Enterprise Workflow Engine

Enterprise-grade workflow and approval platform designed to demonstrate modern business process automation, approval management, dynamic business rules, and enterprise workflow orchestration.

---

Overview

Many organizations rely on workflow-driven processes such as:

• Employee Promotions
• Transfers
• Procurement Requests
• Salary Revisions
• Vendor Approvals
• Service Requests

This project demonstrates how a configurable workflow engine can support these business processes using dynamic workflows, rule-based approvals, and complete audit tracking.

Enterprise Use Cases

This workflow engine is designed to model common enterprise approval processes found in HRIS, ERP, Procurement, Finance, Compliance, and Internal Business Applications.

Typical scenarios include:

• Employee Promotion Approvals
• Department Transfers
• Compensation Changes
• Procurement Requests
• Vendor Onboarding
• Access Requests
• Policy Exceptions
• Service Desk Escalations

The platform focuses on configurable workflows, dynamic approval routing, auditability, and business-rule-driven process automation.

---

Features

Workflow Designer

Create and manage multi-level approval workflows.

Example:

Employee
→ Manager
→ HR
→ Director
→ Complete

---

Dynamic Rule Engine

Examples:

IF Amount > 100000

THEN Add Finance Director Approval

IF Employee Grade > G10

THEN Add VP Approval

---

Approval Management

• Approve
• Reject
• Return
• Escalate

---

Audit Trail

Track every action performed during request processing.

---

Dashboard & Reporting

Monitor:

• Pending Approvals
• Open Requests
• SLA Compliance
• Workflow Statistics

---

Technology Stack

Frontend

• Angular

Backend

• Node.js
• Express.js

Database

• PostgreSQL

Authentication

• JWT (JSON Web Tokens)

---

Architecture

## Architecture

```text
# Architecture Overview

                 Users
                    │
                    ▼

           Angular Frontend
                    │
                    ▼

            Node.js REST APIs

┌─────────────────┼─────────────────┐ ▼ ▼ ▼

Workflow Engine    Rule Engine     Audit Service

▼ ▼ ▼

Approval Flow     Dynamic Rules    Activity Logs

└─────────────────┼─────────────────┘ ▼

          PostgreSQL Database

                ▼

     Reporting & Dashboard Layer

---

## Solution Overview

![UI Overview](docs/ui-overview.png)

## Application Screens

### Dashboard
![Dashboard](screenshots/dashboard.png)

### Workflow Designer
![Workflow Designer](screenshots/workflow-designer.png)

### Rule Builder
![Rule Builder](screenshots/rule-builder.png)

### Approval Inbox
![Approval Inbox](screenshots/approval-inbox.png)

### Login
![Login](screenshots/login.png)

### Create Request
![Create Request](screenshots/create-request.png)

### Audit Trail
![Audit Trail](screenshots/audit-trail.png)

### User Management
![User Management](screenshots/user-management.png)

---

## Project Structure

```text
enterprise-workflow-engine
│
├── docs
│
├── frontend
│
├── backend
│
├── database
│
├── screenshots
│
└── README.md

---

Business Scenarios Supported

Promotion Request

Employee
↓
Manager
↓
HR
↓
Director
↓
Approved

Procurement Request

Employee
↓
Manager
↓
Finance
↓
Approved

---

Future Enhancements

• Email Notifications
• SLA Escalations
• Workflow Versioning
• LDAP / SSO Integration
• Multi-Tenant Support
• Analytics Dashboard
• Mobile Responsive UI

---

Project Status

🚧 In Development

This project is being built as a demonstration of enterprise workflow automation concepts commonly used in HRIS, approval systems, document management platforms, and internal business applications.

---

Author

Balaji T.

Enterprise Application Modernization Specialist

Focused on enterprise systems, workflow automation, application modernization, business process automation, and cloud transformation.

Upwork Profile: https://www.upwork.com/freelancers/~017c0176f6371f83c1?viewMode=1

Development Roadmap

Phase 1

• Repository Setup
• Architecture Documentation
• UI Mockups

Phase 2

• PostgreSQL Database Schema
• Authentication Framework
• User Management

Phase 3

• Workflow Designer
• Rule Engine
• Approval Processing

Phase 4

• Audit Trail
• Dashboard Analytics
• Reporting

Phase 5

• Cloud Deployment
• CI/CD Pipeline
• Performance Optimization