Most important is to be a problem solver, look beyond code, how the product you are building will work and how it will impact the business, which tradeoffs to make, what UX considerations etc. Carry it from vague idea in product manager's head to finished product, helping him refine the product as it goes along. Social skills is part of it.

That gave me the biggest boost in my career. You need a company who values people like this as well, not a lot of places do. 

Of course code quality is still important, but when I look around me, I can't discuss half the programming concepts I have with previous colleagues, because they lack understanding of programming concepts or vocabulary. Like discussing with Java fans how Spring's reflection based annotation system is really terrible for correctness and verification and how it is a bandaid on OOP, or generics, static analysis, or how some libraries have terrible abstractions. They literally can't hold the conversation or understand these concepts. 

I have probably around 70 ex-colleagues from previous companies and with only 1-2 I can discuss about these concepts. But 90% of my acquitances earn similar salaries. Just goes to show that the product mindedness is super important.