Hire for DNA first, then work experience.
When I hire web developers, their personal DNA is the most important consideration. While experience is important, the bigger predictor of success is someone's innate DNA and how it fits your company. Are drive, determination, persistence, curiosity, important to you culture? Or, are you more low-key and relaxed about time management and deadlines? Whatever characteristics make up your culture, you want to ensure that the web developer will fit in.
For example, a brilliant web developer who has worked at a large financial institution may not do well at a startup. Why? A startup typically requires traits like versatility, adaptability, risk-taking and a self-starter personality, but these may be less important at a large company.