Markus Halbedel-Senior IT Infrastructure, Cloud & Security Consultant
Check rate
Experience
Senior M365 Consultant
BITMARCK GmbH
Creation of concepts for M365 implementation, especially Tenants, EntraID, EntraConnect and ExchangeOnline, taking BAS standards into account (mandatory baseline security requirements) in the project "Concept M365" with the aim of transferring the concepts to the M365 environments of Bitmarck and then handing them over to the customer.
- Creation of a current-state analysis of the existing M365 environments as well as the on-premises environments and the BAS standards.
- Creation of concepts for the topics Tenants, EntraID, EntraConnect and ExchangeOnline taking the BAS standards into account
- Design and implementation of an automated solution for creating standardized M365 tenants based on Microsoft M365 DSC (Desired State Configuration)
- Transfer of the concepts into the M365 environments
- Creation of detailed technical documentation
Senior Cloud & Security Consultant
Dachser SE
Evaluation and implementation of cloud solutions based on Microsoft Azure.
- Evaluation and implementation of cloud security solutions in the area of identity.
- Zero Trust architecture with Conditional Access, MFA, Identity Protection
- Privileged Identity Management (PIM) and role-based access concept (RBAC)
- Evaluation and implementation of on-premises security solutions in the area of Microsoft Active Directory (identity).
- AD tiering model according to Microsoft best practices including Kerberos hardening
- PAW concept (Privileged Access Workstations)
- Active Directory security analysis Methods, tools and technologies: Microso
Senior Messaging Consultant
Landesbank Hessen-Thüringen Girozentrale (HELABA)
Support in implementing and adapting configuration changes in the local Exchange infrastructure (on- premises mail servers) as well as in the hybrid environment.
- Planning and execution of pilot and large-scale mailbox migrations to Exchange Online.
- Technical support for the migration of user mailboxes, room and equipment mailboxes, and public folders.
- Support for the project manager in technical discussions and decision-making processes.
Exchange Architect
T-Systems Multimedia Solutions GmbH
- Concept for introducing enhanced email security by marking externally received emails
- Concept for access to Exchange resources for users, administrators and applications via a standardized Microsoft Graph API
- Analysis and evaluation of the existing Exchange antivirus / antispam solution
- Planning, concept and company-wide rollout of new Exchange features, such as dynamic distribution groups
- Methods, tools and technologies: Microsoft Active Directory, Microsoft Azure Active Directory, Microsoft 365, Microsoft Exchange Online, Exchange 2019, PowerShell, Microsoft Graph, email security
- Environment: International hybrid Exchange infrastructure with approx. 165,000 mailboxes (15,000 on-premises / 150,000 online)
Senior Consultant
Balluff GmbH
- Analysis and concept for migrating on-premises email systems to a private cloud and to Microsoft 365 (Exchange Online)
- Replacement of the existing on-premises SMTP gateway with a cloud solution
- Migration of the existing email archiving system to a cloud solution
- Planning, concept and company-wide rollout of new email features, such as signature software
- Methods, tools and technologies: Microsoft Active Directory, Microsoft Azure Active Directory, Microsoft 365, Exchange Online, Exchange 2016, PowerShell, email security, Defender for Office
- Environment: International hybrid Exchange infrastructure with approx. 3,000 mailboxes
Senior Consultant
Simon Hegele GmbH
- Planning and pilot rollout of a mail migration from Exchange 2016 to Exchange Online / M365
- Planning and implementation of security and compliance settings in M365
- Active Directory 2016 consolidation, Azure Active Directory management
- Methods, tools and technologies: Microsoft Active Directory, Microsoft Azure Active Directory, MS Office 365, Exchange Online, AAD Connect, PowerShell scripts, M365 Information Protection, Data Loss Prevention, Conditional Access, MFA, Compliance
- Environment: International IT environment with around 3,000 users
Cloud Consultant
Rathgeber GmbH & Co. KG
- Planning and setup of a hybrid Active Directory for MS Intune
- Planning and setup of an MDM environment based on Microsoft Azure Intune (Microsoft Endpoint Manager)
- Intune Configuration Profiles, Conditional Access, and Multifactor Authentication
- Intune Autopilot and Modern App Management through Intune
