Network Engineer

We're on the hunt for a technically-minded, carrier-savvy Voice/Telecommunications Support

Engineer to join our team. You'll be the frontline detective, problem solver, and system tuner —

ensuring smooth operation of our core voice systems and integrations across our global

footprint.

This is a hands-on role supporting both internal operations and external customers via our

Atomic Solution Centre, with a focus on VoIP, SIP routing, carrier interconnects, softswitch

functionality, and end-to-end service delivery.

Key Responsibilities

• Provide Level 2/3 support for voice and UCaaS services including SIP trunking, DID provisioning, number porting, Teams Direct Routing, and Hosted PBX.
• Manage and troubleshoot call routing logic, carrier interconnects, and softswitch configurations.
• Work closely with global voice and SMS carriers to manage interconnects, test routing paths, and resolve downstream quality issues.
• Configure and monitor routing policies, codecs, call detail records (CDRs), and fraud mitigation parameters.
• Maintain and update system-wide infrastructure components (e.g. SBCs, SIP proxies, load balancers).
• Assist with monthly billing reconciliations, call rating issues, and reporting anomalies.
• Support infrastructure updates and software upgrades in production and staging environments.
• Contribute to the customer knowledge base and internal documentation repository (e.g. Atomic Solution Centre).
• Participate in a rotating on-call schedule for incident response and after-hours escalations.

What You'll Bring

• 3+ years in a technical telco, VoIP, or UCaaS support role.
• Strong understanding of SIP, RTP, DNS, NAT traversal, and voice codec behaviour.
• Experience with softswitch environments (e.g. SippySoft, FreeSWITCH, Kamailio, OpenSIPS).
• Familiarity with billing systems (e.g. rate plans, mediation, CDR reconciliation).
• Previous involvement with carrier provisioning, global numbering plans, and LCR.
• Proficiency using Wireshark or similar tools for SIP diagnostics.
• Comfortable with Linux-based systems and basic scripting for automation/troubleshooting.
• Excellent communication and customer engagement skills.

Nice to Have

• Exposure to Microsoft Teams Direct Routing and Operator Connect configuration.
• SMS gateway knowledge and Sender ID registration practices.
• Experience with fraud detection platforms and IP reputation scoring tools.
• Familiarity with REST APIs for service integration and automation.

Training & Certifications

We're looking for candidates who've invested in their technical growth and understand the

intricacies of modern voice and telecom networks. Preferred certifications include:

SIP/VoIP Technologies:

• Ribbon, Oracle, or Audiocodes SBC certifications
• SIP School Certification (SSCA)

Networking & Infrastructure:

• Cisco CCNA/CCNP
• Juniper JNCIA
• CompTIA Network+ or equivalent

Cloud/Unified Comms:

• Microsoft Teams/365 Administrator certifications (e.g., MS-700)
• AWS Certified Cloud Practitioner or Solutions Architect (nice to have)

Security/Fraud Mitigation (bonus):

• CompTIA Security+
• Experience with STIR/SHAKEN, IP filtering, or voice firewall systems

If you haven't ticked every box — but you're sharp, resourceful, and eager to learn — don't let

that stop you. We invest in upskilling the right people.

Monitoring & Tools

Experience with the following tools and platforms will be highly regarded:

• VoIPmonitor for SIP call tracing, MOS scoring, and packet analysis.
• Grafana for real-time system monitoring and dashboard visualisation.
• AWS services including CloudWatch, EC2, S3, and networking components for infrastructure management and scalability.
• Basic scripting for automation (Bash, Python) and log parsing.