Markus Halbedel
Senior IT-Infrastructure, Cloud & Security Consultant
Experience
Senior M365 Consultant
BITMARCK GmbH
Developing concepts for the M365 implementation, especially for tenants, Entra ID, Entra Connect, and Exchange Online, following BAS standards (mandatory baseline security requirements) in the "M365 Concept" project, aiming to apply the concepts to Bitmarck's M365 environments and hand them over to the client.
- Conducting an as-is analysis of existing M365 environments, on-premise setups, and BAS standards.
- Creating concepts for tenants, Entra ID, Entra Connect, and Exchange Online according to BAS standards
- Designing and implementing an automated solution to create standardized M365 tenants based on Microsoft M365 DSC (Desired State Configuration)
- Applying the concepts to the M365 environments
- Preparing detailed technical documentation
Senior Cloud & Security Consultant
Dachser SE
Evaluating and implementing cloud solutions based on Microsoft Azure.
- Evaluating and implementing cloud security solutions in the identity area.
- Zero Trust architecture with Conditional Access, MFA, Identity Protection
- Privileged Identity Management (PIM) and role-based access control (RBAC)
- Evaluating and implementing on-premise security solutions in Microsoft Active Directory (Identity).
- AD tiering model according to Microsoft Best Practices including Kerberos hardening
- PAW concept (Privileged Access Workstations)
- Active Directory security analyses Methods, tools, and technologies: Microso
Senior Messaging Consultant
Landesbank Hessen-Thüringen Girozentrale (HELABA)
Supporting the implementation and customization of configuration changes in the local Exchange infrastructure (on-premises mail server) as well as in the hybrid environment.
- Planning and executing pilot and large-scale migrations of mailboxes to Exchange Online.
- Providing technical support for the migration of user mailboxes, room and equipment mailboxes, and public folders.
- Assisting the project manager in technical discussions and decision-making processes.
Exchange Architect
T-Systems Multimedia Solutions GmbH
- Concept for introducing enhanced email security by labeling externally received emails
- Concept for accessing 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, e.g., 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 the on-premises email systems to a private cloud and to Microsoft 365 (Exchange Online)
- Replacing the existing on-premises SMTP gateway with a cloud solution
- Migrating 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 piloting a mail migration from Exchange 2016 to Exchange Online / M365
- Planning and implementing the 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 about 3,000 users
Cloud Consultant
Rathgeber GmbH & Co. KG
- Planning and building a hybrid Active Directory for MS Intune
- Planning and building an MDM environment based on Microsoft Azure Intune (Microsoft Endpoint Manager)
- Intune configuration profiles, Conditional Access, and multi-factor authentication
- Intune Autopilot and modern app management via 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 about 300 users
Senior Consultant
Dachser SE
- Planning and piloting a mail migration from Lotus Notes to Exchange Online / M365
- Planning and piloting a Microsoft Teams rollout / Microsoft 365
- Planning and implementing the 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 about 30,000 users
Senior Cloud Consultant / Architect
Hoval AG
- Supporting the Exchange Online transformation
- Design and management of Advanced Threat Protection (ATP) and spam management with SPF, DKIM, DMARC
- Implementing email compliance with Exchange Online
- Planning the Microsoft Exchange / Exchange Online migration
- Configuring and migrating 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 about 2,000 users
Senior Consultant / Architect
Uni Mozarteum Salzburg
- Analyzing the existing IT infrastructure
- Concept for transforming the existing Micro Focus environment into a Microsoft world
- Planning the migration of Micro Focus eDirectory to Microsoft Active Directory & Azure AD
- Planning the migration from Micro Focus Groupwise to Exchange / Exchange Online
- Introducing O365 and Azure, including Azure services
- Planning 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 about 3,000 users
Senior Consultant
Siteco Beleuchtungstechnik GmbH
- Assistance 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 building a new internal PKI infrastructure
- Planning and building an MDM environment based on Microsoft Azure Intune
- Setting up an Exchange hybrid environment
- Implementing 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 about 2,000 users
Senior Consultant
MediaMarktSaturn
- Analysis of the existing IT infrastructure to plan an international carve-out
- Planning and high-level concept of a future Active Directory infrastructure
- Planning and high-level concept of 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 about 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
- Integration of subsystems with 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
- Integration of subsystems with 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
