Does your company have a website or social media of some sort we can look at?
What are you offering- you have some seriously extensive expectations easily reaching senior level development, what are you offering in compensation? I assume there is a contract of some nature?
Most people even in high-end development aren’t using State Tree yet and are still using behavior trees, or are using a mix of the two. Are you certain you’re comfortable with something as experimental as State Tree for this level of production, especially given how buggy they are?