Establishing a DevEx team in a high-growth company | Willie Yao (Notion, Airbnb)

Developer experience (DevEx) serves as a critical foundation for engineering teams navigating hypergrowth, shifting from reactive, grassroots efforts to a proactive, customer-first organizational pillar. Willie Yao, Head of Infrastructure at Notion and former Airbnb engineering leader, emphasizes that treating internal engineers as customers allows organizations to build trust, improve velocity, and reduce attrition. Scaling challenges, such as the transition from monolithic architectures to service-oriented models, require intentional guardrails and robust observability to prevent distributed complexity. Rather than relying solely on technical solutions, successful DevEx initiatives prioritize cultural alignment, where leadership champions developer productivity as a core business value. By implementing feedback loops, listening sessions, and incremental architectural improvements, organizations can effectively manage technical debt and empower engineers to deliver consistent value without being blocked by inefficient systems or fragmented tooling.