DESCRIPTION We are looking for a candidate with solid experience in computer security and system administration to join a large-scale corporate environment (over 42,000 users). The ideal candidate must meet the following requirements: * ******At least 5 years of experience** in IT environments, preferably within large organizations. * Advanced experience with **Windows Desktop and Server** systems, with a deep understanding of operating system functionality to support **early detection of cybersecurity threats**. * Knowledge of **security patch management** and system updates. * Knowledge of **Linux system administration** at the command level, including services and basic maintenance tasks. * Experience with **Microsoft Azure**, both in incident management and proposing security improvements. * Solid knowledge of **network and firewall management**, with specific experience in **Palo Alto Networks**. * Experience managing **VPN environments** and secure remote access solutions. * Experience with **EDR (Endpoint Detection and Response)** tools for monitoring and containing threats on endpoints. * Knowledge of **SIEM** solutions (such as Microsoft Sentinel or others), including event correlation and security alert analysis. * Ability to manage **security incidents**, propose improvements, and work proactively with other technical teams. REQUIREMENTS * Experience in **Microsoft 365 / Office 365** environments, especially in configuring and managing **Exchange Online** and email security policies. * Knowledge and experience in **device management using Microsoft Intune**. * Recommended certifications: **SC-200**, **PCNSE**, or others related to cybersecurity or system administration. * **Intermediate to advanced level of English**, particularly for understanding technical documentation and working with international tools.