In an era where AI tools are increasingly integrated into development workflows, enhancing developer experience (DevEx) for both human engineers and AI coding agents is crucial. The text discusses how a company invested in optimizing feedback cycles by improving tools such as build, codegen, and linting, achieving speedups of up to 95%. They switched from traditional tools like ESLint to faster alternatives like Biome, reducing type-checking times significantly, and even built a custom OpenAPI generator, which accelerated API client generation by over 200 times. These improvements not only save engineering time but also enhance iteration confidence, enabling faster and more efficient workflows. The company emphasizes that investing in fast and effective tooling is essential for leveraging AI, fostering a culture of continuous improvement, and maintaining high productivity levels as the team expands.