Tech Stack & Architecture - Igus HRMS & ATS

Story Line

The platform is built on the proven MERN stack — MongoDB, Express.js, React, and Node.js — chosen for its flexibility, mature ecosystem, and developer velocity. Each layer plays a distinct role in delivering a fast, secure, and scalable HRMS + ATS experience.

On the client side, React renders both the public Career Portal and the internal Admin Dashboard, with Tailwind CSS for styling and Redux for predictable state. All HTTP requests flow over HTTPS through an Express.js gateway that runs JWT-based authentication and role middleware before routing into domain services.

Node.js services handle business logic — auth, jobs, candidates, questionnaires, AI scoring, notifications — and persist to MongoDB through Mongoose ODM. File uploads go to object storage, emails fire through an SMTP / SES integration, and the whole stack is packaged in Docker containers deployed to a cloud VPS, with CI/CD pipelines automating builds, tests, and rollouts.

Architecture Diagram

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React Frontend

React.js + Tailwind CSS + Redux for a fast, mobile-responsive UI.

Node + Express

REST APIs, JWT auth, role middleware, and request validation.

MongoDB + Mongoose

NoSQL document store with schema validation and flexible structure.

Docker + CI/CD

Containerised deployment to cloud VPS with automated pipelines.