Software Engineer II, Backend
Core
Build backend services and infrastructure for Duolingo's Ads team to support ad serving, mediation, demand, and in-product ad formats.
Role type
Senior Backend Engineer (Ads)
Builds
Ad serving, mediation, demand systems, and in-product ad formats
Domain
EdTech / Advertising
Deliverable
production ML models | product features | infrastructure
Required skills
Java, Python, Kotlin, data structures, algorithms, software design, database technologies
Preferred skills
high-traffic APIs, public cloud providers, observability (OpenTelemetry, Grafana, Prometheus, DataDog)
Responsibilities
Develop and maintain backend services and infrastructure, lead project priorities and milestones, collaborate with product design and backend aspects
Seniority
Senior, hands-on IC
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