Senior iOS Engineer, Builds Infrastructure

Duolingo; New York (NY); On-site; USD 148,000 - 275,000; Full time

Job summary

An innovative learning platform is seeking a Senior iOS Engineer to enhance its infrastructure and tools for iOS development. In this role, you'll collaborate with talented engineers to optimize build processes and ensure efficient scaling across a large team. You'll have the chance to represent your team in architectural discussions, mentor fellow engineers, and explore cutting-edge tools like Bazel and Tuist. If you're passionate about education and technology and want to make a significant impact, this is the perfect opportunity for you.

Qualifications

• 6+ years of iOS software engineering experience with scalable production software.
• Deep expertise in Swift and native iOS development.

Responsibilities

• Build and maintain foundational infrastructure for iOS development.
• Evaluate and optimize iOS build processes and CI pipelines.

Skills

Swift

iOS Development

Concurrency Primitives

Engineering Fundamentals

Tools

Bazel

CI Pipeline

Tuist

Job description

Senior iOS Engineer, Builds Infrastructure

Our mission at Duolingo is to develop the best education in the world and make it universally available. But we’ve got more left to do — and that’s where you come in!

Duolingo is the world's most popular learning app. Beyond our core learning product, we also offer English proficiency testing with the Duolingo English Test, and are bringing new subjects into the Duolingo app, where people can develop their Math and Music skills.

We are passionate about educating our users, making fact-based decisions, and finding innovative solutions to complex problems. We offer meaningful work, limitless learning opportunities, and collaboration with world-class minds. Come brighten your life and over half a billion more!

About the role:

As an iOS engineer in our Client Platform Infrastructure Teams you will have the opportunity to build all the necessary infrastructure and tools to ensure Duolingo's iOS development can continue to be fast and efficient at scale.

Client Builds and Infrastructure Team:

• As an engineer on the Client Builds and Infrastructure team you’ll be responsible for evaluating and setting the direction for our iOS builds. This includes explorations into Bazel, modularization strategies, and CI pipeline changes to optimize build times across 70+ iOS developers.

You will...

• 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

You have...

• 6+ years of iOS software engineering experience, 1-2+ years developing scalable production software and an excellent command of engineering fundamentals
• Deep expertise in Swift and concurrency primitives
• Proficiency in native iOS development using standard tools and frameworks

Preferred candidates will have...

• 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

Duolingo is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.

We post a multi-level salary range for all of our roles.

This is not inclusive of the rest of our awesome portfolio that includes equity compensation and world-class benefits. Our salary ranges are the same for all US locations. Your recruiter can share more details about the range for a specific level during the hiring process.

Salary Range:

$148,800 — $274,600 USD

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