[8BE] Senior Backend Engineer
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Job Description
We’re building the backend of a white-label B2B e-commerce platform for a leading US promotional products company. The platform powers multiple branded Shopify Plus storefronts. It runs on a fully decoupled microservices architecture on AWS covering Identity, Profile, Order Management, Inventory, Pricing, Catalog, and Marketplace integrations. The existing legacy services stay supported while the migration happens.
What you’ll do:
• Design and build scalable RESTful microservices with ASP.NET Core Web API (.NET 8) and CQRS
• Own core services: Order Management, Inventory, Pricing Engine, Catalog Sync, and Notifications
• Build and consume Shopify Webhooks and REST/GraphQL APIs (Storefront API, Admin API)
• Integrate with external systems such as Amazon SP-API, Walmart Marketplace API, ERP, payment gateways, and tax services
• Work with legacy services where the migration is phased or partial
• Write unit, integration, and BDD tests (xUnit, Reqnroll, FluentAssertions)
• Define API contracts and inter-service communication (SQS, EventBridge) with the Team Lead
• Take part in code reviews and architecture decisions, and help hold the engineering standard
• Support environment setup and infrastructure-as-code with DevOps on AWS
• Join sprint planning, stand-ups, and technical discussions with the client
Requirements
Department: Software Development
Function: Information Technology
Experience Level: Not Applicable