**Description:** ---------------- At **Grupo NS**, we are looking to hire a **Systems and Networks Administrator** with solid experience in **UNIX and Windows** environments, initially working on-site in **Linares**, and transitioning after an adaptation period (approximately 6 months) to a **hybrid model**. You will join a technical team specialized in managing, administering, and supporting critical infrastructures, ensuring system availability, security, and performance. ***Responsibilities:*** * Administration and maintenance of UNIX and Windows operating systems. * Configuration and management of switches, firewalls, VPNs, and Active Directory. * Monitoring network and server performance. * Diagnosing and resolving technical incidents. * Implementing security policies and backup procedures. * Collaborating with other technical teams to improve infrastructure. ***Conditions:*** * Work mode: On-site (Linares) \- Hybrid after 6 months * Schedule: Full-time * Stable project with a technology sector client Do you have experience managing mixed environments and are passionate about **IT infrastructure and security**? Join **Grupo NS** and grow with us in a cutting-edge technological environment! **Requirements:** --------------- **Requirements:** * Minimum **5 years** of experience in systems and network administration. * Solid knowledge in: * Operating systems: UNIX / Windows * Networking: switches, firewalls, VPN * Services: Active Directory, DNS, DHCP * Analytical skills and problem-solving orientation. * Availability to work on-site in Linares initially.