IMS Test / QA Engineer

Tata Consultancy Services; Delhi; On-site; INR 900,000 - 1,500,000; Full time

Job summary

Tata Consultancy Services is seeking an experienced IMS Test/QA Engineer to test next-generation telecom services across IMS-based technologies. You will execute comprehensive test suites, validate VoLTE/VoWiFi/VoNR call flows, and design end-to-end scenarios to ensure high performance and reliability.

You will work with cross-functional teams, analyze SIP/Diameter signaling, and produce detailed reports and defect documentation to drive product quality and user experience.

Qualifications

• 5-8 years of experience in Telecom Testing / QA.
• Hands-on experience with Spirent Landslide.
• Strong knowledge of IMS, VoLTE, VoWiFi, and VoNR technologies.
• Good understanding of SIP and Diameter protocols.
• Experience in functional, integration, regression, load, and stress testing.
• Expertise in Wireshark, PCAP analysis, and troubleshooting signaling flows.

Responsibilities

• Execute functional, integration, regression, and performance testing for IMS-based services.
• Validate VoLTE, VoWiFi, and VoNR call flows and related telecom services.
• Design and execute test scenarios for feature validation, interoperability, and end-to-end service testing.
• Perform load, stress, and scalability testing using Spirent Landslide.
• Analyze SIP and Diameter signaling messages to troubleshoot issues and identify root causes.
• Conduct packet-level analysis using Wireshark and PCAP traces.
• Collaborate with development, network, and operations teams to resolve defects and improve product quality.
• Prepare test plans, test cases, execution reports, and defect tracking documentation.

Skills

Telecom testing

Test planning

Troubleshooting

Education

Bachelors in Telecommunication or related field

Tools

Spirent Landslide

Wireshark

PCAP analysis

Job description

Job Description

We are looking for an experienced IMS Test/QA Engineer with strong expertise in telecom testing and validation. The role involves testing next-generation communication services across IMS-based technologies, ensuring high performance, reliability, and seamless user experience.

Key Responsibilities

• Execute functional, integration, regression, and performance testing for IMS-based services.
• Validate VoLTE, VoWiFi, and VoNR call flows and related telecom services.
• Design and execute test scenarios for feature validation, interoperability, and end-to-end service testing.
• Perform load, stress, and scalability testing using Spirent Landslide.
• Analyze SIP and Diameter signaling messages to troubleshoot issues and identify root causes.
• Conduct packet-level analysis using Wireshark and PCAP traces.
• Collaborate with development, network, and operations teams to resolve defects and improve product quality.
• Prepare test plans, test cases, execution reports, and defect tracking documentation.

Required Skills

• 5-8 years of experience in Telecom Testing / QA.
• Hands-on experience with Spirent Landslide.
• Strong knowledge of IMS, VoLTE, VoWiFi, and VoNR technologies.
• Good understanding of SIP and Diameter protocols.
• Experience in functional, integration, regression, load, and stress testing.
• Expertise in Wireshark, PCAP analysis, and troubleshooting signaling flows.