B2B SaaS Platform

Overview

The B2B Marketplace is a multi-tenant platform that connects business buyers and sellers, supporting product listings, supplier discovery, ordering, and transaction workflows under a single organization-scoped system.

The platform supports tenant-isolated data, role-based access for different organizational personas, integrations with external supplier and payment systems, and per-tenant configuration. Several backend services coordinate around the core marketplace flow, listings, search, orders, and supplier sync, and expose versioned REST APIs that the web application and integration clients consume.

The system is built for scale and operational stability: backend services run in containerized infrastructure on AWS, communicate asynchronously through queues where appropriate, and emit structured logs and metrics that keep the platform observable and reliable as new tenants and integrations are onboarded.

My Contribution

• Built backend services and features for multi-tenant marketplace flows like listings, orders, and supplier sync.
• Implemented tenant-scoped queries and worked with tenant-isolated PostgreSQL schemas.
• Worked on containerized backend infrastructure on AWS and supported deployment workflows.
• Implemented queue-based handoffs between services to improve scalability and resilience.
• Built REST API endpoints with validation and consistent error responses.
• Added structured logging and metrics across services to improve production visibility.