Project History

Here is a list of project activities over the past few years.

Projects with a duration of only a few days were not taken into account.

Industry Subject Participants Language
Implementation of the BAV processes of other clients into the platform
since 06 / 2024
Tasks
  • Integration of new clients' business processes into the existing platform
  • Provision of client-specific evaluations and interfaces
  • Deployments and support tasks
Roles
  • Application developer
  • Web developer
Skills
Windows, Java, JIRA, Git, IntelliJ IDEA, MVC, MS Teams, Linux, Oracle, Spring, JUnit, Kanban, REST, MS Azure Dev Box, Apache Tomcat, Gradle, Scrum
2nd/3rd level support, monitoring and operation for various customers in the B2B and B2C environment
10 / 2019 to 01 / 2024
Tasks
  • Ticket-based processing of error messages from customers
  • Implementation of software deployments (Blue-Green / Canary)
  • Bugfixing and software enhancements
  • Log file and data analysis
  • Performance management
  • System monitoring
  • Scripting for analysis purposes etc. (Groovy, Bash)
  • Knowledge management and transfer
  • Induction of new employees
Roles
  • Supporter (3rd level)
  • Supporter (2nd level)
  • Onboarding supervisor
  • Consultant
Skills
Windows, PHP, Bash, SAP Commerce, JIRA, Linux, Kanban, GitHub, Groovy, Confluence, Scrum, Splunk, Spryker, MS Azure DB, Kubernetes, TeamCity, Instana, OpsGenie, Pingdom, Grafana
New implementation and design of the web store of a jewelry chain based on Microsoft Azure
05 / 2018 to 10 / 2019
Tasks
  • Implementation of backend extensions based on SAP Commerce
  • Integration of the FACT-Finder search engine
  • Performance optimizations
  • Error analysis and bug fixing
Roles
  • Database developer
  • Application developer
Skills
Windows, Java, SAP Commerce, Git, JIRA, IntelliJ IDEA, JUnit, Apache Log4J, Spring, JSP, FACT-Finder, Apache Tomcat, MS Azure DB, Apache JMeter, Scalyr
Further development of the online store of a retail chain for streetwear and sneakers
06 / 2017 to 05 / 2018
Tasks
  • Implementation of numerous enhancements based on SAP Commerce
  • Expansion to include web analysis and tracking tools (e.g. Econda)
  • extensive SEO enhancements
  • Search engine optimizations
Roles
  • Web developer
  • Application developer
Skills
Windows, Java, SAP Commerce, Git, IntelliJ IDEA, JIRA, Spring, Oracle, Apache Log4J, JSP, Apache Tomcat, Apache Solr
Further development and optimization of the store platform of a Europe-wide shoe discounter
05 / 2012 to 06 / 2017
Tasks
  • SAP Commerce development for the implementation of additional features
  • Integration of external service interfaces (Inxmail, Hermes, Paypal)
  • Integration of a service based Customer Relationship Management System (ProData)
  • Integration of Adobe Scene7 for managing rich media data
  • Integration of Adobe Dynamic Tag Management (DTM)
  • numerous SEO enhancements and optimizations
Roles
  • Application developer
  • Database developer
Skills
Windows, Java, SAP Commerce, IntelliJ IDEA, Git, Linux, JUnit, Spring, Apache Log4J, Oracle, JSP, Apache Tomcat, Adobe Scene7, Trac, Apache Solr
Implementation and expansion of the shop platform within the drive-in division of a supermarket chain
05 / 2011 to 05 / 2012
Tasks
  • Integration of SAP Commerce-based Product Content Management (PCM)
  • Extension of product synchronization at catalog level
  • Provision of numerous additional store features
Roles
  • Web developer
  • Application developer
Skills
Windows, Java, SAP Commerce, Linux, JUnit, Spring, Oracle, Apache Log4J, JSP, Eclipse, Subversion
Implementation of the store platform of an international wholesale company based on SAP Commerce
02 / 2011 to 05 / 2011
Tasks
  • Implementation of UI functions in predefined JSP templates
  • UI optimizations
  • Integration of the Endeca search engine
  • Creation of integration and unit tests
Roles
  • Application developer
  • Database developer
Skills
Windows, Java, SAP Commerce, JUnit, Apache Log4J, Oracle, JSP, Eclipse, Subversion, Trac, Endeca
Refactoring and integration of legacy systems for material planning and picking
01 / 2010 to 01 / 2011
