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National Oilwell Varco
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Unified Communications Engineer

Unified Communications Engineer

National Oilwell Varco

4 - 7 years

6 - 9 Lacs

kochi

Posted:None| Platform:

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Skills Required

performance tuning qos voip network security routing sip vlan microsoft cisco wireshark

Work Mode

Work from Office

Job Type

Full Time

Job Description

The Unified Communications Engineer plays a critical role in the configuration, optimization, and support of the organization s voice and collaboration infrastructure, spanning cloud platforms (8x8, Fuze, Teams) and legacy systems (ShoreTel). This role requires hands-on expertise in VoIP routing, SIP, call flow design, and network interaction especially in hybrid environments. Engineers work closely with network, security, and operations teams to ensure performance, availability, and security.

Key Responsibilities

Engineer and maintain hybrid communication systems including Direct Routing for Teams, 8x8/Fuze voice, and ShoreTel PBX.
Configure and troubleshoot SIP trunking, dial plans, call policies, and call routing logic across platforms.
Conduct packet captures and diagnose call quality issues using tools such as Wireshark and SBC logs.
Collaborate with network engineers to implement or fine-tune QoS, VLAN tagging, and DSCP marking for voice traffic.
Participate in system migrations from legacy PBX to UCaaS platforms.
Build and maintain SBC configurations (Ribbon, AudioCodes) for Teams Direct Routing or SIP trunk integration.
Enforce UC security policies including TLS/SRTP, encryption standards, and E911 compliance.

Required Qualifications

4 7 years of UC or VoIP engineering experience in an enterprise environment.
Strong understanding of VoIP protocols (SIP, RTP, SRTP) and network concepts (QoS, TCP/IP, VLANs).
Experience with Microsoft Teams Voice, 8x8, Fuze, and ShoreTel Director/Connect.
Ability to interpret call flow traces, configure SBCs, and apply performance tuning recommendations.

Preferred Certifications

Microsoft Certified: Teams Voice Engineer Associate
8x8 Certified Engineer (ACSE)
Cisco CCNP Collaboration
CompTIA Security+
AudioCodes/Ribbon SBC Certification

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National Oilwell Varco

Oil & Energy

Houston

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Unified Communications Engineer