About this role
<div><div style="padding:10.0px 0.0px;border:1.0px solid transparent"><div style="font-size:16.0px;word-wrap:break-word"><H2 style="font-size:1.0em;margin:0.0px"><b>Job Description</b></H2> </div><div><p> </p> <p><span style="font-family:arial, helvetica, sans-serif"><strong>Purpose:</strong></span></p> <p style="font-family:arial, helvetica, sans-serif"><span style="font-family:arial, helvetica, sans-serif">• Provide technical and operational support for 4G/5G Mobile Core nodes (nTAS/MSS/SBC/CFX/HSS/HLR/OneNDS/UDM/AUSF/FW) and International Roaming related service support.</span></p> <p> </p> <p><span style="font-family:arial, helvetica, sans-serif"><strong>Responsibilities:</strong></span></p> <p style="font-family:arial, helvetica, sans-serif"><span style="font-family:arial, helvetica, sans-serif">• Perform daily operation and administration of 4G/5G Mobile Core nodes (nTAS/MSS/SBC/CFX/HSS/HLR/OneNDS/UDM/AUSF/FW) and ensure smooth network operation.</span></p> <p style="font-family:arial, helvetica, sans-serif"><span style="font-family:arial, helvetica, sans-serif">• Carry out system maintenance activities eg patch installation to improve system performance, system release upgrade.</span></p> <p style="font-family:arial, helvetica, sans-serif"><span style="font-family:arial, helvetica, sans-serif">• Develop and review system operations processes, update network and operational documents to ensure operation effectiveness.</span></p> <p style="font-family:arial, helvetica, sans-serif"><span style="font-family:arial, helvetica, sans-serif">• Perform system security hardening, vulnerability assessment, and implement the necessary corrections/ processes to mitigate security risks.</span></p> <p style="font-family:arial, helvetica, sans-serif"><span style="font-family:arial, helvetica, sans-serif">• Perform proactive monitoring of network service KPIs/ alarms and performance analysis to ensure service quality level.</span></p> <p style="font-family:arial, helvetica, sans-serif"><span style="font-family:arial, helvetica, sans-serif">• Perform service troubleshooting and testing with local service providers and overseas roaming partners. </span></p></div></div><div style="padding:10.0px 0.0px;border:1.0px solid transparent"><div style="font-size:16.0px;word-wrap:break-word"><H2 style="font-size:1.0em;margin:0.0px"><b>Qualifications</b></H2> </div><div><p><strong>Requirements:</strong></p> <p>• Degree in Electronics/ Communications/ Networking or equivalent</p> <p>• 5 years exeprience in Telco sector</p> <p>• Good technical knowledge of Mobile 4G/ 5G Core network and related service/ call flows and associated protocols (IMS/VoLTE/SS7/Sigtran/Diameter/SIP/SCTP)</p> <p>• Ability to perform end-to-end network service troubleshooting</p> <p>• Working knowledge of VoLTE roaming and IREG related testing</p> <p>• Working knowledge of Network and Application Securities</p> <p>• Working knowledge of IP switching and routing protocols</p> <p>• Working knowledge of Linux and VM</p> <p>• Basic proficiency in programming and scripting skills</p> <p>• Willing to perform late night maintenance during maintenance window period for release/ upgrade/ software patch installation and project cutover</p> <p> </p></div></div></div>