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Madre Integrated Engineering

L3 Network Engineer

Madre Integrated Engineering Salta, Salta, Argentina

Human Resources Services · 501-1,000 employees

3 d ago
network-engineer Senior (5-10 yrs) Full-time Argentina
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About the role

The L3 Network Engineer will provide expert-level support for Voice/VoIP systems and lead technical projects including system upgrades and integrations. They are responsible for maintaining infrastructure, managing vendor relationships, and ensuring system security through regular maintenance and audits.

What they look for

Cisco IPT VoIP SIP Voice Gateways ESBC UCCE UCCX ISDN PRI Teams Direct Routing Troubleshooting Linux ITIL Project Management Cisco HCS vSphere

Requirements

Candidates must hold a Bachelor's degree and possess CCIE or CCNP Collaboration certifications. A minimum of 7 years of experience in Cisco IPT environments and deep knowledge of VoIP protocols and troubleshooting are required.

Full description

  • 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
  • CCIE / CCNP Collaboration certification (mandatory)
  • 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

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