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Vodafone Logo Vodafone · IT - Administration

Quality E2e & Core Performance Lead

United Kingdom, London Employment contract · Job Posted April 27, 2026
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Job Description

This is a role within Mobile Network Quality function, ensuring mobile core network performance trends are improving, delivering positive customer experience and enabling benchmarking marketing claims. It drives root cause analysis of the most critical E2E customer issues. It requires strong technical insight and analytical capability. It assures stakeholder confidence through regular core performance reporting.

Job Responsibility

  • Act as the subject matter expert on mobile performance, specialized in core aspect of it, within NQCXI department, enabling effective prioritization of wider Networks department actions to improve customer experience (rNPS) and achieve marketing claims (UK’s Best Network, etc.)
  • Represent NQCXI department in Networks engineering forums, building strong relationships, to provide timely information to NQCXI team on ongoing Core activities, and to provide impact analysis of said Core activities to everyone
  • Lead the analysis and provide regular insights into mobile core network performance deviations that impact customer experience and mobile network benchmarking results
  • Conduct E2E trace analysis of critical customer and network issues to identify root causes and drive resolution
  • Provide regular mobile core network performance reporting to the wider Networks department
  • Provide technical leadership and mentoring to junior analysts and mobile performance reporting teams within wider NQCXI department, fostering a culture of innovation and accountability
  • Support mobile network benchmarking and supplier performance initiatives with an end-to-end lens

Requirements

  • Deep understanding of Core network architecture and performance monitoring
  • In-depth understanding of mobile network technologies, including 2G (GSM), 3G (UMTS), 4G (LTE), and 5G NR, with a focus on mobile core network architecture (IMS, MMEs, GiLAN chains…) and performance characteristics
  • Expertise in mobile core optimisation techniques, such as TCP Optimisation techniques, traffic shaping, etc.
  • Knowledge of key mobile performance KPIs, such as call setup success rate (CSSR), drop call rate (DCR), throughput, latency, and coverage metrics, and how they correlate with customer experience indicators like rNPS
  • Ability to translate complex technical models and performance insights into clear, compelling narratives, tailored for both technical and non-technical audiences, enabling effective decision-making across the business
  • Experience mentoring technical teams, with the ability to guide junior analysts and reporting teams in analytical best practices, model development, and performance interpretation
  • Strong stakeholder engagement and cross-functional collaboration skills

What we offer

  • Excellent basic salary plus bonus and Vodafone benefits
  • Up to 28 days off plus bank holidays
  • Paid time for charity work
  • Discounts
  • Vouchers
  • Pension plan
  • Amazing learning tools
  • Top-notch parental leave policies
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