Network System Specialist
hace 5 días
Madrid
Systems & Networks Administrator Location: Flexible / On-site / Hybrid Employment Type: Full-time About the Role 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, ideal 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 Do • Administer, 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 Route53, • Support Windows Server environments, including Active Directory, file services, patching, and backups, • Administer and customize Atlassian Jira and Confluence, aligning tools with team workflows and integrations, • Support network infrastructure including switches, routers, firewalls, VPNs, site connectivity, and basic SD-WAN, • Design and maintain network layouts and subnet allocations for new and existing facilities, • Apply security best practices across systems and networks, supporting compliance, monitoring, and incident response, • Troubleshoot complex issues across infrastructure, cloud platforms, networks, and applications, • Provide guidance to IT support teams on complex software and hardware issues, • Contribute to IT strategy and propose improvements to performance, security, and reliability, • Maintain clear documentation of systems, configurations, and processes What You’ll Need • Bachelor’s degree in IT, Computer Science, or equivalent practical experience, • 5+ years of experience in systems and network administration, • Strong hands-on experience with Microsoft 365 administration and identity management, • Solid knowledge of AWS services, IAM, networking, and security configuration, • Strong Windows Server and Active Directory skills, • Good 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 platforms, • Basic to intermediate Linux administration skills, • Exposure to DevOps practices and CI/CD tooling, • Experience with virtualization and storage technologies (VMware / Hyper-V), • Strong understanding of OIDC, SAML 2.0, SCIM, MFA, and SaaS integrations, • Scripting 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 stakeholders Desirable Certifications • Microsoft 365 Administrator, • AWS Associate or Professional, • Network+ or CCNA, • Security-focused certifications (e.g. Security+)