RESPONSIBILITIES: Designing and implementing automated tests Executing tests and reporting results Preparing and maintaining the test environment Analyzing reports and test outcomes, and recommending fixes Maintaining and updating test documentation  REQUIREMENTS: Extensive hands-on experience with Python-based test automation Proficient in English Good grasp of standard call-processing flows Strong foundation in networking and security principles Excellent troubleshooting, debugging, and testing abilities CI/CD background, particularly with Jenkins  NICE TO HAVE:Deep understanding of SIP/RTP/TLS protocols, media/codec negotiation, and core VoIP concepts; practical experience with Wireshark and the SIPP testing tool