Experience must also include three (3) years: (i) developing and maintaining Java-based services and applications in a retail production environment; (ii) working with enterprise retail systems including Inventory & Sourcing, Order Management Systems (OMS), and carrier-based Delivery Tracking systems to enable accurate order routing, fulfillment visibility and post-purchase experiences; (iii) coordinating large-scale releases for critical retail systems, including planning and executing deployments across peak sales periods (e.g., holiday or promotional events), while ensuring system availability and rollback readiness; and (iv) facilitating and supporting testing phases-unit, functional, end-to-end, and performance testing-for customer-facing and operational retail systems such as eCommerce order flows, warehouse integrations and payment systems, and addressing defects to maintain production integrity. Duties include: (i) developing and maintaining Java-based services and applications in a retail production environment; (ii) building data pipelines to integrate systems, enable business intelligence, and apply business logic; (iii) monitoring, maintaining, and optimizing cloud-native services for performance and reliability; and (iv) providing after-hours on-call support for business-critical issues.