Senior Backend Engineer, Monetization & High-Traffic APIs

Duolingo; United States; On-site; USD 113,000 - 152,000; Full time

Job summary

Duolingo is seeking a senior backend engineer to advance our monetization platform, building scalable APIs and services that power subscriptions, ads, and in-app purchases. You will collaborate with product, data science, ML, and ad operations to shape the technical direction and deliver high-impact features across global users.

You'll own backend priorities, drive milestones, and ensure robust, observable systems in a fast-paced environment.

Qualifications

• Bachelor's degree in Computer Science or related 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

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

Skills

Data structures & algorithms

Java, Python, or Kotlin

Database technologies

Education

Bachelor's degree in Computer Science

Tools

OpenTelemetry

Grafana

Prometheus

DataDog

Job description

Duolingo is seeking a senior backend engineer to advance our monetization platform, building scalable APIs and services that power subscriptions, ads, and in-app purchases. You will collaborate with product, data science, ML, and ad operations to shape the technical direction and deliver high-impact features across global users.

You'll own backend priorities, drive milestones, and ensure robust, observable systems in a fast-paced environment.