Senior Backend Engineer — AI & Ads Platform

Duolingo; New York (NY); On-site; USD 183,000 - 247,000; Full time

Job summary

Duolingo is seeking a Backend Engineer to design, build, and operate reliable, scalable systems across Ads and AI tooling teams. You’ll own substantial backend components, collaborate with product, design, data science, ML, and operations, and drive projects from design through production.

Ideal candidates have a CS degree, strong data structures/algorithms, and experience in Java, Python, or Kotlin, plus solid DB knowledge. Competitive salary range in USD is highlighted in the posting.

Qualifications

• Bachelor's degree in Computer Science or related field.
• Strong 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

Java

Python

Kotlin

Data structures

Algorithms

Software design

Education

Bachelor's degree in Computer Science

Tools

OpenTelemetry

Grafana

Prometheus

Datadog

Job description

Duolingo is seeking a Backend Engineer to design, build, and operate reliable, scalable systems across Ads and AI tooling teams. You’ll own substantial backend components, collaborate with product, design, data science, ML, and operations, and drive projects from design through production.

Ideal candidates have a CS degree, strong data structures/algorithms, and experience in Java, Python, or Kotlin, plus solid DB knowledge. Competitive salary range in USD is highlighted in the posting.