A stunt coordinator, usually an experienced stunt performer, is hired by a TV, film or theatre director or production company for casting stunt performers.
In many cases, the stunt coordinator budgets, designs and choreographs the stunt sequence to suit the script and the director's vision.
It is a stunt coordinator's responsibility to create an environment where open dialogue among cast & crew involved in stunts can occur (i.e., concerns and problems can be resolved without fear of retaliation, bullying or belittlement).
They should ensure that adequate rehearsals and planning occur prior to filming on set, and also ensure that performer credentials are vetted.
[1] There are two Primetime Emmy Awards for Outstanding Stunt Coordination:[2]