Xen Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Xen
Serge Kalinin
Last position:
MLOps (machine learning operations) at REWE Digital GmbH
- It is like a startup within REWE, where we have to build a new forecasting system on Google Cloud Platform from the scratch. Although, officially my role is called MLOps, my actual tasks also include development of data processing pipelines (data engineering) and data scientists tasks such as feature engineering and model trainings.
- GCP: Terraform (tofu), Vertex AI (Kubeflow), Cloud Run, IAM, Google Cloud Storage, BigQuery, Artifact Registry
- Data engineering: Snowflake as the main data warehouse, Terraform, DBT for data model implementations
- CI/CD: GitLab. We have built a CI/CD pipeline that automates deployments of new releases up to production environment
Andreas Fischer
Last position:
Project Manager & Portfolio Owner for Infrastructure (Automotive) at MHP Management- und IT-Beratung GmbH
- Overall coordination of service providers for all infrastructure topics at a production site being set up in Baden-Württemberg
- Design and finding solutions for internet connectivity, building office communication networks, setting up WLAN in production and administration buildings, IP address management, password policies, time tracking, access control systems, backup strategies, emergency power planning, operating concepts, cost planning, event management, workplace setup including laptop/mobile phones/telephony, remote support, print servers
- Selecting suitable external service providers and planning to meet needs for spare parts, repairs, on-site service, network and workplace support including on-site system replacement by providers
- Choosing suitable external service providers for facility management and building technology (fiber optic connections, data center infrastructure, cable ducts etc.)
- Coordination with clients and service providers
- Escalation management, schedule control
- On-site presence for service meetings and managing service providers
Arkadius Sikora
Last position:
Architect; Senior Developer; Full Stack Developer; DevOps Lead at Bitmarck Holding GmbH
- Requirement engineering for Ombudsstelle and creation of technical user stories for EPA V3
- Handling of objections and revocations via mail and letter with high transaction mail volume
- Coordination with other teams on interfaces
- Design of a highly available, high-throughput solution on OpenShift with Java backend microservices
- Implementation and extension of microservices
- Infrastructure setup for deployment on OpenShift/Kubernetes including Jenkins pipelines
- Integration with BitIAM, TI-M Fachdienst, Consent Keeper and FDV
- Capture of requirements from DevOps operations and business units
- Continuous integration and Scrum practices
- Use cases: Kassenfusion, Opt-Out, Last Test, Widerspruchsmanagement
- Integration test automation and feature extensions including Spring Boot 3 updates
Frank Bergmann
Last position:
System Engineer at Frequentis Comsoft
- Migrate company software to RHEL10
- Development in Bash, Python, C, Ansible
Andreas Ilias
Last position:
Cybersecurity Specialist Assessor at Bundesnetzagentur
- Recognition of national notified bodies
- Preparation of cybersecurity competency reports
- EU Radio Equipment Directive
David Bleyer
Last position:
Acting Partner at Bliestal Consulting UG
- Redesigning cablewise infrastructure with CAT 8.1 keystones, measuring the speed and quality of the new installation with Pockethernet, documentation at a local saddlery
- CAT 8.1 installation and building a data center, site linking, VPN and VLAN configuration for a local car dealership, implementation of IT-Security standards like virus protection (G Data) and firewalling (OPNSense)
- Relocation of a tax office with redesign of the IT infrastructure, virus protection (G Data) and backup solutions (QNAP)
- Planning, conception and implementation of an inhouse data center, BSI-compliant for commercial laundry (including Proxmox-based virtualization of existing infrastructures, QNAP, G Data, OPNSense, APC)
- Implementation and conception of security solutions in the SME sector
- Collaboration on the IT-security concept for the Bremen network of authorities (in the dLAN network)
- Creation of IT-security concept VOIS (modules MESO, KFZ/iKFZ) including audit preparation for KBA
- Expansion of the IT-security concept for the online service for electronic residence registration (eWA) to include use as an eFA (one-for-all) service (nationwide)
- Expansion of the IT-security concept to include modules wos & wvp
- Concept development for the implementation of DIN SPEC 27076 at MSEs and SMEs
- Creation and evaluation of emergency concepts
- Creation and evaluation of response actions and BCM plans
- Assessment of existing business continuity management (ISO 22301)
- Development of BCM strategy options
- Conducting awareness training
Dirk Behringer
Last position:
Senior Consultant Database Administration and SQL at Bliestal Consulting UG
- Complete redesign of IT infrastructure including setup of a server room according to BSI standards, new network concept and planning.
