At incident.io, building a great developer experience is crucial for maintaining pace and delivering value to customers. Key strategies include shortening feedback loops through hot-reloading setups, speedy CI, quick code reviews, and Slack previews. Additionally, using strongly-typed languages like Go and TypeScript helps catch errors early on. Building reliable abstractions as reusable building blocks also accelerates feature development. Lastly, making bug-finding easy by leveraging realistic dev environments, traces, sourcemaps, and structured data in logs and errors contributes to faster issue resolution.