Otto Haas-Ubuntu Linux System Support
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Experience
Ubuntu Linux System Support
Self-employed
- Linux system support for clients in an enterprise DevOps environment
- Bash shell scripting
- Git
- SaltStack
- Foreman
- Podman/Docker
- Jira
- Confluence
- Daily Scrum meetings
Freelance Lecturer
Self-employed
- Preparation of participants for the LPIC-1 exam of the Linux Professional Institute
- Shell scripting with bash
- Imparting practical knowledge on Debian, Ubuntu, Centos, openSUSE
IT Consultant
Self-employed
- Focus on Linux / Unix consulting
Freelance Consultant
Self-employed
- Coordination of patching activities (ESX on HPE and Lenovo x86 hosts with Linux & Windows VMs) for successful PCI-DSS certification
- Use of ITIL-based change management tools
Technical Manager
Amadeus Data Processing GmbH
- Work with SuSE Linux Enterprise Server (SLES)
- Shell scripting with bash and ksh
- Coordination of vulnerability remediation
UNIX Systems Manager
Amadeus Data Processing GmbH
- Built and led a team of SysAdmins focusing on OS support on AIX with POWER architecture, VIO Server, HMCs and on HP-UX
- Increased use of Linux (SuSE Linux Enterprise Server) since 2005 with migration of applications from HP-UX, AIX, MVS to Linux
- Participation and coordination of migration projects including architecture, proof of concept, implementation, optimization
UNIX System Programmer
Amadeus Data Processing GmbH
- System administration of HP-UX and AIX systems
- Maintenance of backup solutions based on OmniBack and ADSM/TSM
Consultant
CMG GmbH
- System administration and automation of UNIX and INFORMIX installations
Software Technical Support Analyst
Cray Research GmbH
- Installations, upgrades and problem analysis as second level support for UNIX system and network software (UNICOS)
- Integration of UNIX mainframes into heterogeneous environments
Research Assistant
Technical University of Munich
- Scientific collaboration on research projects
- Teaching obligations at the Chair for Operating Systems and Computer Networks
- Supervision of students in exercises, labs, theses, seminars
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Tourism, and Education.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Project Management, Research and Development, and Operations.
Languages
Education
Technical University of Munich
Dr. rer. nat., Computer Science · Computer Science · Munich, Germany
Technical University of Munich
Diploma in Computer Science with minor in Mathematics · Computer Science with minor in Mathematics · Munich, Germany
Certifications & licenses
IHK Munich and Upper Bavaria
Linux Professional Institute
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Otto is based in Munich, Germany.
Otto speaks the following languages: German (Native).
Otto has at least 46 years of experience. During this time, Otto has worked in at least 10 different roles and for 5 different companies. The average length of individual experience is 5 years and 7 months. Note that Otto may not have shared all experience and actually has more experience.
Based on recent experience, Otto would be well-suited for roles such as: Ubuntu Linux System Support, Freelance Lecturer, IT Consultant.
Otto's most recent position is Ubuntu Linux System Support at Self-employed.
In recent years, Otto has worked for Self-employed.
Otto is most experienced in industries like Information Technology, Tourism, and Education.
Otto is most experienced in business areas like Information Technology, Project Management, and Research and Development. Otto also has some experience in Operations.
Otto has recently worked in industries like Information Technology.
Otto has recently worked in business areas like Information Technology and Operations.
Otto holds a Doctorate in Computer Science from Technical University of Munich.
Otto has 3 certificates. These include: Trainer Aptitude Regulation, LPIC-1, and ITIL V3 Foundation Training with Exam.
The availability of Otto needs to be confirmed.
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 26 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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