Imagine stepping into a role where every system you manage directly supports teams working on mission-critical, high-impact technology. As aSystems & Networks Administrator, you’ll be a key player in managing, securing, and optimizing a diverse IT environment across the organisation.This is a true“jack of all trades”role, idóneo for someone with deep hands‑on experience across Microsoft 365, AWS, Jira, Windows Server, and network infrastructure, paired with a strong, proactive security mindset. You’ll ensure the reliability, scalability, and security of the systems that power day‑to‑day operations and future growth.What You’ll DoAdminister, monitor, and optimizeMicrosoft 365services (Exchange Online, Share Point, Teams, Defender, Entra ID, Intune)Manage and maintainAWS cloud infrastructure, including identity sources, networking, security controls, HPC, SAML, and Route53SupportWindows Server environments, including Active Directory, file services, patching, and backupsAdminister and customizeAtlassian Jira and Confluence, aligning tools with team workflows and integrationsSupport network infrastructure includingswitches, routers, firewalls, VPNs, site connectivity, and basic SD‑WANDesign and maintain network layouts and subnet allocations for new and existing facilitiesApply security best practices across systems and networks, supporting compliance, monitoring, and incident responseTroubleshoot complex issues across infrastructure, cloud platforms, networks,



and applicationsProvide guidance to IT support teams on complex software and hardware issuesContribute to IT strategy and propose improvements to performance, security, and reliabilityMaintain clear documentation of systems, configurations, and processesWhat You’ll NeedBachelor’s degree in IT, Computer Science, or equivalent practical experience5+ yearsof experience in systems and network administrationStrong hands‑on experience withMicrosoft 365administration and identity managementSolid knowledge ofAWSservices, IAM, networking, and security configurationStrongWindows Server and Active DirectoryskillsGood understanding ofZero Trustand modern cybersecurity frameworks (e.G. ISO 27001, NIS)Experience with monitoring tools such asPRTG, Solar Winds, Cloud Watch, SIEM, SOC/NOC platformsBasic to intermediateLinuxadministration skillsExposure toDev Ops practicesand CI/CD toolingExperience withvirtualization and storage technologies(VMware / Hyper‑V)Strong understanding ofOIDC, SAML 2.0, SCIM, MFA, and Saa S integrationsScripting or automation experience ( Power Shell, Python, Bash )Solid networking fundamentals ( TCP/IP, VLANs, routing, firewalls, VPNs )Ability to translate technical challenges into clear solutions for non-technical stakeholdersDesirable CertificationsMicrosoft 365 AdministratorAWS Associate or ProfessionalNetwork+ or CCNASecurity-focused certifications (e.G. Security+)

📌 Network System Specialist (Madrid)
🏢 Strativ Group
📍 Madrid