At the startup phase, you need someone that can take on an important part of your business and own it, pushing it forward under your guidance.
Thus, you have to determine what type of person you are looking for:
1. Identify positions needed
2. Prioritize who you need to hire first
3. Consider hiring vs. a partnership (with another service provider)
4. Consider hiring an intern, a part-timer, a contractor, or a full time employee