Gheorghe Cosmin Calin

T-Systems Iberia · Reus, Spain · International team — Deutsche Telekom Technik (via T-Systems)

• Operate the international SysOps team for Deutsche Telekom Technik through T-Systems — Tier-2 incident handling across the Linux + Windows estate.
• Deploy new application versions on Tomcat, WebLogic, Apache and IIS — both manually and orchestrated with Ansible playbooks.
• Administer Oracle, MySQL, PostgreSQL, MongoDB and Microsoft SQL Server — user management, permissions, scheduled backups, scripted maintenance.
• Install and update server software, configurations and access policies across the managed fleet.
• Standardize and improve internal documentation so colleagues (and the next on-call) can resolve issues without context-switching to a specialist.
• Write internal automation in Bash and JavaScript that removes manual toil from recurring tasks.

Reserva de la Tierra · Reus, Spain

• IT service management — ticket triage, user support, vendor coordination, and SLA tracking for a wine and spirits company.
• Administered the Microsoft 365 suite end-to-end (Azure AD, Exchange Online, SharePoint, OneDrive, Teams) with a focus on collaboration and secure data handling.
• Maintained Windows Server environments and the services that ran on them — Active Directory, file services, Dynamics NAV ERP.
• Operated Ubiquiti UniFi and Fortinet FortiGate network gear — segmentation, VLANs, firewall rules, VPN access.

Institut Baix Camp · Reus, Spain

Two-year higher technical qualification in front-end and back-end web development — HTML, CSS, JavaScript, server-side scripting, databases, design patterns, and deployment.

Institut Baix Camp · Reus, Spain

Two-year higher technical qualification in network and systems administration — Linux, Windows Server, networking, virtualization, scripting, security fundamentals.