Amboras is an AI-native commerce platform that replaces the legacy stack by bundling every merchant tool into one interface powered by an AI agent. Join a fast growing YC P26 startup with 30k users building a direct alternative to Shopify. This Commerce Systems Engineer role offers $150k–$350k compensation plus 0.2%–0.6% equity. You will own critical systems across catalog, checkout, orders, payments, and integrations. This role has a strong preference for experience with platforms such as Medusa, Shopify, or WooCommerce. You will work in a high-ownership, in-office environment in San Francisco.