- Windows Virtual Desktop integration for business access
- Methods, tools and technologies: Microsoft Endpoint Manager (Intune), Microsoft Windows Virtual Desktop, MS Office 365, Exchange Online, Azure AD Connect, MS Azure (PaaS, IaaS, Azure Active Directory), PowerShell scripts
- Environment: International IT environment with around 300 users
Senior Consultant
Dachser SE
- Planning and pilot rollout of a mail migration from Lotus Notes to Exchange Online / M365
- Planning and pilot rollout of a Microsoft Teams rollout / Microsoft 365
- Planning and implementation of security and compliance settings in M365
- Active Directory 2016, Azure Active Directory management, identity management: role concepts
- Methods, tools and technologies: Microsoft Active Directory, Microsoft Azure Active Directory, MS Office 365, Exchange Online, AAD Connect, ADFS, PowerShell scripts, M365 Information Protection, Data Loss Prevention, Conditional Access, MFA, Compliance
- Environment: International IT environment with around 30,000 users
Senior Cloud Consultant / Architect
Hoval AG
- Support with the Exchange Online transformation
- Design and management of Advanced Threat Protection (ATP) and SPAM management with SPF, DKIM, DMARC
- Email compliance implementation with Exchange Online
- Planning the migration from Microsoft Exchange to Exchange Online
- Configuration and migration of email-dependent services for Exchange Online
- Methods, tools and technologies: MS Office 365, Exchange Online, Azure AD Connect, Microsoft Azure Active Directory, PowerShell scripts
- Environment: International IT environment with around 2,000 users
Senior Consultant / Architect
Uni Mozarteum Salzburg
- Analysis of the existing IT infrastructure
- Concept for transforming the existing Micro Focus environment into a Microsoft world
- Planning the migration from Micro Focus eDirectory to Microsoft Active Directory & Azure AD
- Planning the migration from Micro Focus Groupwise to Exchange / Exchange Online
- Introduction of O365 and Azure including Azure services
- Planning of an MDM environment based on Microsoft Azure Intune
- Methods, tools and technologies: MS Office 365, Exchange Online, Azure AD Connect, Microsoft Azure Intune, MS Azure (PaaS, IaaS, Azure Active Directory), migration tools for Micro Focus Groupwise, PowerShell scripts
- Environment: IT environment with around 3,000 users
Senior Consultant
Siteco Beleuchtungstechnik GmbH
- Support with the carve-out from the Osram parent company into an independent IT infrastructure
- Concept and prototyping for an Office 365 tenant-to-tenant migration
- Planning and setup of a new internal PKI infrastructure
- Planning and setup of an MDM environment based on Microsoft Azure Intune
- Setup of an Exchange hybrid environment
- Setup of a patch management solution based on WSUS and SCCM
- Windows Virtual Desktop integration for Business Access
- Methods, tools and technologies: Microsoft Windows Virtual Desktop, Exchange 2016, MS Office 365, Exchange Online, Azure AD Connect, Microsoft Azure Intune, MS Azure (PaaS, IaaS, Azure Active Directory), PowerShell scripts
- Environment: International IT environment with approx. 2,000 users
Senior Consultant
MediaMarktSaturn
- Analysis of the existing IT infrastructure for planning an international carve-out
- Planning and high-level concept for a future Active Directory infrastructure
- Planning and high-level concept for a migration strategy for the carve-out
- Methods, tools and technologies: Agile project management, Microsoft Active Directory, Exchange 2016, MS Office 365, Exchange Online, AAD Connect, Azure AD, ADFS, Quest Migration Manager, various internal applications
- Environment: International IT infrastructure with approx. 60,000 users/clients, 5,000 servers, 1,200 applications, 1,200 locations
Senior Consultant
First Attribute AG
- Office 365 (Exchange Online) concepts and migrations
- Exchange 2016 concepts and migrations
- Active Directory, Azure AD identity management
- Methods, tools and technologies: Microsoft Exchange 2010–2016, MS Office 365, Exchange Online, AAD Connect, ADFS, PowerShell scripts
- Environment: Various international SMEs and enterprises
Exchange 2016 Architect
Bilfinger Global IT GmbH
- Office 365 (Exchange Online) concepts and migrations
- Exchange 2016 concepts and migrations
- Automation with Desired State Configuration (DSC)
- Active Directory, ADFS & AAD Connect
- Methods, tools and technologies: Microsoft Exchange 2010–2016, MS Office 365, Exchange Online, AAD Connect/DirSync, ADFS, PowerShell scripts, Desired State Configuration
