Imagine stepping into a role where every system you manage directly supports teams working on mission-critical, high-impact technology. As a Systems & 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 optimize Microsoft 365 services (Exchange Online, SharePoint, Teams, Defender, Entra ID, Intune)Manage and maintain AWS cloud infrastructure, including identity sources, networking, security controls, HPC, SAML, and Route53Support Windows Server environments, including Active Directory, file services, patching, and backupsAdminister and customize Atlassian Jira and Confluence, aligning tools with team workflows and integrationsSupport network infrastructure including switches, 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+ years of experience in systems and network administrationStrong hands‑on experience with Microsoft 365 administration and identity managementSolid knowledge of AWS services, IAM, networking, and security configurationStrong Windows Server and Active Directory skillsGood understanding of Zero Trust and modern cybersecurity frameworks (e.g. ISO 27001, NIS)Experience with monitoring tools such as PRTG, SolarWinds, CloudWatch, SIEM, SOC/NOC platformsBasic to intermediate Linux administration skillsExposure to DevOps practices and CI/CD toolingExperience with virtualization and storage technologies (VMware / Hyper‑V)Strong understanding of OIDC, SAML 2.0, SCIM, MFA, and SaaS integrationsScripting or automation experience (PowerShell, 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+)
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📌 Network System Specialist (Madrid)
🏢 Strativ Group
📍 Madrid