Voice Core Signalling

Main activities and tasks : 

• Determine and lead on all aspects of signalling design configuration to ensure that we have a robust, cost-effective signalling network of high integrity to support the growth of the existing GSM/GPRS/3G/4G/5G networks.
• Support the Signalling Design, Architecture, and Planning manager in evolving the architecture to support 2G/3G/4G & 5G networks.
• Capacity planning and performance monitoring and management of the signalling network.
• Production of integration plans for the introduction of new nodes and platforms.
• Maintaining the Magnet asset database in order to ensure data integrity for MTP, SCCP, link monitoring, and signalling devices.
• Maintenance and control of the LLD documentation to ensure data integrity.
• Produce structural, functional, and physical design documents for Network elements.
• Produce plans to establish signalling architecture changes.
• Supplier liaison to identify element functionality.
• Dimension signalling/IP elements to meet forecast demand.
• Evaluate any signalling anomalies and design/plan resolutions to maintain signalling network integrity.
• Represent the signalling team for new company initiatives and identify impacted areas.
• Identify and assess the impact of new protocol standards and produce Statement of Requirements for vendors to meet network evolution requirements.
• Review supplier Statement of Compliance documents.
• Produce signalling impact assessments.
• Identify and maintain a database of the relevant protocol versions currently in use within the O2 SS7 network.
• Produce high-level call flows for 2G/3G/4G & 5G services.

Specific skills & technical knowledge:

• Proven knowledge of Ericsson Switching platforms (MSC, MBC) using Command handling/WinFiol.
• Excellent working knowledge of Ericsson MGW Platform (V3, V4).
• Working knowledge of Ericsson HLR & HSS (MAP, SCCP GT).
• Good working knowledge of SBG, IP works/DNS, IMS Core Nodes.
• Excellent working knowledge of Signalling systems and planning with TDM, IP signaling.
• Excellent working knowledge of Signalling protocols SIP, ISUP, MAP.
• Good understanding of IN call flows SSF <> SCF (CAMEL, INAP).
• Good understanding of analysing PCAP traces in WireShark (SIP, ISUP, INAP, CAMEL).
• Good working knowledge of ELEX Ericsson database.
• Good understanding of IP networks.
• The ability to translate high-level network requirements into detailed plans to deliver network functions and capabilities.
• Working knowledge of Performance platforms such as Proptima (MYCOM) to understand reports, counters, and metrics.
• Experience gained within a network design, development, or planning role with a public network operator or supplier organisation.
• Ability to work as part of a team.
• Ability to perform job functions when under pressure and delivering to tight deadlines.
• Ability to remain calm and courteous with demanding/difficult customers and/or situations.
• Ability to provide concise and clear written and verbal reports.
• Ability to work independently.
• Fluent communication in English.

Required Education & Trainings:

• 5-10 years’ minimum experience of working in the Telecoms industry.
• Experience of producing and delivering customer presentations.
• Proven ability to interact with diverse customers in a multi-cultural environment
• Diploma, degree, or above in a relevant discipline.

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 – 25 days of holiday plus bank holidays.