Fresh Jobs at PressOne Africa

Role Overview

• The Infrastructure Support Manager will be responsible for maintaining, optimizing, and scaling our core voice infrastructure and networks. This includes supporting VoIP systems (FreeSWITCH, Opensips, Kamailio), SIP trunk management, and backend configurations critical to call reliability.
• The ideal candidate will not only be a hands-on engineer but also a strong collaborator—working with other teams to solve routing issues, enhance performance, and ensure our infrastructure supports business goals. If you thrive on solving complex infrastructure problems and care deeply about uptime, clarity, and performance, this role is for you.

Key Responsibilities

Infrastructure Reliability & VoIP System Support

• Maintain, monitor, and optimize FreeSWITCH, Opensips, Kamailio, and other core VoIP infrastructure.
• Troubleshoot and resolve SIP trunk issues to ensure high call quality.
• Build and maintain scalable and secure SIP server configurations (IVRs, routing rules, extensions, call queues).

Collaboration & Support

• Interface with customers and internal teams to resolve network and VoIP-related issues.
• Support product and engineering teams with voice infrastructure requirements and implementation.
• Collaborate with operations and growth teams on CRM and call center software integrations.

Network Performance & Security

• Ensure network configurations (firewalls, NAT, QoS) support optimal VoIP performance.
• Diagnose call quality issues using tools like Wireshark, RTCP, and other SIP debugging utilities.
• Ensure secure handling of calls through SIP authentication, encryption, and compliance.

Documentation & Optimization

• Maintain up-to-date documentation for infrastructure configurations and processes.
• Implement best practices for upgrades, patch management, and performance tuning.
• Contribute to cost-effective international routing and billing systems.

Key Success Metrics

Your performance will be measured by:

• Issue Resolution Time – Reduce VoIP and network issue resolution time across the business.
• Uptime & Availability – Maintain >99.9% availability for all voice infrastructure.
• Process & Documentation – Ensure critical infrastructure documentation is always current and accessible.

Requirements

Qualifications & Experience

• 4+ years experience in VoIP technologies (FreeSWITCH, Opensips, Kamailio, Asterisk, etc.)
• Proven experience with SIP trunking, call routing, PBX systems, and SIP protocol handling.
• Strong networking knowledge: TCP/IP, NAT, VPN, QoS, and firewall configuration.
• Experience with tools like Wireshark, RTCP, and CLI-based monitoring/debugging.
• Solid scripting experience and familiarity with automation tools is a plus.
• Hands-on experience integrating VoIP with CRMs or call center tools (e.g., Salesforce, HubSpot).
• Strong documentation, troubleshooting, and incident management skills.
• Ability to communicate technical concepts clearly across teams.

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Role Overview

• At PressOne Africa, quality is non-negotiable. We're looking for a QA Software Engineer who is passionate about quality and automation. Your role will be to ensure that every release is stable, secure, and user-friendly. You'll work closely with software engineers and product managers to define test strategies, write automated tests, and identify bugs before they reach our users. If you have a sharp eye for detail and enjoy thinking through every possible scenario, this role is made for you.

Key Responsibilities

Testing & Quality Assurance

• Develop and execute comprehensive test plans for new features, enhancements, and bug fixes
• Perform manual and automated testing across web and mobile platforms
• Identify, document, and track bugs and inconsistencies

Automation & Process Improvement

• Write and maintain automated test scripts for critical user flows
• Suggest improvements to QA processes and tools to ensure faster, more reliable testing

Collaboration & Communication

• Collaborate with developers during sprint planning and code reviews to ensure test coverage
• Work closely with the Product team to clarify requirements and edge cases
• Communicate testing outcomes and risks clearly and promptly

Performance & Regression Testing

• Conduct performance, stress, and regression testing for major releases
• Ensure backwards compatibility and consistent performance across updates

Product Knowledge & Customer Experience

• Understand the customer journey and anticipate common issues
• Test with empathy to simulate real-world usage and user behavior

Key Success Metrics

Your performance will be measured by:

• Bug Detection Rate – Percentage of critical issues caught before production
• Test Coverage – Breadth of manual and automated test scenarios
• Release Quality – Reduction in post-release bugs and customer-reported issues
• Deployment Velocity – Impact of QA on faster, safer releases

Requirements

Qualifications & Experience

• 3+ years of experience in QA Engineering, preferably in a fast-paced tech environment
• Strong experience with automated testing tools and frameworks- especially playwright and pytest
• Familiarity with API testing, mobile testing, and cross-browser compatibility
• Ability to write clear bug reports and detailed documentation
• Experience with CI/CD pipelines and release management practices 
• Experience with frontend frameworks like Vue.js and Django/Python. 
• Strong attention to detail, analytical skills, and a user-first mindset