• Further development and optimization of an import framework configurable via metadata
• Development of a generator for creating DDL and import definitions based on templates for the rapid integration of new sources or changes to sources
• Integration of several thousand sources (DBs, CSV, Rest-Apis) at high frequency (every half hour) using the import framework and Pentaho Data Integration (PDI)
• Development of a high-performance DWH based on Exasol
  Database administration incl. role-rights concept
• Development of database and data export for campaign management of several countries

• Reverse engineering of the old interface based on C# for the purpose of creating requirements documentation.
• Lean reimplementation based on Perl and Sqlite
• Easier configuration through YAML
• Faster adaptation to changes in business or technical requirements
• High robustness with low maintenance effort
• Extensions to the interface
• Change of output format from XML to CSV
• Adaptation of communication by choosing a new email provider
• Easily configurable, country-specific validation and formatting of customer data for offline mailing

Setting up a DWH in a Hadoop environment

• Requirements analysis
• ETL development with a Spark framework and Exasol
• Improvement of the provisioning processes
• Modeling with DataVault 2.0

• Creation of a database model to create the basis for the migration objects (Oracle)
• Development of integration processes for various sources (APIs, database)
• JSON objects for transfer via interface APIs (Python)
• a framework for high-performance and reliable data exchange via the APIs using threads and multiprocessors
• a metadatabase layer for monitoring the migration and for a restartable process chain
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