? We’re hiring: Junior L1 Voice Support Engineer – SIP, SBC and VoIP

HookZ India Private Limited is looking for a junior engineer with hands-on experience in SIP trunking, VoIP and enterprise voice environments.

? Location: Chennai or Thanjavur (Hybrid)

? Experience: 1–2 years

? Employer: HookZ.ai India Private Limited

Essential requirement:

Candidates must have 1–2 years of practical experience supporting or troubleshooting SIP trunks. Applications without relevant SIP trunking experience will not be considered.

Key responsibilities:

• Provide L1 support for AudioCodes and Ribbon SBCs, voice gateways and SIP infrastructure

• Monitor SBC health, alarms, availability and SIP trunk status

• Troubleshoot failed calls, one-way or no-way audio, call routing, codecs, DTMF and caller ID issues

• Review basic SIP traces, packet captures, SBC logs and call detail records

• Investigate network, DNS, NTP, firewall, NAT and TLS-related issues

• Support Microsoft Teams Direct Routing connectivity

• Record and manage incidents in line with SLA and escalation procedures





• Escalate complex issues to L2/L3 engineers with complete diagnostic information

• Assist with maintenance, configuration backups, upgrades and health checks

What we’re looking for:

• Diploma or bachelor’s degree in Telecommunications, IT, Computer Science, Electronics or a related discipline

• 1–2 years of hands-on SIP trunking experience

• Valuable understanding of SIP, SDP, RTP, TCP/UDP, TLS and VoIP call flows

• Basic knowledge of IP networking, VLANs, routing, NAT, DNS and firewalls

• Exposure to AudioCodes or Ribbon SBCs is strongly preferred

• Familiarity with Wireshark and SIP analysis tools

• Clear communication, documentation and troubleshooting skills

• Willingness to participate in shift or on-call support when required

Exposure to Microsoft Teams Direct Routing, Genesys Cloud, NICE CXone, Amazon Connect or Zoom Phone would be an advantage.

This is an excellent opportunity for an

📌 Support Engineer (Chennai)
🏢 HookZ.ai
📍 Chennai