As an IT M365 Expert , you are responsible for the design, development, and reliable operation of our cloud-based Modern Workplace environment built on Microsoft 365. You ensure that employees have secure, efficient, and high-performing digital workplace solutions. You collaborate closely with IT Security and Networking team.

Core Microsoft 365 Platform Ownership Operate, maintain, and optimize all core M365 workloads, with specialized mastery in Microsoft Teams, SharePoint Online, OneDrive for Business, Exchange Online, and Entra ID. Ensure continuous availability, performance, scalability, and reliability of the entire M365 ecosystem, including collaboration workloads and content services. Oversee tenant-wide configuration, service health monitoring, adoption governance, and lifecycle management.

Microsoft Teams Expertise

Teams meeting policies, voice configurations, Teams Rooms, and compliance recording Ensure seamless collaboration by configuring Teams SharePoint integrations, inheritance models, and permissions alignment. (Aligned with your organization’s use of Teams as primary data workspace) Provide expert guidance in Teams-driven document management, versioning, secure sharing, and data classification. SharePoint Online Expertise Architect, implement, and manage SharePoint Online site collections, hubs, information architectures, metadata structures, libraries, lists, and DLP-enforced collaboration policies. Oversee permission governance using Azure/Entra groups, role-based access, and scalable permission models. (Supports the defined model of RW/RO Azure Security Groups for SharePoint inheritance) Support organizational initiatives such as intranet evolution, content migration, data restructuring, and site administration for business units.

Govern

OneDrive environments, including synchronization controls,



sharing restrictions, storage policies, and user onboarding. Enable user adoption and transition away from legacy file servers, supporting organizational strategy to promote Teams + OneDrive modern data access models.

Exchange

Online (EOX) Ownership Full administrative control of mail flow, transport rules, connectors, accepted domains, compliance integrations, message tracing, and security configurations. Oversee hygiene controls (DKIM, DMARC, SPF), anti-phishing, and secure email routing. Lead mailbox provisioning, migration, hybrid coexistence, and associated governance.

Compliance, Retention & Governance (Microsoft Purview) Design, implement, and enforce retention policies, retention labels, records management, and legal hold strategies across all M365 workloads. Maintain data lifecycle governance using Purview capabilities such as audit, eDiscovery, Insider Risk, communication compliance, and sensitivity labels. Ensure compliance with corporate, legal, and regulatory retention requirements, including defensible deletion and immutable record preservation.

Collaborate with Legal, Data Protection, and Security teams to respond to audits and discovery requests. Contribute to Zero Trust strategy across identity, devices, applications, and data. Develop automation solutions using PowerShell, Graph API, Power Platform, and workflow integrations.

Evaluate, pilot, and deploy new Microsoft 365 features,



ensuring proper change management, communication, and documentation.

Support Service

Desk and operational teams with deep-dive issue resolution, root-cause analysis, and best-practice guidance. Deliver training, workshops, user enablement content, and capability development for internal teams. Maintain close collaboration with IT Security, Networking, and Architecture teams to ensure a unified and secure digital environment.

Create and maintain comprehensive technical documentation, governance guidance, support runbooks, and user guides. Lead or participate in projects related to cloud transformation, collaboration modernization, and digital workplace optimization Maintain IT assets inventory via ITAM practices. Ensure clear, consistent IT communication aligned with GDELS IT strategy.

Promote inter-site collaboration and knowledge sharing across IT teams. Facilitate onboarding and training sessions for new users and technologies. Bachelor's degree in Computer Science, IT, or related field Minimum 5+ years of experience as a System Engineer with a focus on Microsoft M365.

Good understanding of IT security, Zero Trust, and cloud governance. PowerShell scripting Experience with automation (PowerShell, Graph API). IT certifications (Microsoft MS-102, SC-300, MD-102, AZ-104) and ITIL Foundation Ready to occasionally work late hours or on weekends for Patches/Updates/Rollouts Advanced English written and spoken, Spanish and/or German is a plus Participate in major national and international projects.

Join a highly qualified team where you can develop a solid professional career. Adaptable compensation package, with benefits such as childcare, transportation, or training. 2026 GDELS - General Dynamics European Land Systems.

📌 IT Support Specialist / Helpdesk / IT Service Desk/ (Madrid)
🏢 General Dynamics European Land Systems
📍 Madrid