Windows Business Management Desktop Application

I need a Windows desktop application that pulls our core business processes into one simple, professional interface that non-technical staff can use without special training. You will handle everything—from defining the database schema all the way to final testing—then hand over a fully working EXE/installer plus complete, well-commented source code.

Essential modules
• Finance & Accounts Management
• Employee / HR Management
• Sales & Customer Records
• School Managemet
• Data Entry and Management
• User Login and Role-Based Access
• Database Integration
• Backup and Restore functionality

Employee / HR Management must include
• Payroll Management
• Attendance Tracking
• Performance Evaluation
• Employee profile management with personal and employment details
• Leave Management

Key expectations
• Clean, modern UI with logical navigation and quick search/filter across records
• Robust print and PDF reporting throughout all modules
• Reliable backup/restore routine to safeguard data
• Role-based security so each user only sees what they need
• Smooth installation on current Windows versions without extra configuration

I am open to discussing the exact features, technology, database, timeline and budget with the selected developer.