Olivier Arnold

Strategic advisor for a €150M, 15-year datacenter deployment program, defining long-term partnership frameworks and end-to-end sourcing strategy for a multi-site, highly resilient infrastructure. ▪ Structured the governance, supplier ecosystem and contractual models to secure capacity, resilience and cost visibility under evolving geopolitical risks. ▪ Led cross-functional alignment of business, technical, security and operations stakeholders to translate business needs into a coherent, executable sourcing and supply chain roadmap. ▪ Designed technical and commercial specifications for public tenders covering building, electrical, IT, physical security, access control and monitoring systems.

Led strategic procurement for a €160M datacenter & infrastructure programme at Euroclear, aligning sourcing strategy with an Agile transformation and cross-functional teams. ▪ Conducted contractual and operational risk assessments, re-balanced supplier relationships, and strengthened governance to secure delivery, quality and cost. ▪ Coached and energized an 8-person procurement team, promoting value creation, transparency and structured supplier performance management. ▪ Drove full synchronization of procurement activities with business and technical teams in a critical banking infrastructure context.

Managed strategic RFQs and tenders for access network and backbone infrastructure at Proximus, in a mixed public/private tender context, with strong focus on TCO and long-term supply security. ▪ Delivered over €10M in structural recurring cost savings while ensuring ESG and global T&Cs compliance. ▪ Optimized the supplier base and contract landscape to support network rollout, resilience and continuity objectives. ▪ Conducted contract auditing and compliance reviews across a multi-vendor, multi-technology sourcing environment.

For ELIA • Directed price crisis resolution and coached other buyers on the implemented framework • Orchestration of all vital procurement activities for the Ventilus program, valued at over €1.2 billion. • Managing and awarding ten Tenders in Ariba for the “Works” department for substations.

Founded and led DATA-Z, a boutique consultancy delivering Tier III datacenter turnkey programs, strategic procurement and B2B sales solutions to major Belgian operators, in a triple executive capacity. AS PROGRAM DIRECTOR (MEP Lead on large-scale projects) ▪ Designed and delivered two Tier III datacenters end-to-end (electrical, UPS, ATS, fire suppression, CCTV, access control, IT edge infrastructure, DCIM) — including building permits and structural engineering for one customer. ▪ Directed monthly power resilience testing across 65 datacenters and coordinated NLYTE NEO-NAO DCIM deployment; DATA-Z became NLYTE certified reseller. ▪ Led infrastructure audit and full re-engineering of Mediarive "The Voice" Studio (electrical design, rooftop generator, stability assessment). ▪ Coordinated public tender for CIRB/BPS (Brussels Crisis Centre) with PolBru, PolFed and SIAMU. AS PROCUREMENT DIRECTOR ▪ Managed end-to-end sourcing, supplier coordination and purchasing for all datacenter programs. ▪ Conducted a comprehensive supply chain audit in China to optimize procurement of critical components. ▪ Oversaw procurement of all civil, electrical, IT and security works across multi-site programs. AS SALES DIRECTOR ▪ Developed and managed B2B client portfolio including major Belgian telecom operators and public institutions. ▪ Delivered turnkey WiFi installation programs across 50+ buildings in Charleroi (AP Meraki). ▪ Managed OM3/OM4/CAT6A cabling certifications (SPW, BeTV, WDC) across multiple sites.

Initiated the transformation of business procurement operations to enhance collaboration with sales teams, leveraging strategic frameworks (TCO, Porter’s Forces, Kraljic, AFCB). Optimized business procurement for a diverse technical portfolio (IoT, Cloud, back-haul, network...) & fostering cost-saving initiatives (multi-sourcing, rebates, framework agreements, partnership programs, product optimization...) and cultivate strong relationships with key suppliers, ensuring collaboration on innovation & cost reduction, for a spent above €315million. Results: Improved hit rates by 10% & project margin by 5%. Secured per project improved (5%) Secured €1.5million in annual recurring cost reductions through strategic contract negotiations.

Led strategic procurement and supply chain initiatives at VOO, managing €150M annual spend across multiple high-tech categories with immediate cost savings and supplier performance improvements. ▪ Drove the design and implementation of an end-to-end supply chain management system (IS-Tools) for HFC parts, enabling real-time tracking, warehouse risk management and full goods traceability. ▪ Delivered structural cost savings and supplier performance improvements through SRM programs and spend control strategies. ▪ Designed the target supply chain model and business requirements for top management, supporting lean management and smart future supply chain improvements.

As Outsourced Service Provider providing consultancy advise on the following topics: • Market Survey • Sourcing Strategy • Technical Specification to allow best and fair competition • Partnership with Manufacturers • Business Requirements processes, demand management, E-2-E supply chain. • TCO / TVO • Delivery systems

Consultancy assignment: • Reporting to Senior Managers and Executives • Analyze market and delivery systems to ensure material availability. • Control purchasing department budgets. • Develop and implement purchasing and contract management instructions, policies, and procedures. • Review, evaluate, and approve specifications for issuing and awarding bids. • Prepare and process requisitions and purchase orders for supplies and equipment. • Strategic partnership with specific vendors. • Prepare bid awards requiring board approval. • Represent company in negotiating contracts and formulating policies with suppliers. • Optimizations on TCO and TVO

Loss adjustment expertises for Insurance companies (Ethias, Axa, P&V, Vivium, Avero…). Insurance Law training, negotiations refining.

Engagement as Freelance As PSP for Finance Dpt : In SAP ABAP, Analyze Orders Booked, Net Sales, Service orders, Sales orders COS, RUC, WIP… and provide instructions. As Project Manager for Indoor Project for Mobistar Roll-Out : E-to-E management from Purchase to Site Building to invoice.

Engagement for Catep Conseil www.catep.com, held by Astek Group Program Management of the Implementation of Microwave Network (2200 TN,3 years,50 million €, 30 people)

Engagement for Catep Conseil www.catep.com, held by Astek Group Coordination of all activities related to Roll-Out of 2G (DCS-EGSM) and HSDPA for BASE, as Team Leader of 15 collaborators and 10 subcontractors. Financial and operational control, SLA – KPI control and Customer interface for steering committee meetings

Engagement for LCC Belgium (held by LCC : www.LCC.com) "Site Manager", involved to the project lifecycle (acquisition to acceptance) and responsible for the management of the Roll-Out a batch of GSM-DCS-EGSM-UMTS sites

Engagement for LCC Belgium (held by LCC www.LCC.com) Manage the Roll-Out of 3G mobile sites for Mobistar

Engagement for LCC Belgium (held by LCC : www.LCC.com) "Site Manager", involved to the project lifecycle (acquisition to acceptance) and responsible for the management of the Roll-Out a batch of GSM-DCS-EGSM-UMTS sites

Engagement for DETRON (LCC Belgium) "Site Engineer", responsible for the construction of a batch of UMTS (3G ) site upgrades and new builds 3G in Wallonia. Learning Proximus construction processes & coordination of sites’ construction (from RTB to final acceptance) included individual Budget control.