This is an age-old problem in IT. Some new technology and/or fad comes along, and bunches of organizations suddenly want an expert in it. It's impossible to fi

This is an age-old problem in IT. Some new technology and/or fad comes along, and bunches of organizations suddenly want an expert in it. It's impossible to find enough experienced in the new field because it's so new and/or growing too fast. But the HR department or technically-inexperienced managers don't understand this and complain to politicians et. al. of a "shortage". (Those in know have seen the pattern multiple times.) The answer is simple: find a similar field and accept a learning curve for the employee to transition. If you need something quick, hire a consultant to both move the project along and to mentor the new employee.