Senior SharePoint Platform Architect / Administrator

Mission Context :

You will join the Infrastructure & Operations (I&O) department, reporting to the Digital Workplace Manager.

The Digital Workplace - SharePoint team delivers enterprise-grade content and collaboration solutions across the Microsoft ecosystem, covering the full information lifecycle: capture, processing, storage, governance, and digital distribution (intranet, portals, applications).

Within this environment, the SharePoint Platform Architect / Administrator plays a key structural and governance role, ensuring the platform is secure, scalable, governed, and aligned with Microsoft best practices, while enabling business autonomy in a controlled way.

Your Responsibilities

Architecture & Governance :

• Define, document, maintain, and evolve the SharePoint architecture (Online and On-Prem) in alignment with corporate IT standards
• Ensure architectural coherence across SharePoint, Microsoft 365, and Power Platform
• Establish and enforce architectural governance, ensuring all solutions comply with defined standards
• Validate solution designs upfront via formal governance and demand-management processes
• Act as architectural authority in review boards and governance instances

Platform Administration & Operations

• Provide hands-on technical administration of the SharePoint platform
• Ensure platform stability, security, performance, storage optimization, and cost control
• Actively optimize storage usage and life-cycle management
• Maintain documentation, technical standards, patterns, and reference architectures

Power Platform Governance

• Define and maintain the governance framework for Power Apps, Power Automate, and related low-code solutions
• Guide and control business-driven developments to ensure: Alignment with target architecture, Security and compliance, Maintainability and reusability, Cost and license control
• Prevent shadow IT by enabling autonomy within a clear, structured framework

Stakeholder Engagement

• Translate business needs into sustainable, architecturally aligned solutions
• Support users and teams in document management architecture choices
• Support users in process and document automation
• Communicate architectural vision and standards clearly to IT, business, and partners
• Coach teams and raise maturity across Digital Workplace initiatives

Required Technical Expertise

Core Technologies

• SharePoint Online - Advanced (recent, hands-on experience required)
• SharePoint On-Prem - Expert (recent, hands-on experience required)
• Microsoft Power Platform (Power Apps, Power Automate) - Advanced
• Microsoft 365 / Digital Workplace ecosystem
• Architecture & governance frameworks

Key Capabilities

• Designing and governing enterprise-scale SharePoint architectures
• Defining document management architectures (metadata, permissions, structures)
• Governing low-code/no-code platforms in large organizations

Languages

• Dutch or French - Native or bilingual (mandatory)
• English - Professional level (nice to have)