Freelancer profile translated to English.
Back to original languageAbout Andreas
My career in the IT industry began many years ago, and I always strive to work on complex topics, as I enjoy taking on challenging and difficult tasks and growing from them.
There are many ways to learn – and I pursue several – both professionally and privately. When you approach me, you can be sure that I will not complete my tasks as quickly as possible, but rather carefully, thoroughly, securely, and above all with the desired quality, yet still efficiently.
Knowledge gaps will be communicated transparently, as will alternative options that lead to the goal and guarantee the completion of your work. Individual scenarios can be developed and discussed in a short time. You can also find the option for a free consultation for your project on my website.
German
Native or bilingual
English
Fluent
Can work on-site
Bensheim (up to 50km), Frankfurt am Main (up to 10km), Heidelberg (up to 10km), Darmstadt (up to 30km)
Experience
- Behörde im KRITIS-BereichIT System AdministratorPUBLIC SECTORDecember 2024 - Today (1 year and 6 months)Frankfurt, Germany
- Design PowerShell scripts for automation of AD integration, mass queries of server information and storage in CSV files, as well as silent WMI installations and uninstalls
- Set up OpenFT connections for encrypted payment transactions at the file level and check existing systems for security vulnerabilities (based on Linux)
- Administration of a project for the implementation of an on-premise AI for the service desk and its maintenance
- Setup of Pleasant Password Server in conjunction with a Microsoft SQL Server, AD integration, certificate integration, as well as setup and testing of the individual KeePass client
- Administration and setup of business printers in a fleet with authentication via RFID tag and AD integration
- Support of the time tracking tool Primion "Prime" and involvement in the restructuring of the GUI and the authorization scheme
- Acquired basic project management skills related to IT security in meetings
- CxIT GmbH,IT System AdministratorDIGITAL AND ITNovember 2021 - November 2024 (3 years and 1 month)Bensheim, HE, Germany
- Network administration and maintenance; server installation and configuration (Windows, Linux)
- User management including permission assignment and development of permission systems in AD
- Creation and management of Group Policy Objects for sharing, restriction, or allocation (including WMI filtering)
- Troubleshooting and problem resolution under Windows, Linux, and partially MAC
- Implementation of backup and recovery solutions via VeeamB+R (setting up protection groups, GFS backup, SMTP notifications, license management, modern authentication, and more)
- Performing software and hardware upgrades
- System monitoring and optimization via Paessler PRTG including troubleshooting
- Virtualization environments via Hyper-V and VMware
- Creation and maintenance of documentation, network plans, etc.
- Independent planning and execution of IT projects;
- License management e.g., M365, Odette, etc.
- Planning and scaling IT infrastructure (procurement of new physical servers)
- Configuration of network protocols and services as well as maintenance of services via self-written PowerShell scripts and PDQ as the execution element
- Script creation (PowerShell, Batch) and automation of tasks also with the help of PDQ Deploy & Inventory
- Patch management and software distribution or software packaging via PDQ Deploy & Inventory
- Support of email and communication systems, management of access rights and user accounts
- Support of remote access solutions and VPN via Sophos, OpenVPN, Lancom
- Configuration of Sophos Firewalls (e.g., XGS) including setup of VPN access, routes, port forwarding, web content filtering, etc.
- Documentation of backup structures and network topologies including retention policies via Visio
- Management and troubleshooting of storage solutions
- Support in complying with IT policies and standards (BSI target state)
- Fully independent working style as well as daily planning and time management
- ThoFe24 GmbH,Commercial Clerk & IT System Administrator 60/40RETAIL (LARGE RETAILERS)August 2014 - September 2019 (5 years and 1 month)68642 Bürstadt, GermanyDuring my employment, my focus was on the commercial side. This included supporting existing customers, assisting with new customer acquisition, and developing and implementing strategies in the B2B sector. I organized and led internal meetings, planned projects, and took on tasks in purchasing and sales. Additionally, I was responsible for maintaining the company's online shop and actively participated in marketing – from creating social media presences and advertising campaigns to designing flyers and product images. In parallel, I took on tasks in IT system administration. This included the administration of Windows servers under Hyper-V, the setup and maintenance of the network, VPN access, and Sophos firewall, as well as the implementation of a VoIP telephone system. I also performed regular system updates, handled user management, and was involved in error analysis and troubleshooting.
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Education
- IT SYSTEM ADMINISTRATORIAL & CxIT GmbH2023Nachdem ich zuvor mehrere Jahre in der IT gearbeitet hatte, habe ich 2021 eine Umschulung zum Fachinformatiker für Systemintegration begonnen und 2023 erfolgreich abgeschlossen. Zuvor war ich in der Anwendungsentwicklung und als IT-Systemkaufmann unterwegs und konnte bereits etliche Erfahrungen sammeln. Während der Umschulung nahm ich an einem 12 monatigen Zusatzkurs für Kaufmännische Kompetenzen teil und arbeitete bereits auf Teilzeitbasis bei der CxIT GmbH, bei der ich auch nach der Umschulung in Vollzeit überging und bis November 2024 dort weiteres Wissen aneignen konnte.