Windows Server Experts in Cologne
matched in minutes from over 15,000 CVsHire experts who secure Active Directory environments, manage Azure integration and modernize Windows Server workloads across on-premises and hybrid infrastructure. FRATCH matches you quickly and precisely with vetted, available freelancers in Cologne.
Meet FRATCH Experts in Cologne, who have recently used Windows Server
Burhan D.
Last position:
Enterprise Architect & Solution Architect at DB Netz AG
With project PRIZMA, DB will modernize its infrastructure on the one hand, and develop a fail-safe IT landscape on the other hand, which can be restored quickly and securely in case of a disaster.
- Capture current architectures of existing systems as well as methodical consulting and development of target architectures
- Deepen and maintain the building plan / target IT landscape
- Implement technical architecture concepts & architecture descriptions
- Implement migration concepts for updating and further developing the platform and information systems
- Assess submitted improvement suggestions as part of the project
- Capability management: identify capability gaps, develop target visions, and support transformation planning within the enterprise architecture.
- Create a compatibility matrix of the components in use and compare dependencies of specific versions
- Create an IT concept for extending the platform with the following topics: hardware and software requirements, security, licensing, high availability, load balancing, backup & recovery, update strategy, monitoring integration, etc.
- Coordinate with business architects as well as technical architects from the cross-functional architecture area of the PRISMA program for the topics (backup, Active Directory, monitoring, Citrix, and business applications ...)
- Status meetings and alignment of project planning with the Release Train Engineer / Project Manager
- Advise the Release Train Engineer / Project Manager in identifying project risks
- Advise the System Architect Engineers in steering the implementation of the concept
- Implement the IT concept
- Document the infrastructure
Label: MS Project, LINUX, Windows, ORACLE, Java, REST, SharePoint, Microsoft Exchange, UML, Enterprise Architect, BPMN, AZURE, AWS, V-MODEL, Micro Service, VisualStudio, SAP S/4HANA, SCRUM(SAFE), ESB (TIBCO), Python, Innovator, LeanIX (TOGAF), Ansible, Ansible Tower, Ansible Automation, ROBOT, SpringBoot
Markus B.
Last position:
Consultant, Technical Project Manager at Lanxess
- Project: ESU Windows and SQL Server consolidation / Configuration Management in ServiceNow
- Creation of an as-is analysis of all servers worldwide
- Creation of an as-is analysis of all SQL servers worldwide
- Creation of requirements analyses for SQL and server migrations
- Coordination of requirements with partners for migrations to Hyper-V (on-premises) or Azure Cloud
- Moderation of jour fixe meetings
- Creation of roadmaps and solution models for server migrations
- Setup of test scenarios
- Moderation of workshops for the introduction of a Global Admin Team
- Creation of data models (CMDB) in ServiceNow
- Conducting workshops for the CMDB data model
- Creation of solution models for the CMDB
- Creation of seamless configuration and work documentation for the CMDB
- Creation of reports for license management
- Creation of KPIs for data quality in ServiceNow
- Creation of a service catalog
- Moderation of workshops for creating service requests
- Interface between needs analysis and ServiceNow development team
- Systems used: Windows 7, Windows 10, Microsoft Office 365/2010, Windows Server 20xx, SQL Server 20xx, SharePoint, Azure Cloud, Hyper-V, ServiceNow, various tools
Pierre G.
Last position:
Ansible Automation, Windows Third Level Support at DB InfraGO AG
- PRISMA project
- Ansible automation
- Windows third-level support for Windows NT, Windows 2000, Windows 2013, Windows 2016, Windows 2019
Eberhart N.
Last position:
Service and Change Manager; Project Manager at Uniper-Energy
- Project manager for transition and migration of IPC Trader Telephony to 3CX-based dispatcher and Cloud9-based trader telephony
- Planned and managed company-wide replacement of IPC Trader Telephony with 3CX and Cloud9 solutions
- Continuous improvement of implementation processes and development and execution of optimization measures
- Planned, coordinated and tracked delivery of IT equipment and service provision at all sites
- Led a team of IT site managers to ensure IT services were delivered on time, within budget and with required quality
- Defined project scope in coordination with all business resources
- Planned and executed software and hardware rollouts, including user support during implementation
- Communicated with key customers and service organizations and collaborated with traders, telephony architects, app owners, testers and technical IPC teams
- Conducted stakeholder analysis for creation and maintenance of change management processes
- Managed full change process: prepared change requests, defended them in change board, communicated at company and user level, and supported change implementation
Ralph K.
