Role: IMS + PSTN Test / QA Lead
Experience: 9-11 Years
Location: Hyderabad | Bengaluru | Chennai | Delhi NCR
Job Description
We are seeking an experienced IMS + PSTN Test / QA Lead to lead validation activities across next-generation voice networks and traditional PSTN environments. The role focuses on interoperability, gateway validation, signaling analysis, and quality assurance for end-to-end voice services.
Key Responsibilities
• Lead testing activities across IMS, VoLTE, and PSTN Interconnect environments.
• Define and execute end-to-end test strategies and validation plans.
• Validate SIP, SS7, and ISUP signaling flows.
• Perform gateway, interconnect, and call-flow validation.
• Drive functional, interoperability, regression, and performance testing.




• Execute load and stress validation using Spirent Landslide.
• Lead defect tracking, RCA activities, and quality reviews.
• Collaborate with multiple stakeholders to ensure successful delivery.

Required Skills
• IMS, VoLTE & PSTN Testing
• SIP, SS7 & ISUP Protocols
• Gateway & Interconnect Testing
• Spirent Landslide
• Wireshark & Trace Analysis
• Test Governance & Defect Management
• Call Flow Validation
• Performance & Interoperability Testing

Thanks & Regards,
Md Shahid, TCS

📌 IMS + PSTN Test (Bengaluru)
🏢 Tata Consultancy Services
📍 Bengaluru