Tier 3 Network Engineer

Fixed Mobile Telecoms; Gauteng; On-site; ZAR 600 000 - 800 000; Full time

Job summary

A leading telecom services provider in South Africa is seeking an experienced Senior Network Operations Engineer. The successful candidate will design, deploy, and maintain network services, including firewalls, WAN, and LAN. This role emphasizes proactive monitoring and supporting Tier 1 and 2 teams. Candidates with a strong background in advanced troubleshooting and network management are encouraged to apply.

Qualifications

• Experience in designing and managing network infrastructure.
• Ability to handle escalations and complex incidents effectively.
• Proven skills in proactive monitoring and issue resolution.

Responsibilities

• Design, deploy, and support network services including WAN and LAN.
• Take ownership of escalations and provide advanced troubleshooting.
• Monitor systems to prevent issues before they impact customers.
• Document processes and changes in detail for knowledge sharing.
• Mentor Tier 1 and Tier 2 engineers and contribute to service improvements.

Skills

Advanced troubleshooting

Network design and deployment

Firewall management

Telephony systems knowledge

WAN and LAN expertise

Job description

WHAT WE DO

FMT is a Digital Managed Infrastructure Service Provider, delivering connectivity, security, voice, and cloud solutions that are customized, delivered as‑a‑service, and backed by proactive management and support. Our Everything‑as‑a‑Service (XaaS) model helps reduce capital expenditure, simplify IT operations, and support whatever's next.

HIGHEST‑PERFORMANCE IP TRANSIT

Built for Carriers, ISPs, and WISPs: High‑performance IP Transit via six major undersea cables: WACS, EASSy, Seacom, Equiano, SAT‑3 / SAFE, and ACE.

WHO WE SERVE

We partner with ambitious enterprises, telcos, channel partners, and public sector organisations that refuse to stand still. Whether you're running multi‑site operations, delivering essential services, or scaling a mission‑critical environment, we keep you connected, consistent, and ready for what's next.

WHAT SETS US APART

We’re not just tech experts – we’re people who care. People who get excited about solving real problems. People who take pride in the unseen systems your business depends on. Because your success isn't just a metric – it's our motivation.

At FMT, innovation happens where heart meets expertise.

Everything we do is delivered with precision, dedication, and relentless focus – from design to deployment, to long‑term support.

ABOUT THE ROLE

We are seeking a highly skilled Senior Network Operations Engineer to join our team.

The purpose of this role is to design, deploy, maintain, monitor, support, and manage changes across all customer and core services within the company’s portfolio, such as firewalls, telephony, WAN, and LAN. In addition, this role is responsible for assisting with new deployments, as well as upgrades, downgrades, and structured change requests on existing services.

You will be a key escalation point for Tier 1 and 2 engineers, ensuring issues are resolved quickly and accurately, while also helping to shape improvements that drive stability and customer success.

KEY RESPONSIBILITIES

• Design, deploy, maintain, monitor, support, and manage changes for customer and core services, including firewalls, telephony, WAN, and LAN.
• Take ownership of escalations from Tier 1 and 2 engineers, applying advanced troubleshooting to resolve complex incidents.
• Deliver and assist with new deployments, service activations, upgrades, and downgrades.
• Plan, document, and execute changes under formal change control processes, including risk assessment, stakeholder communication, approval, and rollback planning.
• Proactively monitor systems and communication platforms to identify, investigate, and mitigate issues before they impact customers.
• Work closely with vendors and internal technical teams to resolve critical faults and ensure service continuity.
• Maintain accurate, detailed documentation of troubleshooting, resolutions, deployments, and changes for reference and knowledge sharing.
• Provide regular updates to customers, vendors, and internal stakeholders to ensure transparency and trust.
• Contribute to process and service improvements by identifying recurring issues and implementing long‑term solutions.
• Mentor and support Tier 1 and 2 engineers, helping to build technical capability within the team.
• Ensure all customer engagement, calls, tickets, or escalations are handled professionally, courteously, and with urgency.