OpenSimulator Grid & Virtual Currency Developer

Project Description:
I am looking for a developer with solid experience in OpenSimulator (OpenSim) to configure a complete, secure, and stable grid in grid mode, without using DreamGrid.
The project must include support for PBR materials, integration with Vivox voice chat, and the development of a custom virtual currency system with transaction monitoring in a database.

Technical Requirements:
- Installation and setup of the latest OpenSim version in grid mode (Robust server separated from simulators)
- Full database integration (MySQL or MariaDB)
- HyperGrid access enabled and tested
- Creation of admin avatar and welcome region
- Support for PBR (Physically Based Rendering) if available

Vivox voice configuration, including:
- Assistance in requesting Vivox credentials from Unity
- Integration of Vivox credentials into OpenSim

Implementation of a custom in-world currency system, including:
- Custom name and symbol
- Full transaction logging to database
- Balance control and (if possible) admin panel

Preferred Skills (Bonus):
- Experience with WifiPages or custom web-based portals
- Ability to build an economy dashboard or currency analytics panel
- Server security configuration (firewall, SSL, automated backups)
- Support for multiple simulators and grid scalability

Additional Information:
- This grid will be used for private and commercial purposes

Budget:
Negotiable based on experience and scope