Backend Software Engineer (Senior/Staff/Senior Staff)

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!

As a Backend Engineer you will work on building the APIs that power our products and give our learners a best-in-class experience.

Our microservices infrastructure is composed of hundreds of endpoints serving hundreds of millions of requests per day. You will partner with your team members on identifying requirements and designing services that are fast, resilient and cost effective.

You will have ownership over the entire lifecycle of your services and associated infrastructure, and ensure they are always operating well.

Read about our Engineers work on

Below you can find more information about teams we're hiring for

Math Team :

As a Backend engineer on the Math team, you will help build the technology that changes how people around the world learn Math.

The features that you ship will help learners to develop core math skills in a fun, engaging way. We’re looking for engineers who love building new products and features.

Music Team :

As a Backend engineer on the Music team, you will help build the technology that changes how people around the world learn Music.

The features that you ship will help learners to develop core music skills like sight reading and ear training in a fun, engaging way.

Content AI Platform

The Content AI Platform team builds impactful foundational systems used across Duolingo. In this role, you will develop state of the art platforms and infrastructure that are used by various functions to create learning content with AI and provide an excellent learner experience at scale.

Responsibilities

• Collaborate on software projects with product design and backend aspects
• Develop, release, and maintain backend services and / or infrastructure
• Lead individual project priorities, milestones, and ensure we're always shipping

Requirements

• A Bachelor’s degree in Computer Science or related technical field
• Strong competencies in data structures, algorithms, and software design
• Experience programming in Java, Python or Kotlin
• Solid understanding of one or more database technologies

Exceptional candidates will have

Industry experience building high-traffic APIs using public cloud providers

We invest in and support our Duos! This role is eligible for a robust compensation package of base salary, equity, and Duolingo’s world-class benefits.

The starting base salary range for this role is, $148,800 - $274,600. Actual salary may vary based on level, work experience, performance, and other factors evaluated during the hiring process.