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backend-architecture

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Production-ready Multi-Tenant SaaS Backend architected with NestJS and PostgreSQL. It features robust data isolation (row-level tenancy), RBAC security, JWT authentication, and background job processing with BullMQ. Demonstrates enterprise patterns for scalable Software-as-a-Service applications with clean architecture.

  • Updated Jun 30, 2026
  • TypeScript

Production-grade NestJS boilerplate for regulated industries. Features JWT RS256 with rotation, DB-driven RBAC, Drizzle ORM, and append-only Audit Logging. Security-first architecture for Fintech and Healthtech.

  • Updated Jul 25, 2026
  • TypeScript

An open-source production-ready API Gateway hub architecture featuring multi-tier sandbox endpoints for advanced frontend integration. Configured with Express Node service layers, custom Swagger endpoints, Docker automation, and E2E automation via Playwright frameworks.

  • Updated Jul 16, 2026
  • JavaScript

A production-grade MERN stack laboratory focused on scalable architecture, clean code, system design, and enterprise-level patterns. This repository explores advanced backend design, performance optimization, security, multi-tenancy, and real-world SaaS patterns used in large-scale applications.

  • Updated Feb 1, 2026

A modular backend banking system implementing core banking features such as account management, transactions, authentication, rate limiting, and security best practices. Designed with clean architecture principles and built for learning scalable financial system design.

  • Updated Apr 5, 2026
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