Your first port of call should be equality. Your job postings are quite rightly designed to filter out people that lack the skills you are after. However they

Your first port of call should be equality. Your job postings are quite rightly designed to filter out people that lack the skills you are after. However they also serve as an unwitting barrier. One thing I have seen that is successful is actively going out and recruiting people who are different from you. Universities are a great source of untapped talent. More importantly they haven't been beaten down by classism/sexism/*ism. Being surrounded by people who look, act and sound like you is a boring boring life.