Ask HN: When do you hire UX professionals, and why?

User experience is a large field and can mean many things. I'd like to learn from founders and hiring managers: 1. At what point in your company's development they hire user experience/human factors professionals

2. What you see as the value UX brings to your company/product/service

3. What do those initial UX roles entail

Bonus: Are you hiring? I'd like to amplify your positions to my UX/HFE network.