VoIP Automation Engineer-Broadband / RDK-B

L&T Technology Services; Brentwood; On-site; GBP 55,000 - 90,000; Full time

Job summary

L&T Technology Services Limited (LTTS) is seeking a VoIP Automation Engineer-Broadband / RDK-B with a minimum of 5+ years of hands-on experience in test automation for Voice/VoIP and broadband device validation.

The role involves designing and implementing automation frameworks, validating SIP/RTP signaling, and working with vQUAD, TR-069/TR-104, ACS/TARDIS provisioning, WebPA, and CI/CD pipelines. Strong Linux scripting and Wireshark-based troubleshooting are essential.

Qualifications

• Experience in Voice/VoIP end-to-end testing.
• Familiar with SIP call-flow basics and troubleshooting.
• Linux shell scripting and API automation.
• Experience with vQUAD and automation frameworks (e.g., TR-069/TR-104, ACS/TARDIS provisioning).

Responsibilities

• Perform end-to-end VoIP and broadband device validation.
• Develop and maintain automation frameworks and reusable libraries.
• Integrate with Git, CI/CD, and automated reporting.
• Troubleshoot SIP/RTP and analyze logs using Wireshark.

Skills

VoIP Testing

Broadband Testing

SIP/RTP/SDP

Linux scripting

API automation

CI/CD

Wireshark troubleshooting

Automation framework design

Git

Jenkins

Ansible

TR-069/TR-104

RDK-B

vQUAD

Automation reporting

Tools

Jenkins

Git

Ansible

Job description

L&T Technology Services Limited (LTTS) is a global leader in Engineering and R&D (ER&D) services. With 719 patents filed for 57 of the Global Top 100 ER&D spenders, LTTS lives and breathes engineering. Our innovations speak for themselves – World’s 1st Autonomous Welding Robot, Solar ‘Connectivity’ Drone, and the Smartest Campus in the World, to name a few.

LTTS’ expertise in engineering design, product development, smart manufacturing, and digitalization touches every area of human lives - from the moment one wakes up till the time one goes to bed. With 69 Innovation and R&D design centres globally, we specialize in disruptive technology spaces such as 5G, Artificial Intelligence, Collaborative Robots, Digital Factory, and Autonomous Transport.

We are looking for someone with key skills and able to perform the following roles & responsibilities :-

VoIP Automation Engineer-Broadband / RDK-B

Mandatory Skills:

Voice and Broadband Domain

• Practical Voice/VoIP E2E testing experience.
• Call setup, call teardown, hold, transfer, waiting, forwarding, voicemail, Caller ID, and conference-call validation.
• Broadband gateway/CPE and ATA testing.
• Voice registration, provisioning, and recovery validation.
• Working knowledge of SIP call-flow fundamentals for troubleshooting.

Automation Engineering

• Linux and shell scripting.
• API automation and validation.
• Automation-framework design, reusable libraries, and test-data management.
• Git and CI/CD integration.
• Failure triage, log analysis, and automated reporting.

Platform Experience

• Hands-on Automatics experience, or experience integrating with a comparable orchestration framework.
• Hands-on vQUAD experience and an automated voice-call and audio-validation platform.
• RDK-B platform experience.
• SIP, RTP and Wireshark-based voice troubleshooting.

Overall Experience

• Minimum 5+ years of experience in Test Automation, with hands-on experience in Voice/VoIP, telecom services, or broadband device validation.
• Proven experience developing and maintaining automation frameworks for SIP-based voice services, ATA devices, broadband gateways (CPEs), or telecom platforms.
• Strong experience in automating voice call flows, voice feature validation, service provisioning, firmware upgrade validation, and recovery testing.
• Experience with vQUAD, Automatics Framework, TR-069/TR-104, ACS/TARDIS provisioning, WebPA, Jenkins, Git, Ansible, and CI/CD integration.
• Strong knowledge of SIP, RTP, SDP protocols, VoIP signaling, voice troubleshooting, and packet analysis using Wireshark.
• Experience working in broadband environments involving service provisioning, voice registration, reboot recovery, firmware upgrades, and end-to-end voice validation.
• Experience in RDK-B platforms, release validation, and release sign-off activities.