Sr. Infra Ops Engineer

Sr. Infra Ops Engineer

Full-Time On-site
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Responsibilities

  • Administer and engineer Cisco CUCM (clusters), Unity Connection, IM&P (if applicable), and related UC components.
  • Configure and manage:
    • Partitions/CSS, device pools, regions/locations, SRST
    • Endpoints (Cisco IP phones, softphones), firmware loads, and device templates
    • Support moves/adds/changes (MAC) and resolve complex L2/L3 voice incidents.
    • Perform dial plan design/optimization, calling search space design, and normalization.
    • Support migration activities to Genesys (e.g., Genesys Cloud CX or Genesys Engage depending on environment):
      • Telephony integration and call routing design
      • Testing (inbound/outbound flows, DTMF, recording, transfers, consult, conferencing)
      • Collaborate with contact center teams on cutover planning, agent readiness, and issue triage.
    • Deliver integration/migration to Vonage services (UCaaS, SIP trunking, or communications APIs as applicable):
      • SIP trunk provisioning/interop, codec negotiation, TLS/SRTP design (where used)
      • Call quality baselining and post-cutover stabilization
    • Drive network readiness for voice/contact center migrations:
      • QoS (DSCP marking, trust boundaries), WAN/LAN readiness, jitter/latency/packet-loss analysis
      • Firewall/NAT design, SIP ALG considerations, SBC connectivity requirements
      • DNS, DHCP (Option 150), NTP, routing, multicast (if used)
      • Use tools for troubleshooting and quality monitoring (e.g., packet captures, CUCM RTMT, SBC logs, voice MOS).
    • Create and execute:
      • Migration runbooks, cutover plans, rollback plans, and test scripts
    • Lead or support:
      • UAT, pilot migrations, production cutovers, and hypercare
      • Stakeholder & Vendor Management
    • Work with:
      • Network/Security/Identity teams, service desk, field support
      • Communicate progress, risks, dependencies, and mitigation plans clearly.

Qualifications

  • 10+ years enterprise experience in Cisco UC/Voice engineering.
  • Strong hands-on experience with:
    • Cisco CUCM, SIP trunking, dial plan/routing, device provisioning
    • Voice gateway technologies (e.g., CUBE, ISR voice gateways) and/or SBC concepts
  • Proven experience supporting at least one of:
    • Genesys contact center migration/integration (Cloud or on-prem)
  • Excellent troubleshooting skills across:
    • SIP call flows (INVITE/200 OK/ACK/BYE), codec issues, one-way audio, DTMF, transfers
    • Network fundamentals for voice (QoS, NAT/firewalls, routing, DNS/DHCP/NTP)

Sr. Infra Ops Engineer employer: INNOVATE IT AUSTRALIA

Join a dynamic and innovative team as a Mobile Automation Technical Test Lead, where your expertise will be valued and your contributions recognised. Our company fosters a collaborative work culture that prioritises employee growth through continuous learning opportunities and mentorship, all while being located in the vibrant Asia-Pacific region. Enjoy competitive benefits and the chance to lead impactful projects that shape the future of mobile automation testing.

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Contact Details:

INNOVATE IT AUSTRALIA Recruitment Team