- Environment: Resource forest with 60 account forests, 55,000 mailboxes
Senior Consultant
Microsoft Schweiz GmbH
- Office 365 (Exchange Online) concepts and migrations
- ADFS & AAD Connect
- Microsoft cloud computing with Azure
- Exchange concepts and migrations
- Active Directory
- Methods, tools and technologies: Microsoft Exchange 2010–2016, MS Office 365, Exchange Online, AAD Connect/DirSync, AD FS, Azure (PaaS, IaaS, Azure Active Directory), PowerShell scripts
Senior System Engineer / Consultant
Baggenstos AG
- Office 365 (Exchange Online) concepts and migrations
- ADFS & DirSync
- Microsoft Cloud Computing with Azure
- Exchange 2016 TAP program, Exchange 2013 concepts and migrations
- Active Directory & system management
- Setup, configuration, and operation of VMware infrastructures
- Setup, configuration, and operation of Hyper-V infrastructures
- Methods, tools, and technologies: Microsoft Exchange 2010–2016, Azure (PaaS, IaaS, Azure Active Directory), VMware ESXi 5.0–6.0, Hyper-V 2012 R2, PowerShell scripts
Senior Consultant / Senior Systems Engineer
Axept Webcall AG (Swisscom AG)
- GroupWise migrations to Exchange 2013 with Dell Coexistence & Migration Manager
- Inter- & intra-forest email migrations to Exchange 2013
- Connection of subsystems to Exchange 2013 (TMG, Blackberry, Email Archive, Lync)
- Exchange 2013 enterprise infrastructure concepts
- Remote access solutions for Exchange 2013
- Office 365 concepts and migrations
- Swisscom Managed Communications & Collaboration
- Methods, tools, and technologies: Exchange 2010/2013, Dell Coexistence Manager for GroupWise, Dell Migrator for GroupWise, Dell Migrator for Exchange, Sophos UMT, PowerShell scripts, Excel
Infrastructure Specialist / Senior Systems Engineer
SCOR SE
- Cross-forest integration / migration of Exchange 2003/2007 environments into an Exchange 2010 organization
- Active Directory and Exchange coexistence with Quest Collaboration Manager
- Exchange administration, infrastructure concepts
- Connection of subsystems to Exchange 2010 (GOOD for Enterprise, Blackberry, Email Archive, GOOD Dynamics)
- Methods, tools, and technologies: Microsoft Exchange 2007/2010, Quest Collaboration Manager, GOOD for Enterprise, GOOD Dynamics, PowerShell scripts, Excel
Senior Consultant / Senior Systems Engineer
Axept AG
- Various email migrations to Exchange 2010
- Connection of subsystems to Exchange 2010 (TMG, Blackberry, Email Archive, Lync/OCS)
- Windows 2008 R2 concepts and installations
- Exchange 2010 enterprise infrastructure concepts
- TMG concepts and installations
- Methods, tools, and technologies: Exchange 2010, Quest Migration Manager for Exchange, Windows Server 2008/2008 R2, Microsoft TMG 2010, PowerShell scripts
VMware ESX Engineer
SCOR SE
- Setup of VMware ESX 3.x and vSphere 4.0 environments
- Configuration and operation of the VMware infrastructure
- Virtualization of server systems with VMware ESX 3.5
- Infrastructure upgrade to vSphere 4.0
- Methods, tools, and technologies: VMware ESX 3.5, vSphere 4.0, NetApp Storage, Windows Server 2003/2008, PowerShell scripts
Exchange 2007 Specialist / Engineer
SCOR Switzerland Ltd
- Cross-forest integration / migration of Exchange 2003/2007 environments into a unified Exchange organization
- Domain and Exchange migrations with Quest Migration Manager
- Exchange virtualization on VMware ESX 3.5
- NetApp storage connections to Exchange
- Exchange infrastructure concepts and designs
- Email archive migration from Zantaz Exchange Archive to Legato Email Xtender
- Methods, tools and technologies: VMware ESX 3.5, Exchange 2003/2007, NetApp storage, Zantaz & Legato email archive, PowerShell scripts
IT Infrastructure System Engineer / Consultant
Axept AG
- Various email migrations to Exchange 2007
- Exchange virtualization on VMware ESX 3.x
- NetApp storage connections to Exchange 2007
- Exchange infrastructure concepts and designs
- ISA 2006 concepts and installations
- Methods, tools and technologies: VMware ESX 3.x, Exchange 2007, NetApp storage, ISA 2006
Exchange 2007 Specialist / Consultant
Converium AG
- Migration from Lotus Domino to Exchange 2007
- Integration and operation of the Exchange 2007 environment in the existing IT landscape
- Connection of the Exchange 2007 environment to the Zantaz Exchange Archive Server
- Methods, tools and technologies: Lotus Notes Domino, Microsoft Exchange 2007, Zantaz email archive
Technical Consultant - Microsoft Exchange 2007 Migration
Munich Reinsurance
- Setup of a feature lab based on the Exchange 2007 RTM version
