Sebastian B.
Managing Director
Experience
BITMARCK Technik GmbH
- Manage the DSM infrastructure with 18 clients and about 10,000 servers in a multi-domain environment
- Develop PowerShell scripts for managing and configuring various applications
- Perform DSM release updates
- Migrate DSM servers from 2016 to 2022
- Troubleshoot and fix DSM issues
- Switch DSM communication to SSL for all management points and database access
Polizei Hessen
- Build a Windows-based forensics cloud
- Develop PowerShell scripts to manage and configure Active Directory and infrastructure servers
- Harden Windows servers based on BSI basic protection
- Create GPOs
- Set up DNS, DHCP, and CA
Technische Hochschule Aschaffenburg
- Set up Active Directory delegation
- Create GPOs
- MSI packaging with Orca
- Set up a test Active Directory
- Set up AD password sync with the Pwned database
- Set up YubiKey
- Configure Zabbix monitoring
- System administration of Windows servers
- CA/PKI
- IIS
- SQL
- Exchange including CU updates
EDEKA Rechenzentrum Süd Betriebs GmbH
- Active Directory PowerShell scripting
Audi AG
- Driver packaging
- PowerShell scripting
Ergo Group AG
- Active Directory Administration
- Process automation via PowerShell scripting
- Exchange contact and mailbox migration via PowerShell scripting
BestStrom24
- Office 365 setup
- Mailbox migration to Office 365
HessenForst
- Management and redesign of patch management
- Coordination with specialist departments
- Software packaging with DSM for a Windows 10 and Server 2016 rollout
- Scripting with PowerShell
- GPO adjustments for Windows 10
- DSM migration from Server 2008 to Server 2016
HAWE Hydraulik SE and HAWE Holding
Creating concepts and presentations for the board and department heads
Coordinating and delegating tasks with specialist departments and international subsidiaries
Project leadership of the restructuring of a role-based Active Directory and Azure permissions management (international roll-out)
Developing a naming convention
Creating Group Policy Objects (GPOs)
Scheduling and distributing tasks
Training staff
Implementing, planning, and leading patch management
PowerShell development and process automation
PowerShell interface development between Microsoft Navision, Active Directory, and SQL servers
Data synchronization with PowerShell between SAP HCM and Active Directory
Designing, implementing, and automating Active Directory permission management
Redesigning data storage in the file system
File server migration
Automating NTFS file system permissions
Designing and implementing DFS-N and DFS-R
Developing a user self-service to delegate permission assignments to departments
PowerShell scripts to automate processes in Microsoft Exchange
Domain integration of several international subsidiaries
Software packaging with DSM
Windows 10 rollout with DSM
2nd-level support for clients and servers
HAWE Hydraulik SE
- Software packaging with ENTEO 6.1 and DSM 7
- Upgrade and infrastructure change from Enteo 6.1 to DSM 7 (11 sites, 12 servers)
- Creating PowerShell scripts for Active Directory queries and modifications, as well as for SQL queries and modifications
- Custom interface between Discovery, DSM, and Active Directory
- Remote management of BIOS settings for Lenovo computers
- General scripts for automation
- Setting up Windows 2008 R2 servers
- Implementing BitLocker to Go with PKI
- Optimizing GPOs
- 2nd-level support
- Problem Management
HAWE Hydraulik SE
- Software packaging with ENTEO 6.1
- Software compatibility testing for Windows 7
- Customizing Windows 7 and Office 2010
- Creating GPOs for Windows 7
- 2nd-level support
IT Consulting Info AG
- Creating GPOs for Windows Server 2008 R2 and Windows 7
- Customizing Windows 7 and Windows Server 2008
- Performance optimization of Windows 7
- Configuring Wyse thin clients
- User migration in Active Directory
- Bug fixing during pilot phase
- Creating firewall rules in Windows 7
MR Systeme GmbH
- Installing and maintaining Windows Servers 2003 and 2008 as well as Exchange 2003 and 2007 for up to 180 users
- Supporting end users on client PCs running Windows 2000 through Windows 7
- Troubleshooting issues with servers, PCs, printers, and software
- Installing and maintaining WatchGuard firewalls
- Installing and maintaining WatchGuard VPN clients and site-to-site connections
Managing Director
L&S Electronic Solutions LTD & Co KG
- 1st- and 2nd-level support for Windows systems (including remote support and server administration at 2nd level) for German- and English-speaking customers
- Installing and maintaining Windows servers including 1st and 2nd-level support
- Using and administering the ERP system (creating users, setting up user groups, assigning permissions, etc.)
- Repairing PC hardware and small server systems
- Customer consulting and sales
Languages
Education
Media Markt
Retail salesperson · Retail · Osnabrück, Germany
BBS am Pottgraben
State-certified business assistant in computer science, advanced secondary school certificate I · Computer science · Osnabrück, Germany
Wittekind Realschule
Secondary school certificate I · Osnabrück, Germany
Certifications & licenses
AZ-104 Microsoft Azure Administrator
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