About this role
Senior Lead Network Engineer
Job description: Job Title: Senior Lead Voice Engineer Skills: QoS, Cisco Unified Communications, SIP Protocol, Wireshark, Solarwinds/Manage Engine, Voice Over IP (VoIP), Cisco Webex, Cisco Routers,
Certification • CCNA Voice/CCNP Collaboration (Must) • Avaya, Genesys, or other VoIP certifications • ITIL Foundation Experience:10 to 12 years
Education: Bachelors degree in computer science, Telecommunications, or related field.
Responsibilities • Deploy and configure Cisco Unified Communications Manager (CUCM), Unity Connection, UCCE, UCCX, CUBE, and SIP trunking. • Implement voice gateways, dial plans, QoS policies, and session border controllers (SBCs). • Integrate Microsoft Teams, Zoom Phone, or other cloud-based telephony solutions. • Troubleshooting & Support (L2/L3): • Resolve call routing issues, codec mismatches, latency, jitter, and packet loss in VoIP networks. • Debug SIP, H.323, MGCP, and RTP/RTCP protocols using Wireshark, SIP, or other tools. • Provide L3 escalation support for voice-related incidents and outages. • Monitoring & Optimization: • Monitor voice quality metrics (MOS, Jitter, Latency) using tools like SolarWinds, Cisco Prime, or IR Prognosis. • Optimize QoS policies for voice traffic prioritization. • Perform capacity planning and upgrades for VoIP infrastructure. • Security & Compliance: • Implement voice security measures (TLS, SRTP, firewall policies for VoIP). • Ensure compliance with PCI-DSS, HIPAA, or other regulatory standards (if applicable). • Collaboration & Documentation: • Work with network, security, and cloud teams for cross-functional projects. • Maintain network diagrams, SOPs, and change management records. • Provide 24/7 network and security support as required. Mandatory • Cisco UC Suite (CUCM, CUC, UCCX, CUBE, IMP) • SIP, H.323, MGCP, RTP/RTCP protocols • Voice Gateway Configuration (ISDN, PRI, FXO/FXS, SIP Trunking) • QoS for Voice (DSCP, LLQ, AutoQoS) • Experience with Cisco Jabber, Webex, and MRA deployments. • Troubleshooting with Wireshark, RTMT, etc. • Webex, Contact Center • Session Border Controllers (AudioCodes, Oracle SBC, Cisco CUBE) • Basic Networking (VLANs, Routing, Firewall ACLs for VoIP) • Manage UCS Server with patching • Strong understanding of network infrastructure, design, and troubleshooting. • Excellent communication skills in English (both verbal and written). • Ability to work efficiently in a team-oriented environment with high self-motivation. • A customer-focused mindset with strong delivery service ethics. • Good understanding of Monitoring tools such as SolarWinds, Grafana, Prometheus, etc. • Willingness to work in a 24/7 support window. • Good understanding of the ITSM processes.