**Description:** ---------------- At **Grupo NS**, we are looking for a **Senior Administrator** with **solid technical knowledge** and extensive **experience in Linux and middleware environments**, to join our team and participate in a stable project within the **Insurance sector.** Work modality: **Hybrid format (**2 days onsite at the office, location **Madrid)** **Functions and responsibilities** * **Administration and maintenance of Linux systems in production environments.** * **Management and supervision of middleware servers (Apache, JBoss and Tomcat).** * **Monitoring and management of operating system processes.** * **Incident resolution (INC) using system tools:** * + Process query and management. + Network traffic analysis. + Resource consumption monitoring (CPU, memory, disk). * **Support** for client\-server applications based on **middleware.** * **Automation** of tasks through **scripting.** If you meet the requirements and wish to join a rapidly expanding company, send us your CV and become part of a team where talent and experience make the difference. We look forward to welcoming you at **Grupo NS**! **Requirements:** --------------- **Technical requirements** * Advanced experience in **Linux systems.** * **Solid knowledge and demonstrable experience** in: * + Apache + JBoss + Tomcat * **Proficiency with system tools** for diagnosis and **incident resolution.** * **Scripting: Shell script (bash, ksh).** * **Experience in client\-server application environments** using **middleware.**