Last position:
Product Owner / Business Owner at AXIS Management Consulting GmbH
- Full product responsibility from a business perspective: requirement analysis, UX design, product strategy, and go-to-market implemented without an internal dev team using fully AI-supported development (Claude Code / Anthropic)
- Technical differentiation: KRITIS-compliant air-gapped deployment (Windows/NSIS), GDT interface for PVS integration, DATEV-LODAS export for payroll
- Managed pilot operation with initial external client (Dormagen medical practice): structured requirement gathering, test support, error analysis, and release management
- Developed rollout and sales strategy for market entry in the segment of private practices and small medical centers
- Human-in-the-Loop development principle: business decision → AI implementation → manual review → approval → release – each sprint documented in Jira (TIME project), every change traceable via co-authored commits
- Product outcome: Tauri/Rust desktop app with GDT watcher, multi-tier model (Starter/Professional/Enterprise), cloud mirror on Hetzner/Traefik, complete ISMS framework based on ISO 27001 and BSI basic protection as product foundation
- Direct method validation for the test manager role: hands-on experience with quality assurance of AI-generated products from a user perspective, review gate discipline, release approval under GDPR and the EU AI Act
Farhad N.
Last position:
Sales Engineer for DACH at AudioCodes Germany
- providing technical assistance to the sales force during sales calls
- providing pre-sales technical support
- providing technical support during first time installation of new AudioCodes products together with partner/ end-customer
- pre-sales technical interface to the channel/partner and managing of technical knowledge transfer to the partners
- giving customer presentations and hands-on product demonstrations (e.g., AudioCodes Live Cloud, Express, OVOC)
- providing product training to customers, prospects and sales during the pre-sales phase mainly AudioCodes endpoints like e.g., IP Phones, MTRs
- leading RFPs/RFI technical responses
- providing technical assistance to marketing for regional events (e.g., seminars, roadshows)
- mainly focused on AudioCodes IP Phones (Generic SIP/Native Teams), AudioCodes MTRs, AudioCodes Collaboration Bars, Jabra endpoints, Sennheiser/Epos endpoints
- management of endpoints like above via AudioCodes One Voice Operation Center and maintaining of this environment for customer workshops/ calls
- management of AudioCodes IP Phones via Microsoft Endpoint Manager/ Intune and maintaining of this environment for customer workshops/ calls
- building of automated cloud workflows (Power Automate) for internal AudioCodes DACH processes
- trusted advisor for Microsoft products which interfere with AudioCodes products for DACH region
Ingo C.
Last position:
Founder, freelance CMS expert at CMS Consulting Cousin
- Freelance work as a CMS expert
Saood Y.
Last position:
Senior Application Owner at an international energy company
Further development of the application landscape for planning, forecasting and pricing
Communication with internal stakeholders to homogenize the application landscape across all entities
Optimization of vendor management
API and batch processing
Creation of operational concepts
Ensuring compliance with regulations and operational processes
Participation in solution design as well as implementation and further development of new applications and services
ServiceNow
Virtual Machines (Windows / Linux)
M365 Products
Azure DevOps
Web Applications
Robert M.
Last position:
Air traffic tax German Customs Administration SOAP Webservices Client Requests at Team GmbH
In the citizens' and business customer portal of the Customs Administration, airlines submit applications for departures and landings every month
These applications are forwarded to the caseworkers via SOAP web service and, after review and processing, any queries or notifications are returned via SOAP web service
PL/SQL programming of SOAP webservices client requests for HTTP/XML message exchange between the BuG portal and the caseworkers
New creation and change requests for Forms and Reports 12 modules
Forms applications start and read SOAP webservice requests via PL/SQL packages, process them and send Reports 12 documents to the airlines
Gazi B.
