Staff Product Manager, Core App Experience 

From Duolingo’s posting

... As a Staff Product Manager for our Core App Experience team, you will be responsible for the app-wide systems, states, and shared surfaces that make the app feel coherent for all users. You will partner with peers in engineering and product design to simplify foundational experiences and build frameworks and patterns that make the app easier to use, adapt, and extend. This role will appeal to you if you enjoy: • Building systems that make the app experience better for 58M+ daily users • Balancing investing for the long-term with launches that make the experience better today • Working with PMs across the company to understand their needs, while still holding a high bar for the overall app experience