1) When first starting a company, the team is one of the most important things for investors. It's important to have the right co-founders and hire people who are capable of handling adversity.
2) An ideal early founding team configuration is a CEO plus 4-5 engineers. It's also important to have diversity in skills and backgrounds on the founding team.
3) As the company grows, functional roles like VP of Engineering, Product, Sales, and Marketing should be established to better divide work and make people accountable. An office manager can also provide important administrative support.