Bridging on-premise infrastructure and cloud security.
Working across Piraeus Bank & Uni Systems,
with a focus on Azure, IAM, and cybersecurity.
Administration and support of VMware vSphere/ESXi environments (VM creation, snapshots, cloning, monitoring). Management of Citrix infrastructure for ~3,500 users (provisioning, troubleshooting, performance optimization). Active Directory user provisioning/de-provisioning and Group Policy management. Windows Server and Linux system administration (installation, patching, updates, troubleshooting). Operational support for storage and system availability within established enterprise procedures. Collaboration with infrastructure, networking, and security teams to maintain enterprise operations.
Managed user access rights across IT systems (Active Directory) to ensure security, compliance, and efficient operations. Administered IAM processes including user provisioning, deprovisioning, and role-based access control (RBAC). Supported MFA enrollment and troubleshooting, contributing to account security and user authentication workflows. Collaborated with IT and cybersecurity teams on access-related security issues, supporting investigations and remediation. Delivered technical support and training to end users, ensuring smooth operation of banking systems.
Performed daily updates, patching, and backup operations across enterprise systems. Provided technical and infrastructure support, troubleshooting hardware, software, and network issues. Maintained up-to-date documentation of system configurations and processes. Collaborated with cross-functional teams on project planning to ensure timely task completion.
Building a cloud-native Security Operations Center environment using Microsoft Sentinel. Includes custom KQL threat detection rules, log analytics workspaces, automated incident response playbooks (SOAR), and integration with Microsoft Defender for Endpoint. Fully documented on GitHub with setup guides and detection rule explanations.
Hands-on environment covering Entra Connect, hybrid AD/Azure setups, DNS, DHCP, Storage Replica, DFS, and Azure File Sync. Built to prepare for AZ-800/AZ-104 and document real-world hybrid scenarios.
Setting up a vulnerability scanning environment using Nessus Essentials and OpenVAS. Covers asset discovery, scan configuration, risk prioritization, and remediation reporting — simulating a real enterprise vulnerability management workflow.
Deploying Splunk Free to ingest logs from multiple sources (Windows Event Logs, Syslog, network devices). Building custom dashboards, correlation searches, and alerts to detect suspicious activity — complementing the Azure Sentinel lab.
Open to conversations about cloud security, sysadmin roles, and cybersecurity opportunities. Let's connect.
[email protected]