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10/2025 - today
Software Developer
Development of procedures for data migration, testing, bug fixing, code review, and documentation creation
Technologies: MS SQL Server, SQL, T/SQL, MS Visual Studio, Confluence, Jira, Git
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04/2023 - 09/2025
Senior Consultant
Database optimization, backup implementation, patch and update application, server and database environment documentation, critical infrastructure (KRITIS) documentation, report creation
Technologies: Oracle, RMAN, SQL, PowerShell, Git, Jaspersoft
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12/2021 - 01/2023
Database Administrator
Coordination of technical changes and management of IT providers in the operation of databases, optimization of system environments and databases (indexing, partitioning), support and coordination of incidents, project work (conversion of existing infrastructure to new technologies, services and providers)
Technologies: Oracle, RMAN, SQL
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12/2020 - 11/2021
Technical Employee Information Technology
Project (temporary staffing) 12/2020 - 11/2021
Sub-project manager, identifying suppliers and organizing presentations, developing the project charter and communication plan, planning the rollout and communicating with employees, implementation and testing phase, creating technical documentation and knowledge base articles for IT and users
Technologies: MS PowerPoint, Confluence, Jira, KnowBe4
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01/2020 - 11/2020
IT Specialist Technical Documentation
Project (temporary staffing) 01/2020 - 11/2020
Creation of technical documentation in accordance with BSI IT baseline protection catalogs, creation of IT security concepts for IT systems
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07/2019 - 12/2019
Application Administrator
Project (temporary staffing) 07/2019 - 12/2019
Support for middleware components and database systems, monitoring of applications, development of scripts, reporting, data maintenance
Technologies: MS SQL Server, Oracle, SQL, PowerShell, VBA, Apache, JBoss, Tomcat
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10/2018 - 06/2019
Software Developer
Development of customer-oriented software solutions, new/further development, service and support, project management
Technologies: MS SQL Server, SQL, PHP, JavaScript, JobRouter
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12/2017 - 09/2018
Solution Consultant
Interface between customers and development department, recording customer requirements, advising customers on site, configuring software
Technologies: MS SQL Server, Oracle, SQL, Confluence, Jira
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05/2016 - 11/2017
Technology Consultant
Project (temporary staffing) 01/2017 - 08/2017
Responsible for a satellite test system, selection of the necessary hardware (server, switch), management of hardware delivery and production of the test system; contact person for other departments and specialist areas
Project (temporary staffing) 10/2016 - 12/2016
Evaluation of various documents for an HMI style guide, transfer and compilation of suitable data, comparison of transferred data
Project (temporary staffing) 05/2016 - 09/2016
Supporting controlling in the analysis of project stages, reporting, database development
Technologies: MS SQL Server, SQL, VBA, MS Access, MS Excel
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07/2015 - 10/2015
System Engineer
Consolidation of hardware and software documentation, software packaging, implementation of updates on the PCs used, rollout of BIOS and firmware updates
Technologies: Confluence, Jira, DSM Frontrange
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02/2015 - 06/2015
Database Developer
Project (temporary staffing) 02/2015 - 06/2015
Database development, data control, reports, checking and correcting T/SQL statements, creating patches (data correction and database changes)
Technologies: MS SQL Server, SQL, T/SQL
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12/2012 - 12/2014
Data Warehouse Developer
Creating and expanding ETL processes, monitoring loading processes and responding to interruptions, developing test functions to monitor processes, creating ad hoc reports, managing the database (monitoring, administrative tasks)
Technologies: MySQL, SQL, Pentaho, JavaScript
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06/2012 - 11/2012
IT Team Leader
Management of IT infrastructure (2 system administrators), planning and implementation of projects, planning and implementation of technical security measures
Technologies: Windows, MS SQL Server
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01/2008 - 04/2012
Senior Support Engineer
Support Desk Team Leader (5 Support Engineers, 1-2 trainees), planning workflows and creating documentation, developing daily check routines, error analysis, configuring and maintaining the ticket system, creating ad hoc reports, master data maintenance for data management
Technologies: Informix, MS SQL Server, Oracle, SQL, Debian, Red Hat, Shell Script, Active Directory, TrackIT
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08/2005 - 12/2007
Support Engineer
Classification of messages in the ticket system, error analysis, creation of ad hoc reports, user administration, master data maintenance for data management
Technologies: Informix, Oracle, SQL, Debian, Red Hat, Shell Script, Active Directory
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03/2005 - 07/2005
Network Administrator
Monitoring of the nationwide network, initiation of countermeasures in the event of a malfunction, coordination of field service technicians in the event of a malfunction, escalation of line malfunctions to carriers
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09/1998 - 06/2003
Consultant and Application Developer
Programming interfaces and functions, creating screens, creating test cases and performing Y2K tests, analyzing and rewriting Cobol programs
Technologies: DB2, SQL, Cobol, IBM Mainframe, JCL, REXX, BonnDIAS, COOL:Gen
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06/1989 - 09/1996
Navigator / System Administrator (IBM ES9000)
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Technologies: IBM Mainframe, MVS, JCL, REXX
