Building a company involves the crucial task of assembling a team, which becomes particularly challenging when hiring for roles outside one's expertise. The author, with a background in software engineering, describes a system used at Heap to tackle this issue, emphasizing the importance of conducting thorough research to understand the role, identifying potential pitfalls, and constructing an interview process that emulates the job. This approach includes leveraging external expertise for areas beyond the team's knowledge and ensuring that the candidate can effectively communicate their approach and trade-offs during the interview. The post also highlights the significance of hiring individuals who can build out a new function from scratch, emphasizing the need for candidates who have seen high-functioning teams before and are eager for leadership opportunities. Additionally, creating a 30-60-90 day plan can help align expectations and ensure that the candidate feels valued and understands their strategic importance. For some central roles, it may be beneficial for the founding team to initially perform the functions to gather valuable market insights before hiring.