Comprehensive Hospital Management Software Development

I am seeking a seasoned developer to create a Hospital Management Software (HMS) that encapsulates the entire journey of a patient within a hospital. This includes but is not limited to: patient visit, admission, billing, inpatient department (IPD), outpatient department (OPD), inter-departmental communication, pharmacy management, role-based logins, inventory management, management information system (MIS), and discharge.

Key Modules:
- Patient Management: This module should track patient records, facilitate appointment scheduling, and monitor medical history. It should include all necessary sub-modules.
- Billing and Payments: This should encompass invoice generation, processing of insurance claims, and integration of online payment systems.
- Inventory Management: Keeping track of hospital inventory seamlessly and efficiently.
- Role Based Log In: Ensuring secure access based on user roles.
- Inter Departmental Work Flow: Promoting efficient communication and coordination among various hospital departments.

Ideal candidates should be proficient in React JS and have prior experience developing complex management software, preferably in the healthcare sector. A keen understanding of hospital workflows and needs will be a significant advantage.