Intermediate Application Developer - eCommerce (Shopify) Platform Support

About the role

UPS is looking for an Intermediate Application Developer to support, enhance and evolve its customer-facing eCommerce apps. The role covers hands-on development, system integration, troubleshooting and support of a cloud-hosted, high-availability application. You will work on a full eCommerce workflow covering merchant onboarding, order processing, policy creation and payment handling.

Key responsibilities

• Develop and maintain application features with React.js (front-end) and Node.js (back-end).
• Support integrations with multiple enterprise APIs for merchant, order, policy and payment processing.
• Handle and monitor webhook events, including troubleshooting failed transactions.
• Use Redis for caching and Cosmos DB for storing merchant and order data.
• Deploy and support code through an Azure CI/CD pipeline.
• Maintain secure authentication flows, including OAuth and session-token-based communication.
• Help maintain reliability across multi-region active-passive deployments and improve performance, scalability and resiliency.

Required profile

• 3+ years of experience in application development.
• Experience with the Shopify platform, including app development, webhooks, APIs and extension frameworks.
• Ability to troubleshoot issues across distributed systems.

Required skills

• React.js, Node.js, HTML, CSS and API development.
• Familiarity with cloud platforms (Azure preferred) and CI/CD pipelines.
• NoSQL databases and caching technologies.
• Authentication and authorization patterns.
• Nice to have: event-driven architecture and webhook processing, Java-based backends.