🧠 RFC Skillhub – Backend API

This is the backend of RFC Skillhub, a scalable internal platform designed to track employee training and certifications. It’s built using NestJS with a microservices architecture, and deployed to Azure Kubernetes Service (AKS) via GitHub Actions CI/CD pipelines.

The backend exposes RESTful APIs through an API Gateway and handles all communication via RabbitMQ.

⚙️ Architecture Overview

• 5 Microservices:
  • auth – JWT authentication and user management
  • courses – Courses catalog management
  • certif – Certification sessions
  • todo – Personal To-Do list tracker
  • api-gateway – Main API router (validates JWT, forwards requests)
• Asynchronous communication via RabbitMQ
• PostgreSQL for auth, MongoDB Atlas for other services
• Each service is containerized and deployed independently via manifests

🛠 Tech Stack

• Framework: NestJS (Node.js + TypeScript)
• Communication: RabbitMQ (event-driven)
• Auth & Routing: JWT + API Gateway
• Databases:
  • PostgreSQL (auth microservice)
  • MongoDB Atlas (courses, certifs, todo)
• Containerization: Docker
• CI/CD: GitHub Actions
• Deployment: Azure Kubernetes Service (AKS)
• API Gateway: Built-in with NestJS and secured with AuthGuard

🔐 Security Features

• JWT-based user authentication
• Bcrypt-hashed passwords
• Role-based access for admin vs trainee
• API Gateway verifies tokens before forwarding

🚀 Deployment Pipeline

Each microservice has:

• Its own Dockerfile
• Its own deployment manifest (YAML)
• GitHub Actions CI/CD pipeline for:
  • Building Docker images
  • Pushing to Azure Container Registry (ACR)
  • Deploying to AKS using kubectl

🧪 Testing

• Manual API testing done via Postman
• Microservice communication verified via RabbitMQ dashboard
• Token generation and route access verified via console + frontend integration

📄 License

This backend was developed for educational and internal company use. All rights reserved to RFC.