Last position:
Senior IT Architect, SAP, SAP BTP Architect, CPI Senior Consultant and Architect at Uniper Corporate IT
Developing and implementing IT architectures for business-critical applications, BCM/ITSCM, SAP, BTP and S/4HANA, Azure, interfaces and IT infrastructure according to Uniper security guidelines and compliance policies
IT cloud infrastructure management: Requirements management and SLA definition for critical SAP and non-SAP applications and infrastructures based on the Key Production Environment algorithm; creating a conceptual target architecture; creating agile project plans for migration; risk management and vulnerability analysis; developing training content and e-learnings; establishing and optimizing risk management processes; creating action catalogs, architectures and ITSCM/emergency plans; identifying and managing internal and external partners
Developing BCM/ITSCM concepts and IT infrastructure architectures for business-critical applications according to Azure Cloud, SAP BTP and Uniper governance frameworks; documenting and implementing ITSCM/emergency plans in line with disaster recovery patterns; creating training materials and coordinating training sessions; testing, simulating and optimizing BCM/ITSCM plans and IT architectures; ongoing training of management and staff on IT architectures, operating models, SAP BTP as well as BCM and emergency plans
Technical lead of the SAP services team: Managing and coordinating external vendors, service owners and application managers; developing and implementing ITSM processes (incident, problem, change, SLM, IT security, provider management, ITSCM, asset and configuration management); training internal and external service providers and service managers; optimizing IT service contracts and OLAs; updating the service catalog; communicating and escalating issues; defining responsibilities and monitoring SLA criteria; conducting root cause analysis; partly acting as release manager for SAP ERP releases
Migration: Requirements management, budget and financial planning; risk management; defining and implementing transformation and migration plans; weekly reporting to Uniper vice presidents and senior management; maintaining project plans and backlogs in Jira and Azure DevOps; managing up to 50 internal and external stakeholders; workshops and meetings; quality assurance: defining quality gateways and monitoring
Test management: Creating and documenting test plans; evaluating test risks; identifying stakeholders for test plans; documenting test scenarios; defining error categories and quality gateways; coordinating and executing tests
Sirak D.
Last position:
Cyber Security Support Engineer at Log(N) Pacific
- Implementing secure cloud configurations with Azure Private Link, Network Security Groups, Microsoft Defender for Cloud, and Azure Regulatory Compliance for NIST 800-53, PCI DSS, and HIPAA/HITRUST, resulting in an 88% reduction in security incidents over the same period.
- Troubleshooting and supporting Microsoft Azure services, including Microsoft Sentinel (SIEM), Virtual Machines, Azure Monitor, and Azure Active Directory.
- Developing KQL queries to support the Log Analytics workspace and Microsoft Sentinel, resulting in 1 new SIEM dashboard and 4 workbooks.
Discover over 15,000 top freelancers
Statistics of experts using Windows Server
Aggregated from the professional profiles of matched freelancers.
Experience
21 years (Germany: 23 years)
Position duration
2 years (Germany: 5.3 years)
Positions per freelancer
20 (Germany: 17)
Top business areas
Information Technology, Project Management, Operations
Top industries
Information Technology, Banking and Finance, Manufacturing
Certification focus areas
Information Technology, Project Management, Operations
Bachelor's degree or higher
100% (Germany: 69%)
Master's degree or higher
33% (Germany: 38%)
Doctorate
17% (Germany: 7%)
Certifications per freelancer
6 (Germany: 4)
Most common languages
German, English, Turkish
Speak two or more languages
82% (Germany: 97%)
Based on our profile pool as of 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Cologne are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Discover detailed Windows Server rate benchmarks:
Explore rate insightsAverage rates of experts in Cologne using Windows Server
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Windows Server experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (100%)
- Banking and Finance (73%)
- Manufacturing (73%)
- Telecommunication (64%)
- Chemical (55%)
- Energy (55%)
- Government and Administration (45%)
- Food and Beverage (36%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core platform
Windows Server is Microsoft’s server operating system for running business infrastructure, identity services, applications, databases and network resources. It supports on-premises data centers, private clouds and hybrid environments that connect local systems with Microsoft Azure.
