You will have many responsibilities relating to the design, development, and testing of device software. We love prototyping new ideas to explore the frontier of what is possible, but our success is measured by our ability to productize and ship highly-polished features to millions of Apple Watch users. Responsibilities include:- Working with designers to turn vague ideas into meaningful prototypes, and demoing them to stakeholders.- Architect systems that are extensible, adaptable, and stand the test of time.- Profile and optimize cutting-edge features to run well on a low-powered, highly-constrained device.