First, I want to see contributions to flagship opensource projects. If you are using opensource stacks and pushing the envelope, you will eventually have to fix

First, I want to see contributions to flagship opensource projects. If you are using opensource stacks and pushing the envelope, you will eventually have to fix bugs or implement new features. Landing patches means the applicant is able to meet the high bar for contributions (code quality, documentation, tests). Then I want to see side projects using the same stack that will be used internally by the applicant. You can tell a lot about someone by his code style.