L3 Network Engineer

Madre Integrated Engineering; Doha; On-site; QAR 180,000 - 300,000; Full time

Job summary

Madre Integrated Engineering in Doha, Qatar, is seeking an experienced Voice/VoIP engineer for a full-time role. You will provide L3 escalation support, configure ISDN PRI and SIP CPEs, and lead technical projects for new systems and upgrades.

The role requires 7+ years with Cisco IPT/UCCE/UCCX, experience with Ribbon and Nuera ESBCs, SIP/VoIP, troubleshooting with captures/traces/CDRs, and ITIL/PM knowledge; on-call support is included.

Qualifications

• 7+ years supporting Cisco IPT or similar platforms – UCCE/UCCX, voice gateways, ESBCs, Cisco HCS, and vCenter/vSphere.
• Strong knowledge of ISDN PRI, E1/T1, SIP, VoIP, H.323, RTP; hands-on with Ribbon and Nuera ESBCs/gateways and Teams Direct Routing.
• Deep-dive troubleshooting using SIP captures, call traces, and CDRs; knowledge of dial plans, trunks, DIDs, and call routing; basic Linux (RHEL/CentOS).
• ITIL and Project Management knowledge; contact center experience is an advantage.

Responsibilities

• Provide L3 escalation support as the Voice/VoIP subject matter expert; install, configure, troubleshoot, and maintain ISDN PRI and SIP CPEs, voice gateways, ESBCs, and their NMS/EMS platforms
• Lead technical projects for new systems and upgrades; run POCs, interoperability testing, and integrations with third-party communication platforms
• Work with backend teams, vendors, and IT to resolve customer issues; manage vendor relationships and SLAs
• Perform scheduled maintenance, tuning, and firmware security checks; follow Incident and Change Management processes; document support procedures for audit
• Support capital budget planning (BOM/BOQ) and cost optimization; provide after-hours on-call support

Skills

Cisco IPT/UCCE/UCCX

Voice gateways

ESBCs (Ribbon/Nuera)

SIP/VoIP

ISDN PRI

SIP traces

Linux (RHEL/CentOS)

ITIL

PM/Project management

Education

Bachelor's Degree in Computer Science, Electronics & Telecommunication, or IT

Job description

Madre Integrated Engineering | Full time

• Provide L3 escalation support as the Voice/VoIP subject matter expert; install, configure, troubleshoot, and maintain ISDN PRI and SIP CPEs, voice gateways, ESBCs, and their NMS/EMS platforms
  
• Lead technical projects for new systems and upgrades; run POCs, interoperability testing, and integrations with third-party communication platforms
  
• Work with backend teams, vendors, and IT to resolve customer issues; manage vendor relationships and SLAs
  
• Perform scheduled maintenance, tuning, and firmware security checks; follow Incident and Change Management processes; document support procedures for audit
  
• Support capital budget planning (BOM/BOQ) and cost optimization; provide after-hours on-call support
  

Requirements

• Bachelor's Degree in Computer Science, Electronics & Telecommunication, or IT
  
• 7+ years supporting Cisco IPT or similar platforms — UCCE/UCCX, voice gateways, ESBCs, Cisco HCS, and vCenter/vSphere
  
• Strong knowledge of ISDN PRI, E1/T1, SIP, VoIP, H.323, RTP; hands-on with Ribbon and Nuera ESBCs/gateways and Teams Direct Routing
  
• Deep-dive troubleshooting using SIP captures, call traces, and CDRs; knowledge of dial plans, trunks, DIDs, and call routing; basic Linux (RHEL/CentOS)
  
• ITIL and Project Management knowledge; contact center experience is an advantage