.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 ensure optimization (Nearshore/Offshore).- Collaborate with internal business partners and suppliers to reduce total costs and risks.- Leading RFx and achieving cost savings through negotiations.- Organize internal coordination of RFPs between different engaged teams: Business, IIT, Trust & Compliance, Legal, and FP&A.- Developing and maintaining metrics to hold suppliers accountable for performance and delivery.- Contributing to improve Procure-to-Pay processes and tools to drive efficiency and added value services across business and Finance teams.- High capacity to handle different and numerous projects in parallel while doing good prioritization.- Communicating appropriately and establishing strong partnerships with internal business stakeholders and with suppliers.- Analyzing category data and metrics to enforce Procurement category strategies and understanding customers' needs and concerns, across categories and regions, to influence customers' priorities.- Leading Supplier Relationship Management (SRM) with strategic suppliers and with internal stakeholders to ultimately improve supplier performance and strengthen business partnerships.Our promise is a genuine Category Management position, fully hands-on, with the capacity to change things, bring up new ideas and make a difference.Who You Are:- Master in Business (or equivalent), Procurement & Supply Chain, or Engineering.- Significant experience in a Procurement organization performing vendor management, contract management, negotiating complex purchases, and running RFx.- Mandatory experience related to software and services/contractors.- Strong leader who can drive category strategies and build strong relationships and trust with key stakeholders while challenging the status quo.- Knowledgeable about the supply market and supplier capabilities, technically and geographically.- Demonstrated ability as a Project Manager who can prioritize workload and manage complex projects within cost and schedule.- Strong analytical and organizational skills.- Collaborative, but also able to work with significant autonomy.- Fluent in English.- Out of the box thinking and curiosity are must-haves