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Network Assurance Manager

Job in Greater London, London, Greater London, EC1A, England, UK
Listing for: Lebara Media Services Private Ltd
Full Time position
Listed on 2026-01-13
Job specializations:
  • IT/Tech
    IT Support, IT Project Manager, Cybersecurity
Job Description & How to Apply Below
Location: Greater London

Responsibilities Service Assurance

  • Own end-to-end service assurance for IT and network services, ensuring agreed SLAs, KPIs, and customer experience targets are met.
  • Monitor service performance, availability, and capacity across core network, access, IT platforms, and third-party services.
  • Lead proactive service reviews with suppliers and internal stakeholders to identify risks and improvement opportunities.
  • Ensure service monitoring, alerting, and reporting are effective and continuously improved.
Problem Management
  • Own the Problem Management process in line with ITIL best practice.
  • Lead root cause analysis (RCA) for recurring incidents and major outages.
  • Drive permanent corrective actions and track them to closure.
  • Analyse incident and problem trends to reduce repeat issues and improve service stability.
  • Ensure lessons learned are captured and embedded into operational processes.
Change Management
  • Own and govern the Change Management process across IT and network environments.
  • Assess, approve, and schedule changes to minimise service risk and customer impact.
  • Chair Change Advisory Board (CAB) meetings and ensure high-quality change documentation.
  • Ensure post-implementation reviews (PIRs) are completed and actions followed up.
  • Balance business agility with operational stability.
Incident & Major Incident Support
  • Provide leadership during major incidents, coordinating internal teams and suppliers.
  • Ensure clear communication to stakeholders during service outages.
  • Support continuous improvement of incident response and recovery processes.
Supplier & Stakeholder Management
  • Act as a key operational interface with network partners, IT vendors, and managed service providers.
  • Hold suppliers accountable for service performance, incident resolution, and problem remediation.
  • Collaborate closely with NOC, IT operations, product, and customer care teams.
Governance & Continuous Improvement
  • Ensure operational processes align with ITIL and internal governance standards.
  • Produce regular service performance reports for senior management.
  • Drive automation, tooling improvements, and operational efficiencies.
  • Support audits and compliance activities as required.
Skills
  • Proven experience in network assurance, service assurance, or operations management within telecoms or IT.
  • Strong hands‑on experience with Change Management and Problem Management.
  • Experience operating in a multi-supplier / MVNO / outsourced environment.
  • Solid understanding of telecoms networks (core, access, signaling) and IT platforms.
  • Strong incident and major incident management experience.
  • Excellent stakeholder management and communication skills.
  • ITIL knowledge (ITIL v3 or v4 certification preferred).
  • Experience working with mobile network operators or MVNOs.
  • Familiarity with service monitoring tools, ticketing systems, and automation platforms.
  • Experience driving operational transformation or service improvement initiatives.
  • Calm and decisive under pressure.
  • Analytical with strong root‑cause problem‑solving skills.
  • Detail‑oriented but able to see the bigger picture.
  • Collaborative, with the confidence to challenge suppliers and internal teams.
  • Customer‑focused mindset with a passion for service quality.
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