Senior Software Engineer, Backend

Duolingo • New York, NY

3h

About The Position

Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in!
At Duolingo, you’ll join a team that cares about finding innovative solutions to complex technical problems, running countless experiments (300+ at a time!) with our massive user base to make data-driven decisions, and educating our users and employees alike. You’ll have limitless learning opportunities, mentorship and collaboration with world-class minds, and a variety of projects with large scopes — while doing work that’s both fun and meaningful.
Join our life-changing mission to develop education for our half a billion (and growing!) learners around the world.
Below you can find more information about the team we're hiring for:
Social Team:
The Social team is building features to make social interactions a fundamental part of the core Duolingo experience. As an engineer on this team, you will develop social features, own projects from end-to-end, iterate quickly based on experiments, and be a part of big bets that will help drive new rewards and deeper connections. We're looking for engineers who are passionate about building fun, high-quality social experiences.
Math Teaching Team:
The Math Teaching team builds engaging learning experiences that help learners make sense of math. We bring together strong pedagogy, thoughtful design, engineering, and best-in-class AI to create and scale content that makes math approachable for everyone. As an engineer, you'll shape how learners discover new ideas by building new exercise types, imagining new concept-teaching moments, and experimenting quickly to make math intuitive, fun, and effective at scale.
Listening and Speaking Team:
As an engineer on the Listening and Speaking team, you will build long-form learning features that empower learners to achieve proficiency in listening and speaking, skills that are critical for us to teach effectively. We're looking for motivated engineers who are excited to build new features and passionate about providing the best possible education for our users!

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

Nice To Haves

• Industry experience building high-traffic APIs using public cloud providers

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

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level