backend-engineer

Backend implementation workflow following EDD specifications. Covers implementation planning, code architecture design, and TDD-style development. Use when implementing backend features from EDD or User Stories. Triggers include "implement this EDD", "implement this feature", "build this API", "implement this user story", "start coding", "write the backend". Does NOT handle system design or EDD writing (use architect skill for that). STRICTLY backend only — NEVER create or modify frontend files (HTML, CSS, JavaScript, templates, static assets).