.What You'll Do:In the Procurement Department, and as part of the Global Category Team reporting to the IT Procurement Manager in charge of Internal IT, R&D and Insurance, your role will be to manage the following categories - IT Outsourcing, Ad-hoc IT/R&D contractors and All Non-Enterprise IT related SaaS (such as: Sales & marketing, Database management software, Identity Access Management, Network...). We are therefore looking for our new Senior IT Buyer. If you are an IT procurement professional and a tech addict, willing to work in a fast-paced environment, eager to embrace changes and ready to support Criteo's transformation, please give us a shout.Developing sourcing strategies for: Software to streamline them as much as possible, Outsourcing & Contractors in order to make sure it is well optimized (Nearshore/ Offshore)Collaborate with internal business partners and suppliers to reduce total costs and risksLeading RFx, and achieving cost savings through negotiationsOrganize internal coordination of RFPs between different engaged teams: Business, IIT, Trust & Compliance, Legal and FP&ADeveloping and maintain metrics to hold suppliers accountable for performance and deliveryContributing to improve Procure-to-Pay processes and tools to drive efficiency and added value services across business and Finance teamsHigh capacity to handle different and numerous projects in parallel while doing good prioritizationCommunicating appropriately and establishing strong partnership with internal business stakeholders and with suppliersAnalyzing category data and metrics to enforce Procurement category strategies and understanding customers' needs and concerns, across categories and regions, to influence customers' prioritiesLeading Supplier Relationship Management (SRM) with strategic suppliers and with internal stakeholders to ultimately improve supplier performance and to strengthen business partnershipsOur promise is a genuine Category Management position, fully hands-on, with the capacity to change things, to bring up new ideas and make the difference