Senior Backend Engineer — Scale High-Traffic APIs (Equity)

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

Job summary

Duolingo in New York, NY is seeking a Senior Backend Engineer to build and operate reliable, scalable systems across Ads, Score, Time Spent Learning and Observability domains. Join a cross-functional team, own end-to-end backend services from design to production, collaborate with product, design, data science, and engineering to ship high-impact features.

We value strong fundamentals, ownership, and a role that combines engineering excellence with impactful education technology, with

Qualifications

• Bachelor's 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.

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 and algorithms

Software design

Java

Python

Kotlin

Backend development

Distributed systems

APIs

Education

Bachelor's degree in Computer Science or related technical field

Tools

OpenTelemetry

Grafana

Prometheus

DataDog

Job description

Duolingo in New York, NY is seeking a Senior Backend Engineer to build and operate reliable, scalable systems across Ads, Score, Time Spent Learning and Observability domains. Join a cross-functional team, own end-to-end backend services from design to production, collaborate with product, design, data science, and engineering to ship high-impact features.

We value strong fundamentals, ownership, and a role that combines engineering excellence with impactful education technology, with