Mobile Packet Core Senior Design Engineer

Job type:
CPL Solutions
flag_no Ireland
project ID:

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Key deliverables

  • Design of the Mobile Packet Core network supporting 2G/3G/4G technologies.
  • Development of complex network solutions, capacity management, optimisation & performance.
  • Manage in life upgrades (both hardware & software) of mobile packet core & supporting infrastructure.
  • Deliver key technical solutions while achieving critical business requirements.
  • Prioritisation of tasks and ability to allocate own time to successfully complete projects with minimal supervision.
  • Planning, design & build responsibility for packet core network supporting 2G/3G/4G technologies.
  • Analysis of core network performance using agreed KPI's in order to identify and evaluate network trends, making technical recommendations where necessary.
  • Responsible for network architecture reviews and developing detailed design documentation/diagrams.
  • Collaborate with other business areas such as CTO to ensure the successful execution of long term technical strategies.
  • Work closely with Eircom's vendors through all phases of project delivery (requirements gathering, design, implementation and testing etc).
  • 3rd Tier support to service operations areas on customer service issues.


  • Strong Knowledge of mobile packet core architecture (SGSN, GGSN, MME, PCEF etc).
  • Substantial design experience within multi-vendor core environments (Ericsson, Cisco, ALU etc).
  • Detailed knowledge of PS core fundamentals (intra and inter RAT mobility, session management) & 3GPP Specifications, architecture and call flows.
  • Detailed understanding of PS core protocols (IP, TCP, UDP, SCTP, GTP, Radius, Diameter, SIGTRAN, RANAP, GMM, Diameter)
  • Good understanding of OSPF, BGP HSRP, L2 VLANs/VRF
  • Knowledge of DNS, IP Addressing, NAT, load balancing/distribution.
  • Knowledge of Linux/Solaris/UNIX Operating Systems and Scripting a bonus.
  • Proven track record of success when delivering medium-large scale technical projects.

If you are interested in finding more about this excellent opportunity please contact Claire O'Dwyer (see below)