RADIUS Systems

fibertime is a pay-as-you-go uncapped fiber internet solution designed for township markets. Users can instantly access 100mbps fiber internet from the safety of their homes without contracts or installation fees. The service is affordable, with rates starting from R5 a day, and aims to enhance the internet experience for all users.

WHAT WE ARE LOOKING FOR:

fibertime is seeking a RADIUS Systems & DevOps Specialist within the Engineering – Platforms team.

This role is responsible for ensuring scalable, resilient, and secure subscriber authentication and policy enforcementacross fibertime's network platforms. The role owns the reliability, performance, and automation of RADIUS and AAA systems, integrating tightly with databases, OSS/BSS platforms, and network services.

You will play a key role in ensuring our subscriber platforms scale reliably and recover gracefully under load or failure conditions.

WHAT YOU'LL DO (AND LOVE DOING):

RADIUS & AAA Platform Management

• Maintain and operate RADIUS proxies and AAA systems in high-scale ISP environments.
• Ensure high availability, performance, and security of authentication platforms.
• Support subscriber authentication, authorisation, and policy enforcement services.

Systems Integration & Data Management

• Integrate RADIUS platforms with databases and OSS/BSS systems.
• Support data flows between authentication systems, network elements, and customer platforms.
• Assist with troubleshooting complex subscriber and policy-related issues.

Scalability, Resilience & Reliability

• Perform scaling, load, and failure-mode analysis on RADIUS and AAA platforms.
• Design and implement resilience strategies, redundancy, and failover mechanisms.
• Participate in incident response, root cause analysis, and long-term remediation.

Automation & DevOps

• Automate deployments, configuration management, and operational tasks.
• Improve platform consistency, repeatability, and recovery through automation.
• Support CI/CD practices for platform configuration and updates.

WHAT YOU BRING TO THE TABLE:

Experience

• Hands-on experience operating RADIUS and AAA systems in ISP environments.
• Strong experience with Linux systems and databases.
• Experience integrating authentication platforms with OSS/BSS systems.
• Exposure to AWS and/or on-prem infrastructure environments (advantageous).

Technical Competencies

• Strong understanding of subscriber authentication and policy enforcement.
• Experience with scalable, high-availability system design.
• Solid troubleshooting and performance optimisation skills.
• Automation mindset with a focus on reliability and repeatability.

WHY JOIN fibertime?

At fibertime, we're not just building platforms - we're enabling millions of daily connections.

• Real Impact:
   Your work keeps customers authenticated, online, and supported.
• Scale:
   Design and operate platforms that grow with a national network.
• Ownership:
   Take responsibility for critical subscriber systems.
• Growth:
   Work across DevOps, systems, and network platforms.
• Purpose:
   Help close the digital divide through reliable, scalable technology.