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, adecuado 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+)

#J-18808-Ljbffr

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