a broad language selection.
  • The platform uses gamified, bite-sized lessons to enhance user engagement.
  • Duolingo's freemium model allows free access with optional premium features.

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Benefits

Medical, dental, and vision for employees as well as eligible partners and dependents

Mental health benefits such as therapy sessions and coaching to support you to be your best self

Fertility benefits to support your family planning journey

Fully paid parental and adoption leave

Fully paid subscription to Care.com and paid backup days for dependents and your fur family

401(k) with generous match and immediate vesting

20 days of PTO, with two additional weeks off for winter break

Yearly professional development stipend

Transportation reimbursement for however you get to work

Lunch prepared daily by our in-house chefs

Annual international retreat for all full-time employees

On-site gym and massages

On-site game/break room

Growth & Insights and Company News

Headcount

6 month growth

-2%

1 year growth

-2%

2 year growth

-2%
MarketBeat
Mar 10th, 2025
Taika Capital LP Makes New $2.70 Million Investment in Duolingo, Inc. (NASDAQ:DUOL)

Taika Capital LP makes new $2.70 million investment in Duolingo, Inc. (NASDAQ:DUOL).

MarketBeat
Mar 8th, 2025
Cookson Peirce & Co. Inc. Makes New $20.49 Million Investment in Duolingo, Inc. (NASDAQ:DUOL)

Inc. makes new $20.49 million investment in Duolingo, Inc. (NASDAQ:DUOL).

MarketBeat
Mar 4th, 2025
New York Life Investment Management LLC Invests $1.28 Million in Duolingo, Inc. (NASDAQ:DUOL)

New York Life Investment Management LLC invests $1.28 million in Duolingo, Inc. (NASDAQ:DUOL).

Business Insider
Feb 28th, 2025
Duolingo killed its cartoon owl mascot for another 'unhinged' marketing stunt - except in one country

Duolingo killed its cartoon owl mascot for another 'unhinged' marketing stunt - except in one country.

Aibase
Feb 28th, 2025
Duolingo Launches AI Features to Boost English Learners' Performance

Beyond the video call feature, Duolingo has introduced other AI-powered tools within the app, making the learning process more engaging and fun.