- Development of security concepts and IT security consulting for the DHCP/DNS election sector.
- Support of project management for the customer in the VOIS | MESO area.
- Technical support for setting up the IT infrastructure in new offices, including firewall configuration, router setup and network planning.
- Setup and configuration of the service management and ticket system JIRA.
- Implementation and administration of the Azure (Entra) environment for all employees.
- Setup and administration of the Confluence environment.
- Planning, setup, configuration and administration of the entire Atlassian Collaboration Suite.
- Development of BCM strategy options.
- Development and implementation of measures and creation of BCM plans, as well as evaluation of existing BCM.
André Görst
Last position:
IT Consulting Project Management / Engineering Subproject Management at T-Systems (on assignment for government agencies)
- Projects for federal networks (NdB).
- CR management, EoL change requests, design and documentation according to ITSCM.
- Data center planning.
- Project management and engineering subproject management.
- Software development for virtual server environments according to BSI.
Nils Meyer
Last position:
Database Architecture for PostgreSQL at ComputaCenter / Deutsche
- Planning and documentation of database architecture and integration with other components provided by other teams and vendors
- Extensive documentation for the architecture, security, access control, encryption, roles and user management, backup and restore, disaster recovery and general operations
- Deployment of database clusters over 2 locations with 2 availability zones each
- Automation of deployment and operations including backup using Ansible
- Hardening of the database and operating system
- Migration of existing stand-alone database systems to cluster setup
- Technologies: PostgreSQL, Patroni, etcd, barman, RedHat Enterprise Linux 9 (RHEL), Ansible, Ansible Automation Platform, TLS, Hashicorp Vault, LUKS
Frank Alexa
Last position:
Business Analysis, Process Optimization, Requirements Engineering, Documentation, Training, Support at Private sector, small businesses, partnerships
- Restructured network architecture/topology and then installed, configured, and tested the network at a small company.
- Fixed server (permissions and roles) and connection issues (WAN, (V)LAN, WLAN).
- Supported and maintained the infrastructure.
- Created documents like manuals, architecture, and design documents.
- Revised manuals and technical documents and created VBA macros.
- Used AI and basic prompting as well as writing AI queries.
- Adjusted workflows to meet legal requirements and improved existing workflows.
- Conducted training and workshops for adjustments, updates, and changed workflows.
- Modeling basis: BPMN.
- System environment: MS Office 2019/365, Win10/11, Teams, Netgear (switch), QNAP, Synology (NAS), Linux (Ubuntu).
Mirco Schmidt
Last position:
Founder & Managing Director at ONE Energy-IT GmbH
- Infrastructure consulting
- Project management
- Mentoring for IT managers & teams
- Management consulting
- Energy data monitoring
- Energy data collection
- Energy data management
- IT system support for Linux, FreeBSD, Windows
- Server operations (incl. monitoring)
- Firewalls & VPNs
Discover over 15,000 top freelancers
Statistics of experts using Xen
Aggregated from the professional profiles of matched freelancers.
Experience
24 years
Position duration
2.1 years
Positions per freelancer
19
Top business areas
Information Technology, Operations, Quality Assurance
Top industries
Information Technology, Telecommunication, Education
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
50%
Master's degree or higher
33%
Doctorate
17%
Certifications per freelancer
5
Most common languages
German, English, French
Speak two or more languages
100%
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Germany 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.
