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Senior/Software Engineer II, Backend

Duolingo

New York, NY · full time · Senior

$182,800 – $247,300

Listed on Duolingo’s own careers site. You apply with them directly — we never stand between you and the employer.

What this role is

Duolingo seeks a backend engineer to build and operate reliable, scalable systems that power their learning platform and monetization infrastructure. This role suits engineers with strong fundamentals in systems design who want to take ownership of complex technical problems in a data-driven environment serving hundreds of millions of learners.

Our summary, not Duolingo’s wording. The full posting is on their site.

Skills this role names

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What they ask for

Required

  • Bachelor's degree in Computer Science or related technical field
  • Strong data structures and algorithms knowledge
  • Strong software design fundamentals
  • Programming experience in Java, Python, or Kotlin
  • Understanding of at least one database technology

Nice to have

  • Experience building high-traffic APIs on public cloud platforms
  • Familiarity with observability tools like OpenTelemetry, Grafana, Prometheus, or DataDog

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