Technical Authority CS Core

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The Technical Authority Expert – CS Core is part of Managed Services deliveries in line with the Ericsson Operations Engine. The role is responsible for providing technology leadership, domain expertise, operational support, and automation enablement within Core domain.

• Provide technical authority and domain expertise for CS Core platforms and services
• Perform daily operation and maintenance activities for CS Core network elements including MSC, MGW, HLR, IP‑STP, HSS, UDC, DSC/EIR/PG/UPG, Backup Servers, CCDM, CCRC, CCSM, SC, EDA2, NeLS, and related platforms
• Perform Daily Health Checks, Quarterly Audits, and Special Event Audits across all managed CS Core nodes
• Ensure smooth operation of CS Core services through proactive monitoring, troubleshooting, and performance optimization

• Perform assurance support activities including Change Introduction Impact Analysis, Business Requirement Impact Analysis, and support for complex change execution
• Support change rollback and fallback decision‑making
• Provide Incident Management support including complex incident resolution, critical incident handling, and service restoration
• Initiate Problem Management activities and third‑level functional escalations
• Perform root‑cause analysis and drive corrective/preventive actions
• Coordinate with vendors, suppliers, field services, and customer teams during incident resolution

• Manage, implement, and verify configurations across all CS Core nodes to ensure consistency, reliability, and compliance
• Support software lifecycle management including software upgrades, patch management, and package implementation
• Analyze software update impacts and provide implementation recommendations
• Support standard change execution, feature implementation, and configuration management activities

• Maintain on‑demand performance of core network components and services
• Analyze KPI trends, degradation indicators, and performance metrics
• Drive customer experience improvement initiatives through operational analysis and service optimization
• Support activities including KPI analysis, service quality improvements, and issue resolution

• Ensure all 5GC and CS Core nodes comply with customer security requirements, regulatory obligations, and operational standards
• Perform configuration and security audits to verify compliance with internal policies and external regulatory requirements
• Define and coordinate preventive maintenance and security maintenance activities

• Support Analytics & Automation teams by identifying automation opportunities and operational improvement initiatives
• Assist in defining automation requirements and validating developed automation use cases
• Support development and maintenance of automated service delivery methodologies
• Perform trend analysis to proactively identify potential failures and improve restoration

• Perform end‑to‑end tracing across protocols and interfaces to support fault isolation and troubleshooting activities
• Analyze signaling flows, network traces, and service behavior across CS Core environments
• Support inter‑domain troubleshooting activities involving Core, IMS, PS Core, IP, and Cloud domains

• Strong expertise in CS Core technologies including MSC, MGW, HLR, IP‑STP, HSS, UDC, DSC/EIR, and related network elements
• Strong understanding of telecom network architecture across 2G, 3G, 4G, and 5G technologies
• Deep knowledge of mobile core networks, telephony switching principles, signaling, call control, digit analysis, and voice services
• Experience performing protocol tracing and end‑to‑end troubleshooting across telecom interfaces and services
• Strong understanding of KPI formulas, KPI degradation analysis, and troubleshooting methodologies
• Knowledge of software lifecycle management, patching, upgrades, and configuration management
• Experience with multivendor telecom environments and operational support models
• Good understanding of automation, analytics, Machine…