HR Portal Development

I need a comprehensive HR portal focused on employee records management. The portal should include:

Essential Features:
- Personal details tracking
- Attendance and leave management
- Salary and benefits management

Reporting Capabilities:
- Employee performance reports
- Attendance and leave reports
- Salary and benefits reports

Ideal Skills and Experience:
- Experience in developing HR management systems
- Strong database management skills
- Proficiency in generating detailed reports
- Knowledge of data privacy and security regulations

Please provide examples of similar projects completed and estimated timelines.