Duolingo Logo

Duolingo

Staff iOS Engineer, App Builds

Reposted 23 Days Ago
Be an Early Applicant
Hybrid
New York, NY
178K-240K Annually
Senior level
Hybrid
New York, NY
178K-240K Annually
Senior level
As a Staff iOS Engineer at Duolingo, you'll optimize iOS build processes, mentor junior engineers, and contribute to application infrastructure development.
The summary above was generated by AI

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 Area 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. We have several different teams you can join responsible for application performance, architecture, and build tooling and infrastructure.


 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
  • Ability to relocate to New York, NY

 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

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. The actual salary within the range is determined by many factors including but not limited to, skills, experience, education, and internal equity.

Salary Range:
$177,700$240,400 USD

Take a peek at how we care for our employees' holistic well-being with our benefits here.

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 [email protected].

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.

By applying for this position your data will be processed as per the Duolingo Applicant Privacy Notice.

Sign up for job alerts here.

Top Skills

Bazel
Ios Sdk
Swift
Tuist

Similar Jobs

49 Minutes Ago
In-Office
Wellsville, NY, USA
24-43 Hourly
Entry level
24-43 Hourly
Entry level
Artificial Intelligence • Big Data • Healthtech • Information Technology • Machine Learning • Software • Analytics
As a Field Physical Therapy Assistant, you will provide treatment and instruct patients in exercises while adhering to the care plan. Responsibilities include observing patient responses, reporting changes, and collaborating with the healthcare team.
Top Skills: Cpr Certification
51 Minutes Ago
Remote or Hybrid
US
172K-240K Annually
Senior level
172K-240K Annually
Senior level
Information Technology
Lead and mentor a team of Enterprise Architects, overseeing the development of business applications and aligning them with the enterprise architecture vision.
Top Skills: Cloud-Based ApplicationsDatabasesMiddlewareMobile ApplicationsWeb Services
51 Minutes Ago
Remote or Hybrid
US
Senior level
Senior level
Information Technology
The role involves designing, integrating, and delivering ServiceNow solutions, mentoring engineers, managing client expectations, and providing technical leadership.
Top Skills: Servicenow

What you need to know about the Los Angeles Tech Scene

Los Angeles is a global leader in entertainment, so it’s no surprise that many of the biggest players in streaming, digital media and game development call the city home. But the city boasts plenty of non-entertainment innovation as well, with tech companies spanning verticals like AI, fintech, e-commerce and biotech. With major universities like Caltech, UCLA, USC and the nearby UC Irvine, the city has a steady supply of top-flight tech and engineering talent — not counting the graduates flocking to Los Angeles from across the world to enjoy its beaches, culture and year-round temperate climate.

Key Facts About Los Angeles Tech

  • Number of Tech Workers: 375,800; 5.5% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: Snap, Netflix, SpaceX, Disney, Google
  • Key Industries: Artificial intelligence, adtech, media, software, game development
  • Funding Landscape: $11.6 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Strong Ventures, Fifth Wall, Upfront Ventures, Mucker Capital, Kittyhawk Ventures
  • Research Centers and Universities: California Institute of Technology, UCLA, University of Southern California, UC Irvine, Pepperdine, California Institute for Immunology and Immunotherapy, Center for Quantum Science and Engineering

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account