Enterprise & business systems: Experience building for or integrating enterprise or business-critical systems (eCommerce, CRM, ERP, or similar), and comfort working with REST/GraphQL APIs, webhooks, and middleware. Own integrations: Build and maintain integrations between Shopify, Salesforce, NetSuite (ERP), BigQuery (data warehouse), and our internal middleware layer using REST/GraphQL APIs, webhooks, and event-driven patterns.