Build and maintain robust backend systems, and care about the developer experience as much as the API design. Worked on SDKs, frameworks, or platforms where DX is a first-class concern. Understand software modelling: schemas, validation, migrations, and how to evolve systems without breaking user workflows. Experience integrating AI into developer workflows, or being excited by the idea of GitHub bots and automated code assistance. Care about quality engineering practices: testing, observability, and shipping code that others can extend safely. Approach problems from the developer’s perspective. Pragmatic: re-architect fundamentals while still delivering incremental value. Contribute across the stack, backend first, but willing to work on UIs or tooling. Mentor peers through design reviews, pairing, and sharing knowledge openly.