Back Office Core Engineer

         Main activities and tasks:

• Provide second-line operational support for the Core network, ensuring high availability, stability, and service quality.
• Manage the lifecycle of Core-related Incidents, Problems, and Changes, coordinating with vendors, field engineers, and stakeholders.
• Perform configuration, integration, and maintenance of Core nodes across legacy and cloud-native platforms.
• Monitor performance KPIs, signalling flows, and service quality metrics, proactively detecting degradations and implementing corrective actions.
• Participate in Change Management, planning and executing software upgrades, capacity expansions, parameter changes, and feature activations in line with approved Methods of Procedure (MoPs).
• Conduct acceptance testing and validation for new Core nodes, releases, and services before production rollout.
• Provide remote technical support for Core-related implementation or troubleshooting activities, including interworking with RAN, IP transport, and Data Centre teams.
• Support Problem Management by performing root cause analysis (RCA) of recurring service issues and recommending permanent fixes.
• Deliver reports and documentation on incidents, performance trends, and network changes, contributing to the operational knowledge base.
• Participate in public event assurance by monitoring Core traffic and subscriber sessions during peak or special events.
• Cover 24x7 on-call duties, acting as technical authority for Core-related escalations.
• Collaborate closely with RAN, IP, Security, and Data Centre teams to ensure end-to-end service stability.
• Contribute to continuous improvement initiatives, including automation of routine tasks, capacity planning, and feature enablement.

         Required Education & Trainings:

• Bachelor’s degree in Telecommunications, Electronics, or IT Engineering (or equivalent experience).
• Vendor or technology-specific certifications (Ericsson preferred, Nokia, Huawei, Cisco, etc. in Core domains) are an advantage.
  
  Required Experience:
  
  
• Hands-on operational experience with Core network elements.
• Familiarity with NFVI / Cloud Native platforms and Core virtualisation.
• Strong background in Incident, Problem, and Change Management in telecom Core networks.
• Knowledge of interworking between RAN, IP/MPLS, and Core.
• Experience in Managed Services or NOC environments is desirable.
  
  Specific skills & technical knowledge:
  
  
• Good understanding of mobile Core network architectures, including Circuit-Switched (CS), Packet-Switched (PS/EPC), IMS, VAS, and evolving 5G Core domains.
• Knowledge of Core protocols and interfaces used for voice, data, signalling, and policy/charging functions.
• Familiarity with VoLTE, VoWiFi, and multimedia Core services, as well as integration with RAN, IP transport, and Data Centres.
• Awareness of cloud-native and virtualised Core platforms and their operational requirements.
• Understanding of service security and interworking components.
• Knowledge of subscriber/session management, mobility, and policy/charging control.
• Scripting/automation skills for operational efficiency are an advantage.
• Strong troubleshooting and analytical skills in multi-vendor, multi-technology environments.
• Excellent communication, documentation, and reporting skills.
• Professional level of English (written and spoken) is mandatory.

        What We Offer:

• Growth Opportunities – Support for learning and career advancement.
• Work-Life Balance – Flexible hours and hybrid work options.
• Inclusive Culture – A welcoming, diverse environment where everyone feels valued.
• Generous Time Off