Junior Software Integration Engineer
International Global Telecoms Company
Johannesburg, Gauteng
4d ago
source : Best Za Jobs

Description Responsibilities : Review 3GPP standards, architectural and design documents to develop thorough and in-depth test plans for testing LTE / 5G / O-RAN System / Nodal functionalities.

Guide testing plan on test scripts using available test tools. Guide and build test setups as per the requirements of the test case.

Execute test cases and validate the test status based on the expectations for the test ccase. Analyze system logs, test tool logs and use this information for debugging issues and identifying accurate root causes for the problems seen on the system under test or in the network.

Use test expertise to identify overall improvements and enhancements which are possible on the system. Debug field data and identifying potential problems and re-creating the same in the lab.

Other duties as assigned. Technical Experience Required : Excellent understanding of LTE / 5G architecture, protocols, interfaces with in depth details of message contents is mandatory Strong Knowledge on LTE / LTE-A / 5G / O-RAN , Virtual RAN Feature, performance, stability, KPI and Mobility Excellent understanding of LTE / 5G PHY, MAC, RLC, PDCP, RRC, S1AP, X2AP, RRM, SON,EMS Excellent understanding and working experience of LTE / 5G 3GPP Specifications, LTE / 5G L2, RRC, S1AP, X2AP, OAM, RRM and NAS procedure is must Solid Working experience with tool like XCAL, QXDM, Wireshark.

TM500, Network Emulator, Spectrum Analyzer, Air Monitor, Programmable Attenuators, Signal Generators etc is must Working experience of LTE / 5G feature testing like Cell selection, re-selection, X2 / S1 Handovers, RIC Cases, MIMO, ETWS, CMAS, Carrier Aggregation, QoS, Bearer Management, Access Baring, RAC, RBC, DRX, OAM / EMS, RRM features Solid experience Test Execution and Logs Analysis, Raising, tracking and closer issues.

Solid experience in analyzing logs and debugging issues for air interface, S1 / X2, F1, E1, E2. O2 interface, multi-vendor Integration and inter-operability issues Experience in Requirement understanding, Test strategy design, Effort estimation and test report preparation Automation experience is added advantage Thorough understanding of 3GPP specs covering PHY, MAC, PDCP, RLC, RRC, S1AP and X2AP protocols and O-RAN Specs / Open RAN Specifications Hands on work experience of testing LTE / 5G / O-RAN e / gNodeBs / Disaggregated RAN Solutions.

Knowledge of message flows and parameters used in the messages for LTE / 5G procedures Understanding of 3GPP Release 14 and Release 15 / 16 features Familiarity with LTE / 5G Disaggregation / SON / SMO functionalities is desirable Familiarity in analyzing drive test data collected from field using tools like TEMS, XCAL Accuver etc.

Familiarity with application layer optimizations; TCP traffic optimization, Video traffic optimization etc. Familiarity with scripting languages like Tcl, Python Other Experience Required : Bachelor’s or Master’s Degree in Engineering Interested candidates can send their CV

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