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Technical Architecture

OpenATS is built using a modern, modular architecture powered بالكامل by open-source technologies. Each component has a clear responsibility while working together as a unified system.

OpenATS System Diagram

Overview​

  • Frontend (Next.js) – Handles UI, user actions, and RBAC-based access
  • Backend (Express.js) – Core services and business logic
  • Database (PostgreSQL) – Structured data storage
  • Object Storage (S3 Compatible) – File storage (resumes, assets)
  • Auth Layer (Asgardeo / OAuth) – Authentication and verification
  • Realtime (WebSocket) – Live updates and communication

Frontend​

Built with Next.js, it manages user interactions, authentication flow, and communicates with backend services via APIs.

Backend​

The Express.js service handles core modules such as pipeline management, candidate processing, analytics, and communication.

Data & Storage​

  • PostgreSQL stores structured data like candidates and pipelines
  • S3-compatible storage is used for resumes and file assets

Authentication​

Authentication is handled using Asgardeo.

  • Supports secure login and user verification
  • Uses OAuth / OIDC standards
  • Enables role-based access control (RBAC)

Communication​

  • REST APIs connect frontend and backend
  • WebSockets enable real-time updates

Deployment Patterns​

OpenATS supports flexible deployment options:

  • Docker-based Deployment – Recommended for local and production setups
  • Frontend Deployment – Vercel, Cloudflare Pages
  • Backend Deployment – Render or similar platforms
  • Full Platform Deployment – WSO2 Choreo (deploy frontend & backend as services/web apps)