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We are seeking a skilled professional to support, manage, and optimise IMS and CS Core network elements to ensure the stability, reliability, and quality of voice and multimedia services. The individual will contribute to incident resolution, performance analysis, configuration activities, software lifecycle management, and collaboration with cross‑functional teams and external partners. This role is well‑suited for those who thrive in dynamic operational environments and are committed to continuous improvement.
Job Responsibility:
Core Network Support: Support IMS network elements including Ericsson MTAS, CSCF, HSS, IPWorks, MSC, MGW, SBC, and STP
Maintain service availability, performance, and compliance with operational processes
Participate in 24x7 on‑call rotation for proactive and reactive support
Assist in service introduction and handle supplier engagement
Incident & Problem Management: Respond promptly to service degradations and major incidents
Perform root cause analysis and workarounds to minimise service disruption
Collaborate across teams to ensure timely resolution
Performance & Availability Management: Act as system owner, overseeing platform support
Monitor KPIs, analyse performance trends, and support improvement forums
Review network changes to safeguard service integrity
Proactive Service Assurance: Carry out regular health checks and KPI monitoring
Conduct resilience and failure analysis
Engage with vendors for continual improvement initiatives
Network Configuration Work: Perform fraud barring for A and B numbers
Configure new number ranges on the Vodafone network
Support isolation of nodes from MSC for other teams
Supplier & Third‑Party Management: Support vendor issue resolution and track SLAs
Participate in compliance audits
Change Management & New Service Introduction: Ensure changes are implemented safely and efficiently
Follow testing, documentation, and governance protocols
Software Rollout (LCM): Load new software in lab environments, progressing to live deployment post‑testing
Knowledge Sharing & Training: Facilitate knowledge transfer within the team and wider organisation
Provide guidance to less experienced colleagues and frontline teams
Maintain clear stakeholder communication
Requirements:
Strong understanding of IMS architecture (CSCF, MTAS, HSS, SBC) and CS Core nodes (MSC, MGW)
Skilled in telecom protocols such as SIP, Diameter, SS7, SIGTRAN
Experienced in VoLTE/VoNR call flows and IMS registration
Familiar with virtualisation platforms (VMware, OpenStack) and Linux systems
Capable of troubleshooting using tools and scripting (Python/Bash preferred)
Comfortable working in high‑pressure, 24x7 operational environments
Effective communicator with strong collaboration abilities
Adaptable to emerging technologies including NFV, SDN, and Cloud IMS
Holds a Bachelor’s degree in Telecommunications, Electronics, or Computer Engineering
Possesses 8–12 years of experience in IMS and CS Core operations, ideally across multi‑vendor environments
Certifications such as CCNA/CCNP are preferred
What we offer:
Opportunity to work on cutting‑edge IMS and CS Core technologies within a global telecommunications environment
Exposure to multi‑vendor systems and advanced network architectures
Collaborative work with cross‑functional teams and international partners
Opportunities to contribute to optimisation initiatives and service enhancement
Experience in end‑to‑end lifecycle management of network platforms