Duolingo

Duolingo is hiring multiple full-time engineering roles. Mission: develop the best education in the world and make it universally accessible. Culture is engineering-driven, friendly, and data-driven. Tech stack includes frontends: Swift, Kotlin, TypeScript; backend: Python, Kotlin, Postgres, Dynamo; infra: AWS, k8s, Terraform. Hiring for roles such as Senior Engineering Manager (Monetization), Senior Android Engineer, Engineering Manager (Chess), Senior iOS Software Engineer. Positions are onsite in New York and Pittsburgh. Base salary ranges noted above; roles include equity and perks like free lunch, 2-week winter break, and 20 days of flexible time off.