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.What your work will consist of?- 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- Team lifecycle, templates, naming conventions, expiration & archival- Channel governance, granular permission models, and private/shared channels- Teams meeting policies, voice configurations, Teams Rooms, and compliance recording- Teams App governance: policies, app permission setups, third‑party integrations- 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.OneDrive for Business Expertise- 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.Identity & Security (Entra ID + Zero Trust)- Implement and maintain identity governance, including access reviews, entitlement management, identity lifecycle, and privileged identity management.- Configure Conditional Access, MFA enforcement, Identity Protection, and secure collaboration policies.- Contribute to Zero Trust strategy across identity, devices, applications, and data.- Lead design, implementation, and enhancement of Modern Workplace standards, operational frameworks, and administrative automation.- 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.Cross-Team Collaboration & Operational Support- 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.- Continuously identify areas for improvement in collaboration, compliance, automation, and overall M365 service maturity.- Lead or participate in projects related to cloud transformation, collaboration modernization, and digital workplace optimizationMaintain IT assets inventory via ITAM practices.- Ensure clear, consistent IT communication aligned with GDELS IT strategy.- Use predefined templates and standards for announcements, outages, and updates.- Promote inter-site collaboration and knowledge sharing across IT teams.- Facilitate onboarding and training sessions for new users and technologies.- Collaborate with security teams on vulnerability management and threat detection.What is the profile required?- 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).- Excellent problem-solving and analytical skills- Strong communication and collaboration skills- 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- Highly committed- Advanced English written and spoken, Spanish and/or German is a plus- Strong analytical and conceptual thinking.- High degree of initiative and responsibility.What do we offer?- Be part of a large international group, a leader in the defense sector.- Participate in major national and international projects.- Join a highly qualified team where you can develop a solid professional career.- Excellent working environment in a proactive and collaborative setting.- Versátil compensation package, with benefits such as childcare, transportation, or training.- Continuous working hours and flexible scheduling.- Opportunity to travel and geographic mobility.2026 GDELS — General Dynamics European Land Systems. All rights reserved.#J-18808-Ljbffr

📌 ItExpert (Madrid)
🏢 General Dynamics European Land Systems
📍 Madrid