Problem Manager - Core

Job Description

As a Problem Manager Core Domain, your role will involve managing, analyzing, and preventing recurring incidents across large-scale CS & PS Core Networks and Core Network Infrastructure. You will be responsible for root cause analysis, trend analysis, stakeholder coordination, and continuous service improvement by closely working with L2/L3 operations, vendors, and engineering teams.Key Responsibilities:- Own and manage the end-to-end Problem Management lifecycle for Core Network domains (CS Core & Packet Core)- Perform root cause analysis (RCA) for major and recurring incidents and ensure permanent corrective actions- Coordinate with L2/L3 operations, engineering, vendors, and external stakeholders to drive problem resolution- Track and analyze incident trends, identify systemic issues, and recommend preventive measures- Ensure problem resolution activities are delivered within agreed SLAs and OLAs- Drive preventive and corrective maintenance initiatives to reduce incident recurrence- Review and validate network changes to ensure risks are identified and mitigated- Perform network configuration audits and support service stability improvements- Provide technical guidance and mentorship to L2 operation engineers to ensure process consistency and quality- Create and maintain problem records, knowledge articles, and best practices documentation- Lead post-incident reviews, major incident follow-ups, and service improvement plans- Support continuous improvement initiatives and operational excellence programs- Handle day-to-day problem reporting, dashboards, and management updatesQualifications Required:- 7 to 14 years of experience in Telecommunications- 58 years of strong domain experience in CS Core and/or Packet Core- Solid understanding of ITIL Problem Management processes and operational best practices- Clear understanding of 3GPP standards and protocols such as SIP, Diameter, BICC, SIGTRAN, CAMEL, MAP, etc.- Strong understanding of 2G/3G/4G Core Network nodes, protocols, and signaling flows- In-depth knowledge of voice core scenarios and signaling flows- In-depth knowledge of data core scenarios and signaling flows- Strong hands-on experience with Voice Core CS nodes such as MSC, MGWs, STP, UDC, APG, etc.- Very good knowledge of Packet Core nodes including SGSN-MME, GGSN (EPG), SAPC (PCRF)- Good understanding of Packet Core surrounding nodes (IMS, OCC, IPWorks DNS, Charging Nodes)- Understanding of 5G NSA and 5G SA architectures and call flows- Deep knowledge of roaming data and call flows, including GRX architecture- Strong understanding of IMS call flows- Excellent IP networking background- MPBN knowledge- Very good knowledge of Linux operating systems- Good understanding of Virtualization, Cloud NFVI, NFVO, and cloud infrastructure- Strong analytical, troubleshooting, and presentation skills- Ability to plan and execute context-specific analysis and problem-solving frameworks in collaboration with stakeholders and vendors- Ability to innovate and drive improvement initiatives that enhance service stability and customer experience- Self-driven, self-motivated, ambitious, and effective in handling complex operational challenges- Excellent communication skills (verbal & written) with strong customer and stakeholder handling capabilities As a Problem Manager Core Domain, your role will involve managing, analyzing, and preventing recurring incidents across large-scale CS & PS Core Networks and Core Network Infrastructure. You will be responsible for root cause analysis, trend analysis, stakeholder coordination, and continuous service improvement by closely working with L2/L3 operations, vendors, and engineering teams.Key Responsibilities:- Own and manage the end-to-end Problem Management lifecycle for Core Network domains (CS Core & Packet Core)- Perform root cause analysis (RCA) for major and recurring incidents and ensure permanent corrective actions- Coordinate with L2/L3 operations, engineering, vendors, and external stakeholders to drive problem resolution- Track and analyze incident trends, identify systemic issues, and recommend preventive measures- Ensure problem resolution activities are delivered within agreed SLAs and OLAs- Drive preventive and corrective maintenance initiatives to reduce incident recurrence- Review and validate network changes to ensure risks are identified and mitigated- Perform network configuration audits and support service stability improvements- Provide technical guidance and mentorship to L2 operation engineers to ensure process consistency and quality- Create and maintain problem records, knowledge articles, and best practices documentation- Lead post-incident reviews, major incident follow-ups, and service improvement plans- Support continuous improvement initiatives and operational excellence programs- Handle day-to-day problem reporting, dashboards, and management updatesQualifications Required:- 7 to 14 y

Keyskills :
SIPDiameterBICCSIGTRANCAMELMAPIP networkingMPBNVirtualizationAnalytical skillsTroubleshooting skillsPresentation skillsCommunication skillsITIL Problem Management processes3GPP standards2G3G4G Core Network nodesVoice Core scenariosData Co