- Integration of subsystems with 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 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 using 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
- Lotus Domino to Exchange 2007 migration
- Integration and operation of the Exchange 2007 environment in the existing IT landscape
- Connecting 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
Münchener Rückversicherung
- Setting up a feature lab based on the Exchange 2007 RTM version
- Creating a high-level concept for Exchange 2007 (feature list, migration strategies, dependencies, requirements, prerequisites)
- Developing a detailed concept (deployment guide) with a rough cost estimate
- Methods, tools and technologies: Microsoft Exchange 2003, Exchange 2007
Technical Consultant - Microsoft Vista Pre-Study
Münchener Rückversicherung
- Setting up a test environment to evaluate the Microsoft Vista client
- Compatibility testing of client software in use
- Evaluating new features and functions
- Methods, tools and technologies: Microsoft Vista
Technical Consultant / Microsoft Infrastructure
Magazinpresse Verlag GmbH
- Microsoft Windows Active Directory
- Microsoft Exchange 2003 update and patch management
- Implementation 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 / Exchange Specialist
INA - Schaeffler KG
- Migration of MS Exchange 5.5 sites to Exchange 2003
- Operation, monitoring and third-level support of the worldwide Exchange 2003 infrastructure
- Design and implementation of Exchange 2003 extensions
- Methods, tools and technologies: Active Directory 2003, Exchange 2003
Senior Systems Engineer / Project Manager
Munich Reinsurance Company of Australasia
- Design and implementation of storage systems (SAN / NAS)
- Design and implementation of disaster recovery solutions including 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 single Windows 2000 domain
- Migration from Exchange 5.5 to Exchange 2000/2003 at all regional sites
- 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
Munich Reinsurance
- Rollout of a Windows 2000 / Exchange 2000 environment including Active Directory in a single forest/multi-domain
- Installation, configuration and testing of a worldwide 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
Munich Reinsurance
- 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 measures for software distribution in all German bank branches
- Methods, tools and technologies: Windows NT 4.0
Technical Consultant / Project Coordination
Verlag Moderne Industrie AG
- Designing and implementing a Windows NT 4 infrastructure (4 sites, about 450 clients)
- Implementing Exchange 5.5 at all locations
- Implementing 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
- Supporting 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
- Implementing 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
- Advising customers on document management and archiving solutions
- Methods, tools and technologies: NT 4.0, Lotus Notes, SAP/R3 Archive Link, AIX, HP-UX
IT Specialist
Sana Kliniken GmbH
- Design, implementation and operation of the entire IT infrastructure
- Helpdesk tasks
- Hardware/software support
- Participation in 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 cash register systems in the branches
- Implementation and management of an inventory management system
- Methods, tools and technologies: WfW 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, transform, and securely move complex IT infrastructures into modern cloud environments. I specialize in Microsoft-based infrastructures, Identity & Access Management, Cloud Security, and infrastructure architecture – focusing on environments where there is "no easy solution".
My main 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-powered automation)
- Project roles from consultant and 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 scenarios – and now expands them with the possibilities of modern AI technologies – then I look forward to 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
- Hyper-v 2008 – 2016
- Novell Netware 3.x – 4.x
- Unix (Sco, Solaris -> Fundamentals)
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 Hyper-v
Languages
Education
Munich Chamber of Industry and Commerce
Certified Trade Specialist · Inventory Management · Munich, Germany
Munich University of Applied Sciences
Vehicle Technology · 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 Azure Security Engineer MCSE: Communication
Microsoft
MCSA: Microsoft Office 365
Microsoft
MCSE: Messaging
VMware 5.5 Certified Professional
MCITP: Enterprise Messaging Administrator 2010
MCTS: Microsoft Lync Server 2010
MCTS: Windows Server® 2008 R2, Server Virtualization
VMware 4.0 Certified Professional
VMware 3.5 Certified Professional
MCITP: Enterprise Messaging Administrator 2007
MCSE 2003
ITIL - Foundation Certification in IT Service Management
RHCE (Linux Red Hat Certified Engineer)
MCT (Microsoft Certified Trainer)
MCSE NT4 (Microsoft Certified Systems Engineer)
IT Network Specialist
Statistics
Experience
Global Experience
Expertise
Qualifications
Profile
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