10/26/2026 updated
verified
Premium member
100 % availableSenior System Engineer | Contractor | Freelancer
Zürich, Switzerland
Worldwide
About me
Senior System Engineer and 12x Microsoft MVP with over 25 years of enterprise IT experience across Switzerland's leading financial, telecommunications, and healthcare sectors. Recognized authority in Microsoft Exchange, M365, Azure, Entra ID (Azure AD), Active Directory, and PowerShell automation.
Active DirectoryDomainkeys Identified MailDomain-Based Message Authentication Reporting and Conformance (DMARC)VMware ESX ServersMicrosoft Exchange ServerHyper-VIdentity ManagementSystem Center Operations ManagementMicrosoft Operating SystemsWindows ServersWindows PowerShellAzure Active DirectoryVMware VSphereBackup and RestoreSSL Certificate Management
Microsoft 365 / Office 365
- Exchange on-premise to Exchange Online migrations
- Management and support of Exchange Hybrid organizations
- Entra ID, ADFS
Exchange/Outlook messaging and collaboration systems
- Design, installation, maintenance and troubleshooting on 9 generations of Microsoft Exchange (Exchange SE, 2019, 2016, 2013, 2010, 2007, 2003, 2000, 5.5)
- Exchange PowerShell
- Complex & large-scale migrations:
- Exchange to Exchange
- Exchange on-premise to Exchange online (Microsoft 365)
- All Outlook client generations 2024/2021/2019/2016/2013/2010/2007/2003/XP/2000/98/97
Security / deliverability technologies and mechanisms
- SPF, DKIM, DMARC, ARC, BIMI, MTA-STS, TLS-RPT, DNSSEC, DANE, CAC
Active Directory / Windows Servers
- Hands-on experience with all Windows server generations: Windows Server 2022/2019/2016/2012 R2/2008 R2 /2008/2003/2000/NT4.0
- Complex Active Directory migrations, multiple domains, multiple AD forests, large international projects
- Experience in using both Microsoft and non-Microsoft migration tools (ADMT, Quest Migrator, etc.)
- AD, DNS, WINS, DHCP, RRAS, VPN, Group Policy…
PowerShell
- Knowledge of advanced editors and tools like Visual Studio Code, Sapien PowerShell Studio, Sapien CIM Explorer
- Management of PowerShell scripts with source controls systems like GitLab (including CI/CD) and GitHub.
PKI / digital certificates
- Digital certificate solutions (Digicert Partner)
Automated solutions for generating IT documentation:
- Centrel Solutions – XIA Configuration
Security gateways
- Clearswift Secure E-mail Gateway (SEG)
Encryption gateways
- Totemo,
- HIN – Health Information Network
Archiving
- Enterprise Vault
Virtualization
- VMware Workstation 25H2,10,9,8,7,6,5,4,3
- VMware vSphere / ESX 6.0, 5.5, 5.1, 5.0, 4.0, 3.5
- Microsoft Hyper-V
Corporate antiviral protection solutions
- Microsoft Defender
- Symantec,
- Trend Micro
- McAfee
Backup/Disaster recovery
- Backup Exec 7.x, 8.x and 9, 2012
- Disaster recovery of Exchange and Active Directory
Other skills and applications
- Microsoft Project (project management) ,
- Microsoft Visio (technical documentation)
Experience
Professional experience10+ years
Freelancer since2013
Languages
DeutschFluentEnglischFluentKroatischNative speaker