Automation Tester with VoIP, SIP

Salary: £78,000 - 95,940 per year

Requirements:

• Deep knowledge of SIP, RTP, and SDP


• Python and API automation experience


• Experience with Wireshark, tcpdump, and PCAP analysis


• Experience with VoIP tools such as SIPp, Spectra, WinSIP, or StarTrinity


• Experience with Linux (RHEL/CentOS) and basic server administration


• Experience with Perimeta SBC, Metaswitch Rhino, or Dialogic Media Server is nice to have


• SSCA certification or knowledge of IN protocols (INAP/MAP) is nice to have

Responsibilities:

• Build and maintain automated test frameworks for signaling and media handling


• Simulate concurrent call load and network degradation


• Diagnose audio drops and call failures using packet captures


• Integrate test scripts into CI/CD pipelines such as Jenkins and GitLab

Technologies:

• API


• CI/CD


• Jenkins


• Linux


• Network


• Python


• RHEL


• GitLab

More:

We are hiring an Automation Tester with VoIP and SIP expertise for a 6-month contract with a possible extension. The role is based in Ipswich, UK, with a hybrid working model of 3 days per week in the office. We are looking for someone who can help ensure the reliability and quality of our real-time voice and video communication systems. This is an urgent vacancy with immediate interview shortlisting.

last updated 38 week of 2026