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  • Posted: Jun 6, 2022
    Deadline: Not specified
  • 9Mobile is a Nigerian telecommunications services provider, currently operating in Nigeria. 9Mobile is formerly known as Etisalat Nigeria.
    Read more about this company


    Senior Engineer Circuit Switch Core

    Job Summary

    • Support all CS core network operation and maintenance activities to ensure required availability.
    • Coordinate all CS core related troubleshooting, fault analysis and performance improvement measures - preventive maintenance.
    • Coordinate all acceptance testing for all CS core node integrations.
    • Oversee all CS core network audit and performance improvement/maintenance activities on the network.
    • Ensure preventive measures are implemented to avert network downtime and service disruption on CS core network elements and links.
    • Ensure all vendor activities are in line with all agreed SLAs & KPIs.

    Principal Functions

    • Maintain maximum availability and reliability of the entire CS core network
    • Improve mean time to repair (MTTR) on all CS core network related faults and complaints
    • Promptly implement all interconnects and service requests with partners
    • Implement software upgrades, patch installations and expansion activities on all CS core network nodes
    • Support NOC/Field operations teams in all CS core related escalations
    • Review all new CS core related features and its impact on existing network
    • Ensure regular network performance improvement via key KPI's such as LUSR, PSR, AUTHSR, CSR
    • Regularly review B number analysis table across all CS core systems.
    • Enforce strict conduct of Quarterly audit of all CS core node configurations and ensure implementation of all relevant recommendations
    • Ensure all change requests are implemented timely and accurately by Vendor
    • Carry out quarterly backup and restore tests on all CS core network elements.
    • Continuously review all CS core operations frameworks, make recommendations for improvement and implement approved initiatives to ensure enhanced network performance.
    • Recommend and implement strict measures to control fraudulent high usage activities of illegal inbound/outbound roamers on the network.
    • Integration, daily operations and maintenance on MSC/ HSS/ MGW/ STP/ SPS/ SBC/ ITSC/ U2020/other CS core nodes.
    • Ensure proper documentation of operations on all CS core network systems
    • Maintain snag/fault lists and follow up with vendor on clearance.
    • Carry out all integrations and implementations on CS core nodes.
    • Analyse performance reports and proactively resolve core network challenges.
    • Supervise the implementation of software upgrades; file system upgrades; and hardware replacement on core network.
    • Specify and review critical CS core performance measurement counters.
    • Lead the troubleshooting of core network operations challenges and create solutions.
    • Produce policies and procedures for managing and controlling managed services team.
    • Perform periodic reconciliation of HLR profiles and templates in line with business requirements.
    • Audit announcements and tone files between the IN platform and core network nodes.
    • Perform other tasks as may be assigned by the Manager Core & Datacom

    Educational Requirements

    • First degree or equivalent in Electrical/ Electronic Engineering, Computer Engineering and/ or any other relevant discipline.
    • Between three (3) to five (5) year experience in Telecoms.


    • Excellent communication and interpersonal skills.
    • Excellent problem-solving skills.
    • Good time management skills.
    • Good reporting skills.
    • Behaviour
    • Passion for Excellence
    • Integrity
    • Empowering people
    • Growing people
    • Teamwork
    • Customer Focus

    Method of Application

    Interested and qualified? Go to 9Mobile on to apply

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