Tasks
  • Analysis of existing Perl code
  • Porting the given functionalities to PHP
  • Revision of the data model
Roles
  • Database developer
  • Application developer
Skills
Windows, PHP, Linux, Oracle, Subversion, Perl
Creation of a component-based web application for order entry for sales representatives in the clothing industrys
05 / 2009 to 12 / 2009
Tasks
  • Conception of the application in coordination with the customer
  • Design and implementation of UI templates
  • Data modeling
  • Implementation of the application logic
Roles
  • Database developer
  • Consultant
  • Web developer
Skills
Windows, Java, MySQL, JUnit, Apache Log4J, HTML, CSS, Subversion, Mantis, Apache Wicket, JAXB
Creation of an intranet application for the aggregation and evaluation of large amounts of data in the health insurance sector
01 / 2009 to 04 / 2009
Tasks
  • Optimization of the data model to increase query execution speeds
  • Creation of a web application for executing predefined queries and exporting the results to Excel
Roles
  • Database developer
  • Web developer
Skills
Windows, Oracle, MS Excel, ASP .NET
Extension, refactoring and error correction of the product data management software of a clothing manufacturer
03 / 2008 to 11 / 2008
Tasks
  • Analysis of code quality and performance
  • Optimization of the existing code base
  • Extension of the existing application with multi-client capability
  • Dynamization and expansion of reporting capabilities
Roles
  • Application developer
  • Database developer
Skills
Windows, Java, Oracle, Eclipse, Subversion, Mantis, Crystal Reports
Merging several Delphi applications into a PDM based on Java/Swing including reporting
03 / 2007 to 09 / 2007
Tasks
  • Analysis of the existing legacy application code
  • Refactoring for homogenization and simplification
  • Implementation of the corresponding functionalities using Java and PL/SQL
  • Implementation of data analysis and reporting
Roles
  • Consultant
  • Application developer
  • Database developer
Skills
Windows, Java, Oracle, Apache Log4J, SQL Developer, Subversion, Delphi, Hibernate, Crystal Reports
Development of a rich client application for the creation and management of power plant schedules and related backend services
11 / 2007 to 02 / 2008
Tasks
  • Various extensions to the service client
  • Integration of the backend services
  • Implementation of service enhancements including corresponding changes to the data model
  • Provision of integration and unit tests
Roles
  • Application developer
  • Database developer
Skills
Windows, Java, Spring, JUnit, Oracle, Apache Log4J, Eclipse, Hibernate, UNIX
Design and development of a web service and corresponding client software for customer management
09 / 2007 to 11 / 2007
Tasks
  • Data modeling and database programming
  • WSDL concept
  • Implementation webservice
  • Collaboration in the implementation of Java client software
Roles
  • Database developer
  • Application developer
  • Consultant
Skills
Windows, Java, Linux, JUnit, Oracle, Apache Log4J, Apache Tomcat, Subversion, Mantis, SOAP, Apache Axis
Creation of an Eclipse RichClient application for testing of SOAP web services
11 / 2006 to 02 / 2007
Tasks
  • UI design and implementation
  • Implementation of a WSDL-based service connection
  • Implementation of WSDL validations
Roles
Application developer
Skills
Windows, Java, MySQL, Apache Log4J, Eclipse, Subversion, SOAP, Apache Axis, Hibernate
Extension and refactoring of an intranet application for recording and evaluating analysis data in hospital laboratories
03 / 2004 to 09 / 2005
Tasks
  • Refactoring of the existing source code
  • Implementation of patient and diagnostic data management
  • Implementation blood bank
  • Implementation HL7 interface
Roles
  • Web developer
  • Database developer
Skills
Windows, Java, JavaScript, Apache Log4J, JSP, Eclipse, Subversion, HL7, Sybase SQL Anywhere
Development of a web application for master data maintenance and customer connection as part of the conversion of the Mosaic clearing platform to J2EE technology
08 / 2003 to 11 / 2003
Tasks
  • Analysis of the existing C++ code
  • New implementation of service logic using Java/J2EE
