Job Description : Preventive, Corrective and Planned Corrective Maintenance. Timely Node and/or Functionality Restoration according to KPI established levels. Ensure Trouble Ticket (TTs) turn-around times meet established SLA levels. Configuration Change Introduction and Management. Creation and Improvement of O&M procedures and routines in order to keep performance and availability at KPI established levels Handover Quality Assurance for new Nodes and Services. Routine activities (i.e. as per daily, weekly checklists, etc) to assess the node/service’s overall health and performance. Periodic backups of nodes as per backup schedule. Trouble Ticket (TT) handling Change Request (CR) handling. Reporting and Escalation of faults to Supplier Support (e.g. CSR handling). Node and Functionality restoration during Emergencies. Prepare and Implement Data Transcripts changes for system improvements, inter-node connectivity, international roaming agreements, and optimal routing. Prepare and implement subscriber data modifications for end-user services / customer care. Prepare and Implement configuration changes for overall system/functionality improvement and/or optimization. Participate in New Node and/or New Service and/or Upgrade Projects together with Supplier (e.g. Network Rollout projects) as (i) an advisor and point of reference for operational feasibility, (ii) during the Acceptance /ATP, and (iii) to ensure a Quality Handover that focuses on maintainability and supportability of Node/Service. Participate in On-Call Schedule on rotational basis. Provide performance reporting with adequate information i.e. root-cause analysis, to enable stakeholders determine appropriate long-term improvements with of Network Optimisation team. Administration, Installation and Reconciliation of subscribers in accordance with other processes/teams within the enterprise e.g. billing, marketing, IN Prepaid/SL, Design and Engineering.