FreeRADIUS Expert Needed for Customization

I'm seeking a seasoned FreeRADIUS Developer to tailor and enhance our FreeRADIUS server's functionalities. Key areas of focus will be:

- Customizing Authentication, Accounting, and Logging capabilities to suit our specific needs.
- Integrating the server with various third-party APIs.
- Implementing custom policy enforcement, which includes setting session limits, establishing access control rules, and managing usage quotas.

Ideal candidates should possess:
- Extensive hands-on experience with FreeRADIUS.
- Proficiency in unlang scripting and understanding of RADIUS attributes.
- Skills in integrating with external systems.
- Experience with DOT compliance is a plus.

Customize and configure the FreeRADIUS server to support:
Authentication using attributes like Framed-IP-Address, NAS-IP-Address, and Calling-Station-Id.
Fair Usage Policy (FUP) implementation.
Bandwidth usage tracking and logging.
Debug, test, and optimize the setup for production readiness.

Skills and Qualifications:
Strong experience with FreeRADIUS (setup, customization, and unlang scripting).
Proficiency in working with RADIUS attributes for authentication and accounting.
Hands-on knowledge of Linux systems (e.g., CentOS, Ubuntu).
Experience with SQL databases (e.g., MySQL, PostgreSQL) and query integration.
Familiarity with NAS devices, networking concepts, and protocols (e.g., DHCP, PPPoE).
Ability to write clean and well-documented code/scripts.
Excellent troubleshooting and debugging skills.