HR & Payroll Management System

The Challenge

A growing organization was running payroll and compliance tracking through a legacy system that could no longer be safely modified, with payroll processing taking multiple days each cycle.

Discovery

Discovery documented exactly how the legacy system calculated payroll, including undocumented edge cases, before any replacement logic was written.

The Solution

A modernized HR platform covering attendance, payroll calculation, and approval workflows, migrated in stages while the legacy system remained the source of truth until cutover was verified.

UI/UX Approach

Role-based views separating employee self-service, manager approvals, and HR administration.

Implementation

Migrated module by module (attendance, then payroll calculation, then approvals), running old and new systems in parallel during each transition.

Security

Role-based access, full audit logging on payroll and HR actions, encrypted storage of sensitive employee data.

Deployment

Deployed in a containerized environment with staged rollout across departments.

Objectives

• Replace the legacy payroll process without disrupting an active payroll cycle
• Automate attendance-to-payroll calculations
• Add role-based approval workflows for HR actions
• Maintain a full audit log for compliance purposes

System Architecture

• React frontend for HR and employee self-service
• Node.js API layer with the payroll calculation engine
• PostgreSQL for employee, attendance, and payroll records
• Dockerized deployment for consistent environments

Technologies

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