£400 per day
Outside Spy
London, UK
Salary: £400 per day Reference: 116224 We're currently working with our client to seek an Integration Engineer to design and build the middleware layer connecting Shopify with enterprise backend systems such as OMS, ERP, and WMS. This role focuses on technical integration and data flow rather than front-end or theme development. You’ll work closely with their backend engineers (primarily Java-based) to ensure robust, scalable, and observable data exchange between Shopify and other platforms. This is a 6+ month contract position paying £400 per day outside IR35 with 3 days onsite in Paddington, London Responsibilities: Develop and maintain custom Shopify app logic and middleware services for system-to-system integration. Design and implement data flows using REST/GraphQL APIs, webhooks, and event-driven patterns (e.g. Kafka). Define and manage data contracts, schema mappings, and transformation logic between Shopify and backend systems. Collaborate with...