500px users may notice new features on our site occasionally, but we put new code into production multiple times a day! How do we ensure that everything works after every change? Good question! I’m a member of the quality assurance (QA) team at 500px — we play a big part in this. Here are some of the development techniques we use to ensure a smooth sail.First of all, code changes are reviewed by other developers before they even reach the QA team. This often catches bugs and corner cases early i...