Ask HN: What is the social responsibility of an engineer in tech organizations?

Given the growth of computing over the last decades, software and hardware engineers (and tech companies generally) have increasingly disproportionate power to have impact.

Edward Snowden is one recent (if extreme) example of an engineer wrestling with what their moral code and related responsibilities. Beyond Snowden, many of the tools at the NSA were built by other engineers who likely saw tremendous value to the protections the NSA provided, or at a minimum did not feel comfortable speaking out.

There are less obviously pernicious examples that are faced by engineers on HN every day. For example, you design hardware at an Internet of Things company and collect data that will be resold to third parties with little transparency to the consumer. Or (more topically) your company creates a tool to subvert TLS for the purpose of tracking user behavior, so that ads can be served or users tracked.

How do you set your own code of conduct/moral principles as an engineer for the products you work on (privacy and beyond)? What inspirations have set these moral principles? How and when do you communicate disagreements to your team?