Infrastructure services
Windows Server specialists design and operate the core services that keep organizations connected and productive. Their work often includes:
- Active Directory Domain Services and Group Policy
- DNS, DHCP, file and print services
- Hyper-V virtualization and failover clustering
- Remote Desktop Services and access control
Ecosystem and tooling
The platform works closely with Microsoft technologies such as Entra ID, Azure Arc, Microsoft 365, SQL Server and System Center. PowerShell, Windows Admin Center, Desired State Configuration and infrastructure-as-code tools support repeatable administration, monitoring and automation across server estates.
When expertise matters
Companies bring in freelance Windows Server experts during migrations, audits, consolidation projects and security improvements. They can replace aging domain controllers, move workloads to Azure, recover from incidents or prepare infrastructure for acquisitions and office expansions. In Cologne, remote delivery often works well, while network changes and data-center work may require on-site collaboration.
Delivery quality
Strong professionals start with a clear inventory of identities, workloads, dependencies and recovery targets. They document changes, test rollback plans and apply least-privilege access rather than making undocumented fixes. Experience with patch management, backup validation, certificate services and incident response is valuable for production environments.
Choosing a specialist
Look for evidence of hands-on work with the exact Windows Server versions, identity model and virtualization stack used in the project. Ask how the specialist approaches privileged access, high availability, disaster recovery and monitoring. Clear documentation, careful change control and the ability to explain risks in German or English are practical signs of a good fit.
Frequently asked questions
Need clarity? These are the questions we hear most often about Windows Server.
Windows Server provides the infrastructure behind business networks and applications. Companies use it for identity management, file services, DNS, virtualization, remote access, databases and workloads that need integration with Microsoft Azure.
Windows Server is often chosen when an organization relies on Active Directory, Group Policy, Microsoft SQL Server or other Microsoft applications. Linux can be a strong alternative for many web, container and open-source workloads, so the right choice depends on application compatibility, existing skills and operating requirements.
Windows Server work commonly connects with Active Directory, PowerShell, Hyper-V, Microsoft Entra ID, Azure, networking, backup systems and endpoint security. Knowledge of virtualization, cloud migration and scripting helps a specialist manage the wider environment rather than only individual servers.
Windows Server projects vary from a carefully scoped migration to a complex redesign of identity, storage and high availability. The specialist should have proven experience with the relevant version, workload and risk level, especially when changes affect authentication or business continuity.
Windows Server administration can often be performed remotely through secure management tools and documented change processes. On-site work may still be needed for data-center access, physical hardware, network cabling or a migration that requires close coordination with a Cologne-based team.
Windows Server changes should begin with an inventory of domains, trusts, roles, dependencies, privileged accounts, backups and recovery objectives. A careful specialist confirms the maintenance window, tests the change where possible and prepares a rollback plan before touching production.
Windows Server quality is visible in reliable documentation, controlled permissions, tested backups and predictable maintenance procedures. Ask for examples of incident recovery, migration planning and automation, then check whether the specialist explains trade-offs clearly instead of proposing risky shortcuts.
Windows Server remains relevant when companies connect local identity, applications and file services with cloud platforms. Hybrid work requires specialists who understand Azure integration, Entra ID, Azure Arc, network security and the boundaries between on-premises systems and cloud services.
The average hourly rate of freelancers in Cologne, Germany who have used Windows Server in their recent projects is 108 €, which corresponds to a daily rate of about 861 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Windows Server in their recent projects, 100% hold at least a Bachelor's degree, 33% hold at least a Master's degree, and 17% hold a doctorate.
On average, freelancers in Cologne, Germany who have used Windows Server in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Cologne, Germany who have used Windows Server in their recent projects are German (100%), English (82%), and Turkish (18%).
The most common industries among freelancers in Cologne, Germany who have used Windows Server in their recent projects are Information Technology (100%), Banking and Finance (73%), and Manufacturing (73%).
The most common business areas among freelancers in Cologne, Germany who have used Windows Server in their recent projects are Information Technology (100%), Project Management (73%), and Operations (64%).
Main locations of FRATCH Experts, who have recently used Windows Server
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin 
Hamburg 
Munich 
Frankfurt 
Stuttgart 
Dusseldorf 
Essen Countries:
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