Senior iOS Engineer, App Builds jobs in United States
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Duolingo · 1 day ago

Senior iOS Engineer, App Builds

positionNew York, NY
timeFull-time
remoteOnsite
senioritySenior Level
money$178K/yr - $240K/yr
date6+ years exp

Duolingo is the world's most popular learning app, dedicated to making education universally accessible. As a Senior iOS Engineer, you will build and maintain the infrastructure necessary for iOS development, ensuring efficiency and performance for over 70 developers.

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

Responsibilities

Represent the team in architectural discussions and stakeholder conversations, serving as a bridge between Client Platform and Product feature teams
Work within our Client Platform Infrastructure area to create and maintain the foundational building blocks of our application infrastructure
Foster a culture of engineering excellence and mentor engineers of all experience levels
Explore, prototype, and implement prospective tools for scaling our infrastructure such as diving deep into Bazel migration, Tuist integration, or investigating new platform capabilities

Qualification

IOS software engineeringSwiftNative iOS developmentBazelCI pipelineIOS SDK performance toolsEngineering excellenceTesting best practicesMentoring

Required

6+ years of iOS software engineering experience
1-2+ years developing scalable production software
Excellent command of engineering fundamentals
Deep expertise in Swift and concurrency primitives
Proficiency in native iOS development using standard tools and frameworks
Ability to relocate to New York, NY

Preferred

Knowledge of iOS SDK performance tools and optimization techniques
Experience supporting either Bazel based-projects or large iOS/macOS projects
Experience maintaining a high performance CI pipeline
Deep understanding of testing best practices

Company

Duolingo

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Glassdoor3.9
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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

Benzinga.com
Duolingo Stock Jumps After Bank of America Says It's More Than A Language App
2026-01-06
Sherwood News
Duolingo jumps following BofA upgrade
2026-01-06
Benzinga.com
Duolingo Rides On BofA's Positive Sentiment, Looking At It Beyond A Language App: Growth Score Spikes
2026-01-06
Company data provided by crunchbase