Michael F.-IT Systems Administrator
Check rate
Experience
Linux Specialist
Evex-Group GmbH
- Updated production Proxmox server from Debian 10 to 12
- Adapted Ansible playbooks to the environment after the update
- Clustered Proxmox servers
- Migrated VMware to Proxmox
- Resolved customer issues with MySQL servers
- Implemented a backup solution including Mariabackup
- Updated Zabbix monitoring
Linux Specialist
Hitachi Rail GTS Deutschland GmbH
- Developed and implemented a repository mirror for the main Linux distribution package repositories
- Integrated CheckMK monitoring
Subproject Lead
ING DiBa AG
IT project management
Tracked the migration and relocation of DevOps security-critical infrastructures
Assessed bandwidth requirements for network connections
Coordinated leased line suppliers
Automated OS deployments (PXE, Kickstart, Ansible)
Coordinated overall project, stakeholders, and departments
Coordinated and managed the Cisco supplier
Defined, tracked, and reported milestones
Integrated bare-metal servers into cloud architectures
Linux Specialist
SAP AG
- Provided an iPXE server
- Integrated bare-metal servers like HP Superdome Flex into AWS cloud
- Handed over to SAP deployment (Ansible)
Linux Specialist
Deutsche Flugsicherung
Developed a new Linux distribution for automated data center installation and configuration from ISO or PXE install server
Implemented automated deployment of third-party virtual machines via KVM on a data center server
Adapted automation to changes in RHEL
System hardening
Updated packages for new dependencies
Linux Specialist Engineer
noris network AG
- Designing and implementing customer solutions
- Implementing security policies
- Troubleshooting on internal and customer servers
Linux Specialist
SAP AG
- Provisioning an iPXE server
- Integrating bare-metal servers like HP Superdome Flex into AWS Cloud
- Handover to SAP Deployment (Ansible)
Project Lead
Thales Deutschland AG
- Virtualization with KVM, VMware ESXi, Docker
- Implementing RAS access without a security level and for VS-NfD
- Rebuilding and hardening the DMZ, connecting consortium partners
- Project planning (WBS, time and capacity management, risk management)
- Stakeholder management and reporting
- Defining and tracking milestones
Second Level Support
Deutsche Post AG
- Implementing scripts to provide statistics and accounting data to replace manual collection
- Administering RHEL servers
- Administering Postfix with custom application
- Administering VPN connections according to BSI standards
- Automating workflows with shell/Perl scripts
- Implementing security policies
- DevOps rollout with Subversion/Puppet
Unix Operations
Commerzbank AG
- Enhancing a web reporting tool to visualize the current project status
- Deputy team lead
- Administering Solaris E10k cluster
- Datacenter operations
- Coordinating business units
Unix Operating
Commerzbank AG
- Further development of a web reporting tool to visualize the current project status
- Deputy team lead
- Administration of Solaris E10k cluster
- Data center operations
- Coordination of departments
Linux Instructor
QPunkt GmbH
- Instructor for training IT specialists in UNIX/Linux, networks, HTML, and PHP
- Giving freelance presentations
- Preparing teaching materials
Linux Specialist Engineer
noris network AG
- Designing and implementing customer solutions
- Implementing security policies
- Troubleshooting on internal and client servers
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Aerospace and Defense, Banking and Finance, Manufacturing, and Transportation.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Operations, Project Management, and Business Intelligence.
Summary
I have built a solid career in IT, with a main focus on Linux systems administration and network security. I have managed the migration, update and clustering of servers, implemented automation using Ansible and provided robust solutions for backup, virtualization and cloud integrations. I actively tackle challenges from software updates to infrastructure hardening and system deployment.
I combine hands-on technical expertise with years of project and team coordination experience. I believe in creating secure, efficient and scalable IT systems that meet demanding operational requirements. My practical approach and continuous learning help me deliver reliable, up-to-date solutions in dynamic and high-pressure environments.
Skills
It Project Management, Architecture And Implementation Of Security-Critical Infrastructures
Automated Operating System Deployments (Pxe, Kickstart, Ansible)
Integration Of Bare-Metal Servers Into Cloud Architectures
Virtualization With Kvm, Vmware Esxi, Docker
System Hardening According To Bsi Standards
Stakeholder Management, Milestone Tracking And Reporting
Linux/Unix Operating Systems: Rhel, Centos, Fedora, Alma, Debian, Ubuntu, Solaris, Hp-Ux
Virtualization: Vmware Esxi, Kvm, Docker (Lxc)
Automation & Configuration Management: Ansible, Puppet, Kickstart, Ipxe
Devops & Ci/Cd Tools: Git, Gitlab, Svn, Jenkins
Databases: Postgresql, Mysql/Mariadb, Openldap / Slapd
Programming & Scripting: Bash, Python, Php, Sql, C
Network Services & Infrastructure: Apache, Postfix, Dovecot, Dns, Dhcp, Vpn
Project Management Tools: Jira, Confluence, Servicenow, Sharepoint, Otrs
Languages
Education
Friedrich-Alexander University Erlangen
Computer Science · Erlangen, Germany
Berufsoberschule Nürnberg
Subject-specific High School Diploma · Computer Science / Technology Track · Nuremberg, Germany
Vorklasse FOS Fürth
General · Fürth, Germany
Certifications & licenses
IT Systems Administrator
Personal Certification Body gps-cert
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Michael is based in La Massana, Andorra and can operate in on-site, hybrid, and remote work models.
Michael speaks the following languages: German (Native), English (Advanced), Spanish (Elementary).
Michael has at least 18 years of experience. During this time, Michael has worked in at least 8 different roles and for 10 different companies. The average length of individual experience is 1 year and 5 months. Note that Michael may not have shared all experience and actually has more experience.
Based on recent experience, Michael would be well-suited for roles such as: Linux Specialist, Subproject Lead, Linux Specialist Engineer.
Michael's most recent position is Linux Specialist at Evex-Group GmbH.
In recent years, Michael has worked for Evex-Group GmbH, Hitachi Rail GTS Deutschland GmbH, ING DiBa AG, SAP AG, and Deutsche Flugsicherung.
Michael is most experienced in industries like Information Technology, Aerospace and Defense, and Banking and Finance. Michael also has some experience in Manufacturing and Transportation.
Michael is most experienced in business areas like Information Technology, Operations, and Project Management. Michael also has some experience in Business Intelligence.
Michael has recently worked in industries like Aerospace and Defense, Information Technology, and Banking and Finance.
Michael has recently worked in business areas like Information Technology, Project Management, and Operations.
Michael holds a Doctorate in Computer Science from Friedrich-Alexander University Erlangen.
Michael has 1 certificate: IT Systems Administrator.
Michael is immediately available full-time for suitable projects.
Daily rate distribution
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Average rates for similar positions
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 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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