At Amazon, Principal Engineers are both visionary leaders and hands-on builders. As Amazon's most senior individual contributors, Principal Engineers work on our hardest problems. While many companies this size take their foot-off the gas pedal, at Amazon, it's still Day 1. This startup mentality, however, does not admit the luxury of a conservative approach. Principal Engineers are asked to venture beyond comfortable approaches to pioneer new spaces, and inspire others as to what's possible. We are looking for architects and hands-on builders, who are highly attuned to the technical realities of building and operating high-scale systems for services and data. A Principal Engineer should have strong technical judgment and influential skills to facilitate discussions for business-critical designs. The perfect candidate will be able to operate at the Director, VPs and SVP level as a key technical adviser. They should be able to provide both architectural guidance and detailed technical direction while nurturing a continuous delivery culture.