- Creation of a high-level concept for Exchange 2007 (feature list, migration strategies, dependencies, requirements, prerequisites)
- Creation of a detailed concept (deployment guide) with rough cost estimate
- Methods, tools and technologies: Microsoft Exchange 2003, Exchange 2007
Technical Consultant - Microsoft Vista Pre-Study
Munich Reinsurance
- Setup of a test environment to evaluate the Microsoft Vista client
- Compatibility tests for the client software in use
- Evaluation of new features and functions
- Methods, tools and technologies: Microsoft Vista
Technical Consultant / Microsoft Infrastructure
Magazinpresse Verlag GmbH
- Microsoft Windows Active Directory
- Microsoft Exchange 2003 updates and patch management
- Introduction of Microsoft SMS 2003
- Packaging of software products
- Software distribution based on RIS and SMS 2003
- Methods, tools and technologies: Active Directory 2003, Exchange 2003, Microsoft SMS 2003
IT Consultant / Focus on Exchange
INA - Schaeffler KG
- Migration of MS Exchange 5.5 sites to Exchange 2003
- Operation, monitoring, and third-level support of the global Exchange 2003 infrastructure
- Design and implementation of Exchange 2003 enhancements
- Methods, tools and technologies: Active Directory 2003, Exchange 2003
Senior System Engineer / Project Manager
Munich Reinsurance Company of Australasia
- Design and implementation of storage systems (SAN / NAS)
- Design and implementation of disaster recovery solutions incl. server virtualization
- Technical project manager for infrastructure projects and rollouts in Australia and Asia
- Implementation and operation of Windows 2000/2003, AD, Exchange 2000/2003 for all sites (16)
- Migration of all NT4 domains into a unified Windows 2000 domain
- Migration of all regional sites from Exchange 5.5 to Exchange 2000/2003
- Remote access strategy, SMS 2.0 implementation, Citrix Metaframe 1.8 migration
- Methods, tools and technologies: Active Directory sites with 22 DCs, 500 clients
Technical Consultant - Windows/Exchange 2000
Münchener Rückversicherung
- Rollout of a Windows 2000 / Exchange 2000 environment incl. Active Directory in a single-forest/multi-domain setup
- Installation, configuration, and testing of a global Windows 2000 / AD environment
- Migration from Exchange 5.5 to Exchange 2000
- Remote access strategy, backup/restore, and disaster recovery concepts
- Methods, tools and technologies: Active Directory 2000, Exchange 2000
Technical Consultant - Exchange 5.5
Münchener Rückversicherung
- 2nd and 3rd level support for Exchange 5.5
- Introduction and testing of Exchange 5.5 tools
- Performance tuning and monitoring
- Administrative tasks
- Methods, tools and technologies: Exchange 5.5
Technical Consultant - Software Distribution
Hypo Vereinsbank
- Support and preparatory tasks for software distribution in all German bank branches
- Methods, tools and technologies: Windows NT 4.0
Technical Consultant / Project Coordination
Verlag Moderne Industrie AG
- Design and implementation of a Windows NT 4 infrastructure (4 sites, approx. 450 clients)
- Implementation of Exchange 5.5 at all locations
- Implementation of a Microsoft SMS 2.0 infrastructure
- IT security concepts
- Methods, tools and technologies: NT 4.0, Novell Netware 3.12, SQL 7.0, SMS 2.0, Exchange 5.5
Technical Consultant - Microsoft Products
Müller Milch GmbH
- Support of the existing Windows NT 4.0 infrastructure
- Rollout concepts for Windows NT 4.0
- Europe-wide migration from MS Mail 3.5 to Exchange 5.5
- Implementation of Microsoft SMS 2.0
- Methods, tools and technologies: NT 4.0, Novell Netware 3.12, SQL 7.0, SMS 2.0, Exchange 5.5
Technical Consultant - DMS / Archiving
Sercon GmbH
- Consulting customers in the document management and archiving environment
- Methods, tools and technologies: NT 4.0, Lotus Notes, SAP/R3 Archive Link, AIX, HP-UX
IT Specialist
Sana Kliniken GmbH
- Concept, implementation and operation of the entire IT infrastructure
- Helpdesk tasks
- Hardware/software support
- Work on IT projects
- Methods, tools and technologies: NT 4.0, Novell Netware 3.12, ERP software, ISDN, RAS, SQL, SMS 1.2, Exchange 4.0/5.0
IT Manager
Photo retail chain with 40 stores
- Operation and support of all IT and POS systems in the stores
- Introduction and administration of an inventory management system
- Methods, tools and technologies: Windows for Workgroups 3.11, Novell Netware 3.12, Office 4.3, Navision
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Insurance, Information Technology, Transportation, Retail, Healthcare, and Manufacturing.