Average rates of experts in Germany using Xen
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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
Xen in practice
Xen is a virtualization stack built around a hypervisor that runs multiple guest systems on one physical server. Companies use it for server consolidation, isolated test environments, lab setups, and hosted infrastructure where strong separation matters.
Where it fits
- Private cloud and infrastructure builds
- Legacy guest maintenance and migration work
- Virtual appliance hosting
- Secure multi-tenant server setups
- Disaster recovery and failover planning
Core ecosystem
Strong Xen work often touches Xen hypervisor, Xen Project tooling, and platforms such as XCP-ng or Citrix XenServer. Specialists also work with KVM, libvirt, QEMU, storage back ends, and virtual networking layers when a company compares or migrates between stacks.
What good specialists do
A strong Xen specialist understands CPU pinning, memory allocation, paravirtualized drivers, and guest optimization. They can read host logs, trace boot issues, manage templates, and keep performance stable across Linux and Windows guests.
When companies bring help
Freelance expertise is useful when a host cluster is unstable, a migration is blocked, or older virtualization estates need care without full-time staffing. In Germany, this often comes up in data centers, software vendors, and industrial IT teams that still rely on durable on-prem systems.
Collaboration and delivery
- Host installation and hardening
- Guest provisioning and image management
- Live migration and maintenance planning
- Network bridge and storage configuration
- Troubleshooting and upgrade support
Clear documentation matters. Good professionals leave behind repeatable runbooks, rollback steps, and naming schemes so local teams can operate Xen environments confidently after the project ends.
Frequently asked questions
Not sure where to start with Xen? These answers cover the essentials.
Xen is used to run many isolated guest systems on one physical host. Companies choose it for server consolidation, test and lab environments, secure hosting, and workloads that need strong separation between guests.
Xen is often compared with KVM and VMware when teams are choosing a virtualization layer. Xen is known for its long history in hosting and private infrastructure, while KVM is tightly tied to the Linux kernel and VMware is often chosen for broader enterprise tooling. The right choice depends on operations style, guest mix, and existing infrastructure.
Xen is the hypervisor technology, while Citrix XenServer and XCP-ng are platforms built around it. In practice, many teams search for the stack by the platform name first, especially when they are managing hosts, pools, and management tools rather than the hypervisor alone.
A strong Xen specialist usually also knows Linux administration, storage, networking, and guest troubleshooting. Skills with bridges, VLANs, NFS, iSCSI, boot loaders, and automation help a lot when the work moves beyond a basic install.
Xen projects need someone who has handled real host and guest issues, not just installed a package once. Small tasks may only need a focused specialist, while migrations, cluster design, or recovery work benefit from broader infrastructure experience.
Yes, most Xen work can be done remotely if the host access, console paths, and change process are clear. On-site time in Germany can still help for hardware failures, network changes, or environments with strict access rules.
Look for practical evidence around Xen host setup, guest performance, and recovery from failures. Good specialists explain trade-offs clearly, document changes, and can describe how they handled migration, storage, and networking issues in past work.
Xen help is usually needed when guests are unstable, migrations fail, storage feels slow, or the team is unsure how to upgrade safely. It is also a good time to bring in help when a legacy Xen estate needs cleanup or a move to another virtualization stack is being planned.
The average hourly rate of freelancers in Germany who have used Xen in their recent projects is 111 €, which corresponds to a daily rate of about 887 € based on an 8-hour working day.
Of the freelancers in Germany who have used Xen in their recent projects, 50% hold at least a Bachelor's degree, 33% hold at least a Master's degree, and 17% hold a doctorate.
On average, freelancers in Germany who have used Xen in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers in Germany who have used Xen in their recent projects are German (100%), English (100%), and French (55%).
The most common industries among freelancers in Germany who have used Xen in their recent projects are Information Technology (91%), Telecommunication (73%), and Education (55%).
The most common business areas among freelancers in Germany who have used Xen in their recent projects are Information Technology (100%), Operations (91%), and Quality Assurance (82%).
Main locations of FRATCH Experts, who have recently used Xen
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 Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
