Everyone’s seen AI spin up a fresh app from scratch. But what about your well-established codebase, with years of decisions, conventions, and real users? Brian Casel argues that experienced developers have the biggest advantage in the AI era, and shows why the best teams are blurring the lines between developer, designer, and product manager—and what that means for us as builders.

---

Brian Casel is the founder of Builder Methods, where he hosts training and community for developers adopting AI in their product workflows. His focus is on helping experienced developers bring a product mindset to AI-first building — leveraging their technical and product skills rather than starting from scratch with every new tool. Brian brings longtime Ruby, Rails, and SaaS experience, having built and sold multiple software products over the past decade. He’s passionate about helping builders navigate this new era with confidence and craft.