Senior VoIP Test Engineer

Job Title: Senior VoIP Test Engineer
Location: Mountain View CA (Onsite 5 days/week mandatory)
Employment Type: Contract (W2 Only)
Priority: High / Urgent Requirement

Position Overview

We are seeking a highly experienced Senior VoIP Test Engineer with strong hands-on expertise in VoIP protocols ATA/CPE device testing and telecom-grade environments. The ideal candidate will have deep experience in end-to-end call flow validation remote provisioning and packet-level analysis within carrier or ISP ecosystems.

Key Responsibilities

• Perform end-to-end VoIP testing including functional regression and interoperability testing
• Validate SIP-based call flows including signaling and media handling
• Conduct hands-on testing with ATA/CPE devices in lab environments
• Execute remote provisioning and configuration using TR-069 protocols
• Analyze network traffic and troubleshoot issues using packet capture tools
• Develop and maintain automation scripts for test execution and validation
• Collaborate with cross-functional teams including development network engineering and operations

Required Skills & Experience

• Strong hands-on experience with SIP protocol (REGISTER INVITE BYE SDP RTP/RTCP)
• Proven experience with ATA/CPE device testing (e.g. Poly Grandstream Cisco or similar)
• Experience with TR-069 remote provisioning in a carrier or ISP environment
• Expertise in Wireshark for packet capture and detailed call flow analysis
• Proficiency in Python scripting for test automation
• Minimum 9 years of experience in VoIP testing
• Strong understanding of telecom/VoIP architectures and protocols

Preferred Background

Candidates with experience from the following environments will be highly preferred:

• Internet Service Providers (ISP)
• Telecom or Unified Communications (UCaaS) platforms
• VoIP/ATA device manufacturing companies

Sachin kumar

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