What are the responsibilities and job description for the Senior VoIP Test Engineer position at Cyber Space Technologies LLC?
Role: Senior VoIP Test Engineer (Onsite)
Location – Mountain View, CA
We are seeking a highly skilled Senior VoIP Test Engineer to support migration and validation of residential and enterprise voice platforms to a cloud-based telephony system. This is a hands-on, lab-focused role requiring deep SIP protocol expertise, ATA/CPE device testing, and strong troubleshooting skills.
Key Responsibilities:
- Design and execute VoIP regression and migration test plans
- Validate SIP signaling, RTP/media flows, and end-to-end calling features (Voicemail, E911, billing)
- Perform TR-069 provisioning and lifecycle validation for ATA/CPE devices
- Troubleshoot SIP issues using packet analysis tools (e.g., Wireshark)
- Test SIP over TLS/SRTP, NAT traversal, and firewall behavior
- Conduct interoperability testing across ATAs, SBCs, and cloud platforms
- Automate validation workflows using Python, REST APIs, and SQL
Required Skills:
- Strong expertise in SIP, SDP, RTP/RTCP, and VoIP protocols
- Experience with ATA devices (Poly, Grandstream) and TR-069 provisioning
- Proficiency in Wireshark, Python scripting, and SQL
- Solid networking knowledge (TCP/UDP, NAT, QoS, VLANs)
Preferred:
- Experience in telecom/ISP environments
- Familiarity with SBCs (AudioCodes, Ribbon, CUBE) and SIP load testing tools (SIPp)
Ideal Candidate:
Detail-oriented, hands-on in lab environments, with strong troubleshooting skills and an automation mindset.