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https://bayt.page.link/v1TUmrkCw1dqRip19
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PS Core Engineer

23 days ago 2026/03/13
Full time
500 Employees or more · Recruitment & Employee Placement Agency

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Job description

Key Responsibilities:

  • Perform daily health checks and monitor alarms on PS Core nodes (MME, SGSN, GGSN, EPG, DNS/PCC/PCG, SAPC, SMF/UPF).
  • 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 PS Core portfolio: SGSN-MME, EPG (GGSN/PGW/SGW), PCC/PCG, SAPC, DRA, SMF/UPF.
  • Understanding of 2G/3G/4G/5G call flows (Attach, TAU/RAU, Handover, Session Management).
  • Proficient in protocols: GTP-C/U, Diameter, Radius, HTTP/2, SIP, SCTP, TCP/UDP/IP.
  • Familiarity with virtualization technologies (VMware, OpenStack, Kubernetes, Docker).
  • Hands-on experience with 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 manage high-priority incidents.
  • Excellent communication and documentation skills for effective cross-team collaboration.



Skills

Qualifications:

  • Bachelors degree in Telecommunications, Electronics, Computer Engineering, or a related field.
  • 4–8 years of experience in PS Core / EPC / 5G Core networks .
  • Knowledge of cloud-native 5G Core (dual-mode 5GC, CNIS, SMF/UPF integration) is an advantage.


This job post has been translated by AI and may contain minor differences or errors.
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Fircroft is a global workforce solutions provider to the technical engineering sectors. Since 1970 Fircroft has been serving the biggest names in Oil & Gas, Petrochemical & Chemical, ICT, Mining & Minerals, Infrastructure & Construction, Power, Nuclear & Utilities and Automotive. Over 10,000 contractors trust Fircroft to take care of their careers. Open up a world of opportunity at fircroft.com Specialties: Technical Recruitment, Oil & Gas Recruitment, Contract Recruitment, Permanent Recruitment, Automotive Recruitment, Power & Energy Recruitment, Mining and Minerals Recruitment

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