  • Programming of PL/SQL modules
  • Creation of page templates using JSP
Roles
  • Application developer
  • Web developer
  • Database developer
Skills
Windows, Java, JavaScript, HTML, CSS, Oracle, JSP, Visual C++, Websphere Application Developer, CVS
Extension and bug fixing of the open source browser XSmiles (TU Helsinki) for form-based order processing as part of a customer project in the logistics environment
05 / 2003 to 08 / 2003
Tasks
  • Analysis of the existing browser application
  • Implementation of form processing and data transformations
Roles
Application developer
Skills
Windows, Java, JavaScript, HTML, CSS, XML, VB Script, Visual C++, XSL, Apache Xalan, Apache Xerces, CVS
Creation of a web application for the administration of customer and event data as well as accounting for a provider of further education courses in the field of taxes and finance
2002 to 2003
Tasks
  • Data modeling
  • Creation of page templates based on JSP
  • Programming of interface functionalities
  • Implementation of the application logic in close coordination with the customer
  • Delivery and system preparation
Roles
  • Database developer
  • Web developer
  • Consultant
  • Application developer
Skills
Java, JavaScript, Linux, HTML, Apache Log4J, JSP, Apache Tomcat, Eclipse, Subversion, PostgreSQL, Castor
Design and implementation of a provisional store to demonstrate available payment services to customers
in 2002
Tasks
  • Generation of a pool of anonymized test data
  • Creation of simplified websites for demonstration purposes
  • Provision of suitable service stubs
Roles
Web developer
Skills
Windows, HTML, Apache HTTP Server, Perl, Perforce
Implementation of various tools to support quality assurance staff during load and long-term tests
in 2002
Tasks
  • Conception of tools (e.g. XML generator etc.) in cooperation with the quality assurance department
  • Implementation of Windows applications according to agreements
  • Test and optimization
Roles
  • Software tester
  • Application developer
Skills
Windows, Java, Apache Log4J, XML, Eclipse, Perforce
Design and implementation of an intranet application for the evaluation of XML-formatted transfer protocols
in 2001
Tasks
  • Specification of the scope of functions in consultation with the specialist department
  • Data modeling and database programming to generate dynamic SQL
  • Creation of web interfaces for the configuration of predefined special search methods
  • Implementation of the application framework based on MVC architecture
  • Functional tests
Roles
  • Web developer
  • Database developer
  • Software tester
Skills
Windows, Java, Apache Log4J, JSP, XML, PL/SQL, Apache Tomcat, SQL Developer, Perforce
Extension and error correction of the services of a payment provider
in 2001
Tasks
  • Extension of the processing logic with multithreading capabilities
  • Elimination of resource leaks
Roles
Application developer
Skills
Windows, Linux, XML, Visual C++, MS Visual Studio, Perforce
Extension of measurement data software with user-defined calculation algorithms
2000 to 2001
Tasks
  • Extension of the existing application logic
  • Functional tests
Roles
  • Application developer
  • Software tester
Skills
Windows, Visual C++, MS Visual Studio
Development of a UI with integrated accounting for a fax retrieval system
in 2000
Tasks
  • Creation of a user interface using Perl/Tk
  • Data model extension
Roles
  • Application developer
  • Database developer
Skills
Windows, MySQL, Perl, C
Creation of a price ticker application for stock trading
in 2000
Tasks
  • Extension of the UI with sorting functionality
  • Improvements in the UI usability
  • Bugfixing
Roles
Application developer
Skills
Windows, Visual C++, MS Visual Studio
Migration of an MS-Access application for merchandise planning to MS SQL-Server as well as maintenance and further development of the resulting application
1999 to 2000
Tasks
  • Performance optimization
  • Improvement of the UI ease of use
  • Reporting functionality added
  • Fax interface connection
Roles
  • Database developer
  • Application developer
Skills
Windows, MS Access, MS SQL-Server, RightFax