Senior BI Developer | ETL and Enterprise Data Warehouse Developer2019 - 2020Senacor Technologies, AG
Technologies: Linux, IBM Db2, Data Vaults, Ab Initio
- Developed the ETL pipelines with Ab Initio ETL software.
- Collaborated with a team of 40 to 50 consultants to build an enterprise data warehouse (EDW) for one of Germany's largest banks.
- Automated business processes with ETL software and Bash scripting for continuous integration and quality control.
BI Developer | Data Visualization Expert2016 - 2019BEONTRA, GmbH
- Built the BI front-end architecture, data visualization, and data modeling (star and snowflake schemas or dimensional models).
- Used R language to develop the prototypes for data mining components, such as data clustering and prediction models.
- Developed BI software based on Pentaho Suite, HP Vertica, and web technologies.
- Took part in the analysis of available data and bringing new ideas for the product.
- Created the visualization of financial data and data based on airport traffic forecasting and planning data.
- Collaborated with ETL developers to agree on the optimal data models.
- Monitored the BI market for the new modern BI platforms. Evaluated Power BI, Tableau, QlikView, and other BI and data visualization solutions.
Magento Developer | BI Developer2014 - 2016Flagbit, GmbH & Co. KG
- Conducted web development and provided IT support for eCommerce companies.
- Developed and supported Magento extensions for different Magento merchants.
- Developed a business intelligence platform for eCommerce projects.
Software Developer | IT Consultant2010 - 2013Consileon Business Consultancy, GmbH
Technologies: Oracle, Enterprise, Ext JS, PHP
- Managed deployment, software requirements analysis, second- and third-level IT support, and automatic and acceptance testing.
- Led project planning, control, requirements analysis, and team management.
- Developed an international pricing management system for a wide range of complex products.
- Built a customer management system (CRM) supporting the creation of offers for corporate customers. Integrated a price management system with Salesforce CRM.
- Developed a core back-end system for a premium car-sharing service startup, including the development of car-sharing web interfaces for internal users such as fleet managers and call center.
Web Developer2009 - 2010Freelance
- Developed an online taxi ordering system, including an RIA user interface and API integration.
- Built and implemented UI solutions with Ext JS library in different short-term projects.
- Developed custom Ext JS components for various clients.
PHP Developer2007 - 2009iTyre
- Assisted in the development of custom-built online shop ityre.com.
- Developed the customer relationship and retail management system with a large database of suppliers and products.
- Created a custom-built content management system (CMS) solution for the quick setup of online stores.