02/17/2026 updated
JT
100 % available
IMS Core Test Engineer - Telecom & Wireless Networks Specialist
Swindon, United Kingdom
Only remote
B.E. in Computer Science Engineering4G (Telecommunication)3GPP (Telecommunication)LTE (Telecommunication)ResearchArchitectureTest AutomationTelecommunicationsData As A ServicesDebuggingDefect TrackingFailure AnalysisNetwork TroubleshootingLog AnalysisNetwork Functions VirtualizationProtocol Analysis
IMS and VoLTE Testing
Comprehensive testing and troubleshooting of IMS and VoLTE services on 4G/LTE and 5G Core networks for voice, video, and data services
Protocol Analysis
Advanced protocol and trace analysis using SIP, RTP, RTCP, Diameter, and Wireshark for end-to-end call flow validation and debugging
5G Core Architecture
Working knowledge of 5G Core SA/NSA architecture and IMS service continuity with hands-on experience in carrier-grade networks
Network Troubleshooting
End-to-end call flow debugging across IMS Core nodes with defect tracking and resolution capabilities
Virtualized Network Functions
Exposure to VNF-based virtualized core network environments and regression testing cycles
3GPP Standards
Familiarity with 3GPP standards and mission-critical service dependencies in telecom environments
Log Analysis
Log collection and troubleshooting using Putty for deep-dive fault analysis and system investigations
Test Automation
Functional, regression, and E2E testing with defect lifecycle management and cross-functional collaboration
Comprehensive testing and troubleshooting of IMS and VoLTE services on 4G/LTE and 5G Core networks for voice, video, and data services
Protocol Analysis
Advanced protocol and trace analysis using SIP, RTP, RTCP, Diameter, and Wireshark for end-to-end call flow validation and debugging
5G Core Architecture
Working knowledge of 5G Core SA/NSA architecture and IMS service continuity with hands-on experience in carrier-grade networks
Network Troubleshooting
End-to-end call flow debugging across IMS Core nodes with defect tracking and resolution capabilities
Virtualized Network Functions
Exposure to VNF-based virtualized core network environments and regression testing cycles
3GPP Standards
Familiarity with 3GPP standards and mission-critical service dependencies in telecom environments
Log Analysis
Log collection and troubleshooting using Putty for deep-dive fault analysis and system investigations
Test Automation
Functional, regression, and E2E testing with defect lifecycle management and cross-functional collaboration
Project history
Supported IMS-based voice services across 4G and 5G Core environments for AT&T/Nokia, performed end-to-end troubleshooting using SIP, RTP, and RTCP call flow analysis, conducted PCAP/Wireshark trace analysis, and worked with virtualized core network functions
Billed and entered charges into billing software, reviewed and validated accuracy of charges including dates of service and patient identification, investigated pending claims and resolved discrepancies