Reddit CTO: Why Your Startup Culture Breaks at 150 People
In this excerpt, the Reddit CTO explains how the size of a startup team influences its internal culture and social cohesion. He describes three informal size thresholds: around a dozen people, where the group feels like a family and members know each other's personal stories; around fifty people, where individuals still encounter each other but lose shared context and awareness of each other's work; and beyond roughly 150 people, where the organization reaches the Dunbar number and members become effectively strangers to one another. The speaker suggests that these transitions create distinct cultural challenges for startups as they scale, highlighting the need for intentional cultural practices once a company surpasses the 150‑person mark.
