Multi-Vendor Marketplace Development

I’m launching a full-scale online marketplace where third-party sellers can register, create storefronts, and manage their own catalogue, while shoppers enjoy a smooth end-to-end buying experience. The frontend needs to be built in Angular or React, and I’d like the backend engineered with either Java (Spring Boot) or C# (ASP.NET Core)—whichever you feel will deliver the best performance, security, and maintainability.

Core scope
The project covers everything from architecture to deployment: account creation for vendors and customers, product and inventory management, search and filtering, shopping cart, order life-cycle tracking, and a flexible payment module. I have not settled on a specific gateway yet, so I’m open to your recommendation and subsequent integration. Clean RESTful APIs, solid unit and integration testing, and CI/CD pipelines are expected as part of the workflow.

Key deliverables
• React single-page application with responsive design
• Secure authentication & role-based access (vendor, buyer, admin)
• Backend services in Java or C#, fully documented
• Payment gateway integration of our agreed choice
• Postman or Swagger documentation for every endpoint
• Deployment scripts/Docker files for cloud readiness

Acceptance criteria will revolve around feature completeness, code quality, test coverage, and a successful end-to-end demo on a staging environment.

If you’re comfortable owning the stack from database schema to front-end polish, let’s get started—I’m ready to review your approach and timeline.