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Senior Category Manager

adgbl · London, Westgate · United Kingdom · Hybrid

Posted Oct 8, 2026

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We help partners understand the changing advertising landscape. Specialising in audience measurement, consumer targeting and in-depth intelligence into paid, owned and earned media, their global coverage and local expertise enable better understanding of media audiences and their relationships with brands. Job Details Fifty5Blue is a global leader in media measurement and analytics, operating in more than 80 countries. We bring clarity to complexity. Our independent, hybrid cross-media audience measurement combines trusted audience panels with large-scale data to establish a single, coherent view across platforms and markets. This gives content owners, advertisers, agencies and platforms the clarity and confidence to develop content and plan advertising decisively. With deep expertise across global media systems, we design integrated, comparable measurement frameworks that support a more consistent and accountable media market. Job Title: Senior Category Manager Location: London, Westgate Employment Type: Permanent Department: Procurement #LI-Hybrid #LI-DM1   * This is a full-time permanent position, based in our London office. We operate on a hybrid working arrangement and require a minimum of 2 days in the office. We welcome all applications from those with the legal right to live and work permanently in the UK, without requiring VISA sponsorship now or in the future.  Overview: An exciting opportunity to join a greenfield Procurement function in a fast moving, dynamic global environment. The role will help manage approximately $95m of spend across Technology and Operations, combining operational sourcing with selected central technology category activities. Reporting to the Technology and Operations Procurement Director, the Senior Category Manager will work closely with Technology and Operations leaders to develop and implement procurement strategies, lead go to market activities and improve how the categories operate. The role will primarily focus on Operations related spend, primarily Data, Insights & Research Services, alongside selected Technology category activities. Key Responsibilities Lead category strategies across Data Acquisition, Research Services, Panel & Incentive Management Services, while supporting selected Technology procurement initiatives and strategic supplier relationships. Lead end to end sourcing and go to market activities, including requirements definition, market engagement, evaluation, negotiation, contracting and implementation. Take ownership of established and developing categories, simplifying fragmented activity and introducing clear processes, governance and sourcing strategies. Make procurement easier for stakeholders by creating practical, efficient ways of working while maintaining appropriate commercial controls. Deliver measurable savings, cost avoidance and wider commercial value through spend analysis, demand management, supplier negotiation and effective…