PS Core Network Engineer

Job SummaryWe are seeking a PS (Packet Switched) Core Network Engineer to operate, maintain, and optimize PS core networks across 2G, 3G, 4G, and 5G environments. The role covers daily operations, advanced troubleshooting, solution implementation, and network evolution activities, with responsibilities aligned to the engineers experience level.Experience LevelsEngineer: 3 YearsSenior Engineer: 5–8 YearsResponsibilities & Technical Requirements:Advanced Troubleshooting & MaintenanceStrong capability in comprehensive troubleshooting and routine PS core maintenanceSolid understanding of IPv4 networking and subnettingExpertise in trace capture and analysis tools:PCAP, TraceviewProficient with FMA for traffic statistics, alarms, operation logs, and CHR analysisMobility, Interfaces & ServicesStrong command of mobility and session management:Attach, TAU, Handover, PDP setup, session setupRegistration, inter-RAT interworkingUser authentication, NE selection, QoS principlesKnowledge of interface signaling tracing and analysis:Ga, Gn, Iu, Gr, Gb, S1-MME, S1-U, S5, S8, SGi, Gx, GyPS Core ImplementationHands-on experience with 2G / 3G / 4G PS service implementations:SGSN/MME poolingAddress pool allocationCSFBExperience with simple PCC services and charging schemesO&M & KPIsStrong routine O&M capabilities:Message tracing, alarm analysis, performance monitoringExperience with patching, upgrades, part replacement, and capacity expansionKnowledge of NSA and SA architectures and 5G solutionsAbility to analyze 3G / 4G / 5G KPIs and counters and troubleshoot KPI degradationExperience with licenses, patches, certificates, and KPI systems