Business Area Experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Project Management, Customer Service, Quality Assurance, and Operations.
Summary
For over 30 years, I have been helping international companies untangle complex IT infrastructures, transform them, and move them securely into modern cloud environments. I specialize in Microsoft-based infrastructures, Identity & Access Management, Cloud Security, and infrastructure architecture — with a focus on environments where there is “no easy solution.”
My focus areas:
- Microsoft 365 & Azure: Identity, Security, Compliance
- Exchange OnPrem ↔ Cloud migrations (20 to 150,000 mailboxes)
- Active Directory, Entra ID, Hybrid Environments
- Cloud Security & Conditional Access, MFA, Defender
- MDM & Microsoft Intune
- Integration of AI technologies (e.g. Copilot, MS Graph + AI, GPT-supported automation)
- Project roles from consultant to architect to crisis solver
I work hands-on, strategically, and across technologies. If you are looking for a senior consultant who not only knows the tools, but understands the scenarios — and can now also think them further with the possibilities of modern AI technologies — then I look forward to new challenges.
Skills
Cloud Services
- Microsoft Azure (Iaas, Paas)
- Microsoft Office 365 (Exchange, Teams, Sharepoint/Onedrive)
- Microsoft Azure Active Directory
- Microsoft Endpoint Management (Intune)
- Azure Virtual Desktop
- Azure Ad Connect
- Veeam Cloud Connect
- Bittitan Cloud Migration Suite
Operating Systems
- Ms Windows 2000 - Windows 10
- Ms Windows Server Nt 3.51 - 2019
- Linux (Redhat, Suse, Ubuntu)
- Vmware Vsphere, Esx(I) Server 2.X – 6.X
- Hyperv 2008 – 2016
- Novell Netware 3.X – 4.X
- Unix (Sco, Solaris -> Basics)
Directory Services
- Microsoft Azure Active Directory
- Microsoft 365 Identity Management
- Microsoft Active Directory, Windows 2000 – 2019
- Novell Netware 3.11 – 4.X
Programming Languages / Tools
- Microsoft Visual Code
- Microsoft Powershell
- Python 3.X
- Scripting
Authentication / Security
- Authentication And Encryption Technologies
- Microsoft 365 Security Management
- Microsoft 365 Compliance Management
- Email Authentication (Spf, Dkim, Dmarc)
- Microsoft Advanced Threat Protection / Defender
- Ms Software Update Server / Wsus
- Vpn/Ip Sec Technologies
- Adfs
- Antivirus Products: Mcafee, Trendmicro, Sophos
Communication & Collaboration
- Ms Exchange 4.0 - 2019
- Skype For Business, Teams
- Microsoft Office 365
- Blackberry Enterprise Server
- Good For Enterprise
Management Tools
- Microsoft Intune (Device Management)
- Quest Migrator For Exchange
- Quest Migrator For Active Directory
- Quest Coexistence Manager For Groupwise
- Quest Migrator For Groupwise
- Quest Notes Migrator
- Quest Consolidator
- Quest Active Roles
- Quest Collaboration
- Ms System Center Configuration Manager
- Email Archiving Systems
- Symantec Netbackup
- Legato Backup
- Tivoli Backup
Databases
- Ms Sql Server 6.X – 2016
- Oracle 7.3, 8.1
- Ms Access
Hardware
- Dell Poweredge
- Various Load Balancers
- Hp Proliant Series
- Hp 3par
- Netapp Filer
Virtualization
- Vmware
- Microsoft Hyperv
Languages
Education
Chamber of Industry and Commerce Munich
Certified Commercial Specialist · Merchandise Management · Munich, Germany
Munich University of Applied Sciences
Vehicle Engineering · Munich, Germany
Certifications & licenses
AI Engineer Core Track: LLM Engineering, RAG, QLoRA, Agents
Udemy (Ed Donner)
AI Leadership Track: Gen AI, Agentic AI for Business Leaders
Udemy (Ed Donner)
Microsoft
VMware 5.5 Certified Professional
VMware 4.0 Certified Professional
VMware 3.5 Certified Professional
IT Network Specialist
Statistics
Experience
Global Experience
Expertise
Qualifications
Profile
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Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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