Infrastructure Support Manager

We’re looking for an Infrastructure Support Manager to maintain, optimize, and scale our core voice infrastructure and networks. This includes managing VoIP systems such as FreeSWITCH, OpenSIPS, and Kamailio, handling SIP trunk configurations, and ensuring backend stability for reliable, high-quality calls.

The ideal candidate is not only a hands-on engineer but also a strong collaborator who thrives on solving complex infrastructure problems, improving uptime, and ensuring performance. If that sounds like you, we’d love to meet you.

Key Responsibilities

• Maintain, monitor, and optimize FreeSWITCH, OpenSIPS, Kamailio, and other core VoIP infrastructure
  
• Troubleshoot and resolve SIP trunk issues to ensure consistent, high-quality voice service
  

• Build and maintain secure, scalable SIP server configurations (IVRs, routing rules, extensions, call queues)
  

• Interface with customers and internal teams to resolve VoIP- and network-related issues
  
• Support Product and Engineering teams with voice infrastructure needs and implementations
  

• Collaborate with Operations and Growth teams on CRM and call center tool integrations
  

• Ensure network configurations (firewalls, NAT, QoS) support optimal VoIP performance
  
• Diagnose call quality issues using tools like Wireshark, RTCP, and SIP debugging utilities
  

• Implement secure call handling through SIP authentication, encryption, and compliance standards
  

• Keep infrastructure documentation up to date and accessible
  
• Implement best practices for upgrades, patch management, and performance tuning
  

• Contribute to cost-effective international routing strategies and billing systems
  

Key Success Metrics

• Issue Resolution Time – Reduction in VoIP and network troubleshooting time
  
• Uptime & Availability – Maintaining >99.9% availability for all voice infrastructure
  

• Process & Documentation – Ensuring infrastructure documentation is always current and clear
  

Requirements

• 4+ years of experience with VoIP technologies (FreeSWITCH, OpenSIPS, Kamailio, Asterisk, etc.)
  
• Proven expertise in SIP trunking, PBX systems, call routing, and SIP protocol handling
  
• Strong networking knowledge: TCP/IP, NAT, VPN, QoS, firewalls
  
• Experience with tools like Wireshark, RTCP, and SIP command-line debugging tools
  
• Scripting and automation experience is a strong plus
  
• Familiarity with VoIP integrations with CRM and call center tools (e.g., Salesforce, HubSpot)
  

• Strong skills in documentation, incident management, and cross-functional communication
  

Benefits

Why Join Us?

• Build infrastructure powering thousands of business conversations across Africa
  
• Take ownership in a hands-on, high-impact engineering role
  
• Join a fast-growing company with a strong tech and performance culture
  
• Competitive salary + performance-based incentives
  

• Be part of the team shaping how African SMEs communicate
  

Work  Style: Hybrid (2 office days per week)