System and Network Admin

Aerospace & Defense | Advanced UAV Technologies | Systems & Network Administrator | Hybrid - MadridAbout the RoleImagine stepping into an environment where every system you manage supports teams pushing the boundaries of aerospace and defense technology. This is an opportunity to join a fast-growing, innovation-driven organization working at the forefront of unmanned aerial systems for mission-critical applications.As aSystems & Networks Administrator , you'll play a pivotal role in managing, securing, and optimizing a diverse IT landscape. Acting as a true "jack of all trades," you'll work across cloud, network, and enterprise platforms, with a strong emphasis on reliability, scalability, and security. This role suits someone who thrives in complex environments, enjoys ownership, and takes a proactive, security-first approach to infrastructure.What You'll DoAdministor, 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 environments, SAML integrations, and Route53.Support Windows Server environments (Active Directory, file services, patching, backups).Administer and customize Jira and Confluence to support engineering and business workflows.Support network infrastructure operations including switches, routers, firewalls, VPNs, site connectivity, and basic SD-WAN.Design and maintain network architectures and subnet allocations for new and existing facilities.Apply security best practices across systems and networks, including monitoring, compliance, and incident readiness.Troubleshoot complex issues spanning systems, networks, cloud platforms, and SaaS applications.Act as a senior escalation point for IT support specialists.Contribute to IT strategy, continuous improvement initiatives, and technical roadmaps.Maintain clear documentation of systems, configurations, and processes.Essential (Mandatory)Proven knowledge ofZero Trust principlesand modern cybersecurity frameworks (e.g.ISO 27001, NIS, ABDO ).Strong understanding of network fundamentals , including TCP/IP, VLANs, routing, firewalls, and VPNs.Hands-on experience as aMicrosoft 365 Administrator , covering identity, access control, device management, monitoring, and incident response.Experience withautomation and scriptingusing tools such asPowerShell, Python, or Bash .DesirableBachelor's degree in Information Technology, Computer Science, or equivalent professional experience.5+ years' experience in systems and network administration across mixed environments.Experience managingAWS infrastructure , including IAM, security groups, networking, and service configuration.StrongWindows Server and Active Directoryexpertise.Familiarity withOIDC, SAML 2.0, SCIM, and MFAflows and integrating SaaS platforms with Entra ID.Experience administeringJira and Confluence .Exposure toLinux administration(basic to intermediate).Knowledge ofvirtualization technologies(VMware/Hyper-V) and storage solutions.Experience withmonitoring platforms(PRTG, SolarWinds, CloudWatch, SIEM/SOC tools).Exposure toDevOps practicesand CI/CD tooling.Relevant certifications such asAWS Associate/Professional, Network+, CCNA, or Security+ .Ability to communicate technical concepts clearly to non-technical stakeholders.Certifications such as Microsoft 365, AWS, Network+, CCNA, or Security+ are advantageous but not essential.Who You AreYou're calm under pressure, curious by nature, and comfortable operating across multiple technologies without being siloed. You take ownership, value collaboration, and naturally think about security in everything you do. You communicate clearly with both technical and non-technical stakeholders and enjoy making tangible impact in a high-innovation environment.Why Join?Cutting-Edge Technology– Work on advanced aerospace and defense systems with real-world impact.International Collaboration– Partner with highly skilled teams across multiple countries.High-Growth Environment– Be part of a rapidly scaling organization where your voice matters.Meaningful Impact– Your work directly supports next-generation flight and defense capabilities.This organization is an equal-opportunity employer and values diversity across all teams.