# Senior Software Engineer

**Company:** [Duolingo](https://hotfix.jobs/companies/duolingo)
**Location:** Beijing, China
**Role:** Backend Engineering
**Salary:** CN¥805k – CN¥1.1M/yr
**Experience:** 5+ years
**Skills:** Java, Python, Kotlin, Data Structures, Algorithms, Software Design, Databases, Backend Services, Public Cloud, APIs, OpenTelemetry, Grafana, Prometheus, Datadog
**Posted:** 2026-08-12

> The Senior Software Engineer will build and maintain backend services and infrastructure supporting Duolingo’s monetization products. The role requires strong software design fundamentals, programming experience in Java, Python, or Kotlin, and familiarity with databases and cloud-based APIs.

## Job Description

## Responsibilities
- Collaborate on software projects spanning product design and backend development.
- Develop, release, and maintain backend services and/or infrastructure.
- Lead individual project priorities and milestones, ensuring consistent delivery.
- Work cross-functionally with product, design, data science, machine learning, and ad operations teams.

## Requirements
- 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.

## Nice to Have
- Industry experience building high-traffic APIs using public cloud providers.
- Experience with observability technologies such as OpenTelemetry, Grafana, Prometheus, or Datadog.

## Compensation and Benefits
- Salary range: ¥804,949–¥1,088,971 CNY.
- Base salary is supplemented by equity compensation.
- Benefits support employees’ holistic well-being.

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