Duolingo · 2 weeks ago
Senior iOS Engineer
United States
Full-time
Remote
Senior Level
$178K/yr - $240K/yrDuolingo is on a mission to make the best education universally available, and they are seeking a Senior iOS Engineer to join their Core App Performance Team. This role involves improving user experience in the iOS app, collaborating on software projects, and mentoring junior engineers while developing and maintaining native iOS applications.
EducationAppsE-LearningLanguage LearningMobile Apps
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
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
Benefits
Equity compensation
World-class benefits
We will do everything we can within reason to make sure that your interview takes place in an environment that fairly and accurately assesses your skills.
If you need assistance or accommodation, please contact accommodations@duolingo.com.
Company
Duolingo
Duolingo is a language-learning education platform that offers 98 total courses across nearly 40 distinct languages.
Founded in 2011
501-1000 employees
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
73%
Represents job field similar to this job
Engineering and Development
Product Management
Management and Executive
Marketing
Trends of Total Sponsorships
*2026 (48)
2025 (41)
2024 (46)
2023 (36)
2022 (19)
2021 (14)
2020 (17)
Funding
Current Stage
Public CompanyTotal Funding
$183.3MKey Investors
Durable Capital Partners,General AtlanticGeneral AtlanticCapitalG
2021-07-28IPO
2020-11-18Series H· $35M
2020-04-14Series G· $10M
Leadership Team
Luis von Ahn
CEO, co-Founder & Board Member
Severin Hacker
CTO & Cofounder
Recent News
2026-07-14
Company data provided by crunchbase