Problem Manager - Core

Responsibilities

• Own the end-to-end Problem Management lifecycle for Core Network domains, including CS Core and Packet Core.
• Lead root cause analysis (RCA) for major and recurring incidents to ensure permanent corrective actions are implemented.
• Coordinate cross-functional resolution activities with L2/L3 operations, engineering teams, and external vendors.
• Track and analyze incident trends to identify systemic issues and propose preventive service improvement plans.
• Drive preventive and corrective maintenance initiatives to reduce incident recurrence and enhance network stability.
• Review and validate network changes to identify and mitigate potential operational risks.
• Produce and maintain technical documentation, including problem records, knowledge articles, and runbooks.
• Provide technical guidance and mentorship to L2 operations engineers to ensure high-quality process outputs.

Requirements

• 7–14 years of experience in Telecommunications.
• 5–8 years of strong domain experience in CS Core and/or Packet Core.
• Solid knowledge of ITIL Problem Management processes and operational best practices.
• Deep understanding of 3GPP standards and signaling protocols (SIP, Diameter, BICC, SIGTRAN, CAMEL, MAP, etc.).
• Strong technical knowledge of 2G/3G/4G core network nodes and signaling flows.
• Hands-on experience with voice core nodes (MSC, MGW, STP, UDC, APG) and packet core nodes (SGSN/MME, GGSN/EPG, SAPC/PCRF).
• Familiarity with IMS call flows, 5G (NSA & SA) architectures, and GRX architecture.
• Strong Linux skills and familiarity with virtualization, cloud NFVI/NFVO, and cloud infrastructure.
• Excellent analytical, troubleshooting, and stakeholder management skills.

About the Company

Ericsson is a global leader in communications technology, driving innovation to build solutions for the world's toughest connectivity challenges. We foster a diverse and inclusive environment where innovators collaborate to craft the future of telecommunications.