DGFreelancer profile translated to English.
Back to original languageAbout Dimitrij
Senior IT System Administrator | Focus: Hybrid Infrastructure & Security
I support companies in the administration, stabilization, and security of complex IT landscapes. My focus is on the seamless integration of on-premise systems (Windows Server, VMware) with modern cloud solutions (Azure, M365).
Your Added Value:
Technical Expertise: Profound know-how in Windows Server 2012–2022, Exchange, Intune, and network security (Sophos Firewalls, VPN).
Process Security: Proven experience in operating critical infrastructures (healthcare) and proficient in automation using PowerShell.
Communication: As an experienced IT trainer, I guarantee not only technical solutions but also clean documentation and clear communication with all stakeholders.
German
Native or bilingual
Russian
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Mednation AGSenior IT System AdministratorJune 2022 - Today (4 years)Mönchengladbach, GermanyAdministration of the IT infrastructure: Support for virtual server environments (VMware vSphere), Windows Server 2012/2016, and backup management with Veeam. User & Access Management: Management of Active Directory, Exchange, GPO, Citrix sessions, and file server structures. Network & Security: Configuration of Sophos Firewall, VPN management, and automation through PowerShell scripting. Application Support: Administration of clinical information systems (KIS, CGM, Polypoint) and user support via ticket system.
- Katholische Jugendagentur KölnPart-time as IT Trainer & Job CoachOctober 2023 - Today (2 years and 8 months)IT Qualification: Conducting training for refugees and young adults (MS Office, Hardware Basics, 10-finger typing system) and promoting digital literacy for everyday life. Application Management: Targeted preparation for the job market through optimization of documents, interview training, and advice on IT apprenticeships. Documentation and technical customization of Stepnova according to user needs, as well as support with official applications.
- Krankenhauszweckverband e.VIT System AdministratorNovember 2021 - May 2022 (6 months)Server & Virtualization: Administration of Windows Server 2012/2016 (including WSUS) and resource management of virtual machines in vCenter and Citrix Cloud.
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Education
- IT System KaufmannDeutsche Telekom AG2016IT-Systemkaufmann
- nullTH-Köln2013