Senior iOS Software Engineer jobs in United States
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Duolingo · 5 hours ago

Senior iOS Software Engineer

positionUnited States
timeFull-time
remoteRemote
senioritySenior Level
money$178K/yr - $240K/yr

Duolingo is on a mission to develop the best education in the world and make it universally available. As a Senior iOS Software Engineer on the Math team, you will help build technology that changes how people learn Math, focusing on developing and maintaining native iOS applications while mentoring junior engineers.

E-LearningEducationLanguage LearningMobile Apps
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Comp. & Benefits
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H1B Sponsor Likelynote

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

Qualification

SwiftIOS developmentAPIs designMultithreaded programmingUnit testingIOS SDK optimizationMentoringCollaborationProblem-solving

Required

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

Preferred

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

Company

Duolingo

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Duolingo is a language-learning education platform that offers 98 total courses across nearly 40 distinct languages.
dateFounded in 2011
location
Pittsburgh, Pennsylvania, USA
people-size501-1000 employees
web-link
https://www.duolingo.com

H1B Sponsorship

Duolingo has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (41)
2024 (46)
2023 (36)
2022 (19)
2021 (14)
2020 (17)

Funding

Current Stage
Public Company
Total Funding
$183.3M
Key Investors
General AtlanticCapitalGDrive Capital
2021-07-28IPO
2020-11-18Series H· $35M
2020-04-14Series G· $10M

Leadership Team

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Luis von Ahn
CEO, co-Founder & Board Member
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Severin Hacker
CTO & Cofounder
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Recent News

Bizjournals.com Feed (2025-11-12 15:43:17)
Duolingo CFO stepping down, company taps former Vimeo exec as replacement
2026-01-13
Business Feed
Duolingo appoints new CFO
2026-01-13
thefly.com
Duolingo CFO Matt Skaruppa to step down, Gillian Munson to succeed
2026-01-13
Company data provided by crunchbase