Join to apply for the Senior RAN & Core Network Test Engineer role at Qualitest
Join to apply for the Senior RAN & Core Network Test Engineer role at Qualitest
J ob Title: Network Test Engineer (RAN/Core, LTE/5G)
J ob Title: Network Test Engineer (RAN/Core, LTE/5G)
Location: Bristol / Hybrid
Type: Permanent
About The Role
Qualitest is looking for an experienced Network Test Engineer to join our growing team, working on cutting-edge projects with a focus on LTE/VoLTE and 5G technologies. This is an exciting opportunity to work with a global leader in telecom innovation, performing end-to-end testing, integration, and troubleshooting across RAN and Core network components.
Key Responsibilities
* Design, develop, and execute comprehensive test cases for integration, regression, and system validation across 2G, 3G, LTE, and 5G networks.
* Perform functional, performance, and regression testing on EPC and IMS Core components, including VoLTE and Mission Critical Services.
* Analyse logs and traces (UE, RAN, and Core) to identify issues and perform detailed Root Cause Analysis (RCA).
* Work closely with cross-functional teams, including network engineers and vendors, to troubleshoot and resolve complex network issues.
* Document test results, generate reports, and manage defects using tools like HP ALM and JIRA.
Technical Expertise
* Strong knowledge of 4G/5G Core and RAN architectures, including IMS, EPC, and VoLTE call flows.
* Proficient in protocols such as SIP, Diameter, GTP, S1AP, SCTP, IPSEC, and RRC/RLC layers.
* Hands-on experience with vRAN, small cells, MIMO, GPS/PTP timing, and OpenRAN integration (RU/DU/CU).
* Skilled in using tools like Wireshark, QXDM, XCAL, Viavi, Ixia, and vendor-specific platforms (NetAct, ENM, Huawei U2020).
* Familiarity with network emulators, Python scripting, and OpenStack for automation and test environment management.
* In-depth understanding of 3GPP standards, KPIs, and performance metrics for LTE and 5G systems.
What We’re Looking For
* 8+ years of experience in network testing with a strong background in RAN technologies.
* 5+ years of hands-on experience in RAN testing (essential).
* Excellent problem-solving and communication skills, with the ability to work in a fast-paced, collaborative environment.
Seniority level
* Seniority level
Mid-Senior level
Employment type
* Employment type
Full-time
Job function
* Job function
Information Technology
* Industries
IT Services and IT Consulting
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