Sebastian Dörr-Willken-Senior IT System Administrator
Check rate
Experience
Senior IT System Administrator
LKA Thuringia
Senior IT System Administrator
Siemens HR
Senior Database Engineer
Lowell Group
Senior IT System Administrator
DekaBank
Trainer Exadata Administration Workshop
Digicom
IT Onsite Coordinator for Oracle Applications
Tech Mahindra
Senior Oracle DBA
Continental AG
Senior Consultant for Due Diligence Oracle
TechM
Senior Exadata Administrator
Commerzbank AG
Senior DBA Horizontal Database Group
Credit Suisse
Senior Application DBA
Deutsche Bahn AG
Oracle Database Administrator
ePost GmbH
Managing Director
Semantic Applications GmbH & Co. KG
- Headquartered in Fulda, Germany, with an international division in Našice, Croatia
- Team members in Germany: 6
- Team members in Croatia: 9
Technical Project Lead
Daimler AG
Systems Database Engineer
DVB Bank SE
Oracle DBA and Backup Teamlead
HP Enterprise Services GmbH
Systems Administrator Data Center Europe
Goodyear Luxembourg Tires SA
Internship Systems Administrator Data Center Europe
Goodyear Luxembourg Tires SA
BA-Student (University of Cooperative Education Gera)
Deutsche Post IT Solutions
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Manufacturing, Banking and Finance, Government and Administration, Transportation, and Automotive.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Operations, Strategy, and Project Management.
Skills
Programming Languages
- Pl/Sql
- Shell Programming
- Python Scripting
- Powershell Scripting
Databases
- Oracle
- Oracle Rac
- Oracle Data Guard
- Oracle Performance
- Oracle Streams
- Mssql Server (2000/2008/2012/2016)
- Sybase
- Mysql
- Postgresql (Postgres)
Tools & Platforms
- Gitlab
- Toad
- Sql Developer
- Ms Project
- Confluence
- Jira
- Ms Office
- Sap
- Informatica (Power Center)
- Gridcontrol
- Cloudcontrol
- Goldengate
- Netapp
- Docker
- Kubernetes
- Ansible
- Sccm
- Scom
- Elk
- Tws
- Automic
Operating Systems
- Unix (Aix, Hp-Ux, Solaris, Linux)
- Windows Server (2000/2003/2008/2012/2016)
Cloud & Infrastructure
- Aws
- Exadata
- Exalogic
Networking & Security
- Network And Firewall
- Oid
- Oracle Database Security
- Backup/Recovery
- Disaster Recovery (Dr) And High Availability (Ha)
Project & Process Management
- Team Lead
- Project Management
- Itil Change Management
- Itil Incident Management
- Itil Problem Management
- Operational Management
- Job Scheduling
- Scrum
- Process Improvements
Languages
Education
University of Cooperative Education Gera
Bachelor's Student · Gera, Germany
Certifications & licenses
Oracle Certified Professional 10g
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Sebastian is based in Fulda, Germany.
Sebastian speaks the following languages: German (Native), English (Advanced), Spanish (Elementary), French (Elementary).
Sebastian has at least 26 years of experience. During this time, Sebastian has worked in at least 17 different roles and for 18 different companies. The average length of individual experience is 1 year and 4 months. Note that Sebastian may not have shared all experience and actually has more experience.
Based on recent experience, Sebastian would be well-suited for roles such as: Senior IT System Administrator, Senior Database Engineer, Trainer Exadata Administration Workshop.
Sebastian's most recent position is Senior IT System Administrator at LKA Thuringia.
In recent years, Sebastian has worked for LKA Thuringia, Siemens HR, Digicom, and Semantic Applications GmbH & Co. KG.
Sebastian is most experienced in industries like Information Technology, Manufacturing, and Banking and Finance. Sebastian also has some experience in Transportation, Government and Administration, and Automotive.
Sebastian is most experienced in business areas like Information Technology, Operations, and Strategy. Sebastian also has some experience in Project Management and Audit.
Sebastian has recently worked in industries like Information Technology, Manufacturing, and Government and Administration.
Sebastian has recently worked in business areas like Operations, Strategy, and Information Technology.
Sebastian holds a Bachelor from University of Cooperative Education Gera.
Sebastian has 2 certificates. These include: Oracle Certified Professional 10g and ITIL Certificate v3.
The availability of Sebastian needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
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.
Similar freelancers
Discover other experts with similar qualifications and experience
Serkan Kaya
Sven Koebnick
Jens Rehsack
Stefan Moisa
Werner Hendricks
Bahriye Eser
Jakub Szepietowski
Dirk Behringer
André Görst
Werner Mühlmann
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a Senior IT System Administrator
Christian Fritsch
Kai Pankatz
Ornel Franck Wora Yeno
Tan Pham
Martin Bausewein
Frank Joraschkewitz
Christian Enderle
Thorsten Matzner
Vicenco Kenk
Andreas Friedrichs
Nearby freelancers
Professionals working in or nearby Fulda, Germany
Sanju Raj Prasad
Niklas Witzel
Michael Gottfried
Tobias Schuetz
Harald Hüfner
Baljinder Kaur
Michael Lasslop
Klaus-Dieter Bleuel
Andreas Günkel
Christopher Kühn
