I spent $20,000 on Devin in a month. Here’s what I learned | Ryan Carson (solo founder)

The shift toward cloud-based AI agents has fundamentally transformed software engineering, requiring developers to evolve into "agent managers" who oversee complex workflows rather than writing every line of code manually. Managing these agents effectively involves structuring tasks into priority-based folders, utilizing automated playbooks for quality control, and maintaining clear, goal-oriented communication. Despite the power of autonomous coding agents, physical, face-to-face interaction with customers remains essential for achieving true product-market fit. While AI can handle significant portions of development, operations, and even hiring assessments, human judgment is still required to define product direction and verify outputs. Ultimately, the most successful builders treat AI agents as a scalable workforce, balancing high-volume automated output with strategic human oversight to maintain quality and business alignment.