وظيفة مهندس PS Core لدى Tangent International في الرياض

Overview The PS Core Engineer will be responsible for the design, configuration, optimization, and troubleshooting of Ericsson Packet Core solutions, including EPC, MME,5G Core. The role demands hands-on experience with Ericsson equipment and interfaces with planning, operations, and cross-functional engineering teams to ensure high availability and performance of mobile broadband services.

Key Responsibilities

■ Perform daily health checks and monitor alarms on Ericsson PS Core nodes (MME, EPG, PCC/PCG, SAPC, SMF/UPF, NEF ,ESOA, ..etc.).

■ Troubleshoot and resolve network faults, capacity issues, and performance degradation.

■ Manage subscriber sessions, PDP contexts, bearer handling, and IMSI tracing.

■ Implement new APNs, IMSI ranges, rating groups, and QoS profiles.

■ Configure PCC rules, PDR/QER/FAR/URR policies, and interface with PCRF/SAPC.

■ Manage DNS/NAPTR/SRV configurations for IMS and EPC services.

■ Support integration of new PS Core nodes (vEPG, vMME, vUPF on cloud/Kubernetes).

■ Plan and implement software upgrades, patches, and capacity expansions.

■ Analyze KPI trends (Attach success, bearer setup, handover success, latency, throughput).

■ Develop and maintain scripts (Bash, Python, Expect, AWK) for log parsing, KPIs, and automation.

Required Skills & Competencies

■ Strong knowledge of Ericsson PS Core portfolio: SGSN-MME, EPG (GGSN/PGW/SGW), PCC/PCG, SAPC, DRA, SMF/UPF,NEF,ESOA.

■ Understanding of 2G/3G/4G/5G call flows (Attach, TAU/RAU, Handover, Session Management).

■ Protocols: GTP-C/U, Diameter, Radius, HTTP/2, SIP, SCTP, TCP/UDP/IP.

■ Familiarity with virtualization (VMware, OpenStack, Kubernetes, Docker).

■ Hands-on with Ericsson CLI (gsh, vshell, epg, pcc).

■ Proficiency in OSS/BSS integration, NetAct, ENM, ENIQ, Wireshark.

■ Strong analytical and problem-solving skills.

■ Ability to work under pressure and handle high-priority incidents.

■ Good communication and documentation skills for cross-team collaboration.

Qualifications

■ Bachelor’s degree in Telecommunications, Electronics, Computer Engineering, or related field.

■ 4-8 years’ experience in PS Core / EPC / 5G Core networks (Ericsson preferred).

■ Vendor certifications (Ericsson Certified Professional) are a plus.

■ Knowledge of cloud-native 5G Core (dual-mode 5GC, CNIS, SMF/UPF integration) is an advantage.