Software Engineer II, Backend

Our mission at Duolingo is to develop the best education in the world and make it universally available. Its a big mission and thats where you come in!

At Duolingo youll 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. Youll have limitless learning opportunities mentorship and collaboration with world-class minds and a variety of projects with large scopes while doing work thats 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 were hiring for:

Content Infrastructure:

As a backend engineer on the Content Infrastructure Team youll build features that make up the core backbone of the learning experience on short-form lessons are where learners spend the majority of their time on the app and our teams mission is to build and update infrastructure to enable quick iteration and improve content quality in these sessions.

Youll work on scaling new exercise types that support our learners in practicing speaking or grammar in bite-sized formats as well as re-architecting our infrastructure in other ways to help set our teams up for success in the future. Were looking for engineers who are passionate about designing scalable systems to help improve the quality of our short-form sessions!

Ads:

Duolingos Monetization pillar builds the systems that fund our mission from subscription packaging and advertising to ML-powered personalization. As a Senior iOS Engineer on the Ads team youll work on a product engineering team responsible for growing and scaling Duolingos ads business: high-quality ads that delight learners fit seamlessly into the product experience and meaningfully contribute to our bottom line. The team owns ad serving mediation and demand in-product ad formats and surfaces and more. Youll work cross-functionally with product design data science machine learning and ad operations.

You will...

• 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 were always shipping

You have...

• A Bachelors degree in Computer Science or a 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
• Experience with industry observability technology such as OpenTelemetry Grafana Prometheus or DataDog.

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

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Accommodations: 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 .

Equal Employment Opportunity: 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.

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