I started out working on the flagship Square Point of Sale app, building a wide variety of merchant-facing features as well as major infrastructural projects. As a member of the Developer Platform team, I built Square Reader SDK, which allows third-party developers to build apps that take payments using Square hardware. Developers have used this SDK to build everything from order-ahead kiosks to taxi meters to doctor's office check-in terminals, all leveraging Square's payment platform and business services.
I also did stints as an engineering manager on the e-commerce and Point of Sale teams, and for the last year and change, I was an IC on Cash App, working on their commerce initiatives and core functionality.