HR Management System

Overview

At Devvista, I designed and developed a complete HR automation system that combines biometric attendance tracking with payroll, leave, and loan management — all tailored to simplify HR processes for small and mid-sized organizations. The system uses a ZKTeco biometric device integrated via a C# API for precise attendance logging, with an intuitive front-end and powerful backend logic to automate salary calculations, tax deductions, leave approvals, and loan tracking. I developed, tested, and deployed the entire solution on a Linux server, ensuring both security and scalability for the client.

Challenges

Automatically track employee attendance via biometric input
Handle leave requests, salary slips, and loan disbursements
Be accessible via browser, mobile-friendly, and secure
Run on a Linux-based hosting environment

Solution

End-to-End Software Development: I built the complete solution from scratch — designing the database schema, developing front-end and back-end modules, testing features rigorously, and deploying it on a secure Linux server environment.
ZKTeco Biometric Integration: Integrated with the ZKTeco fingerprint device using a C# API that communicates attendance logs in real time with the central PHP backend.
Automated Payroll Logic: The system calculates net salary based on attendance, approved leaves, tax rules, and loan deductions. Dynamic reports are generated for payroll summaries, pay slips, and tax forms.
Leave & Loan Management: Employees can apply for leave or request loans. The admin panel supports tracking balances, approvals, and installments.
Linux-Based Deployment: After successful testing, I configured and deployed the application on a Linux server, ensuring speed, uptime, and data security.

Features

Biometric Attendance: Uses ZKTeco device with C# API for precise, real-time tracking of employee check-ins and check-outs.
User-Friendly Interface: Clean dashboard and navigation designed for non-technical users to easily manage HR tasks.
Payroll Management: Automatically computes salaries, taxes, and deductions based on attendance and leave data.
Leave Management: Employees can apply for different types of leave, which are tracked, logged, and approved via the system.
Loan Tracking: Records loan issuance, schedules repayments, and auto-deducts installments from monthly salaries.
Secure & Scalable: Hosted on a Linux server with role-based access control and regular backups to ensure long-term reliability.

Technologies

Front-end: HTML, CSS
Back-end: PHP, JavaScript, AJAX
Biometric API: ZKTeco + C#
Database: MySQL
Hosting: Linux VPS with LAMP stack

Results

90% reduction in HR processing time
Zero data discrepancies in salary calculations
100% uptime post-deployment on the Linux server
Employees accessed self-service features for leaves and pay slips