One of the ways to damage a fast-growing startup is to not have an HR person. But when is the right time to bring someone on? What qualities should you look for? How can you preserve the company culture and energy that got you where you are — while still putting in place the processes that HR requires? Ben Horowitz and a16z’s head of technical talent Shannon Schiltz (Callahan) dive into the world of HR for startups. How does a good HR professional partner with a CEO? When you have to fire someone for the first time … how should it go down?