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Gert Harren

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Available to hire

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Language

German
Fluent
English
Advanced

Work Experience

DB-Consultant at Ifolor AG
April 1, 2018 - November 22, 2025
Consulting, design, development and testing of data flows, reports and data science, integrating data from various sources (Power BI, TimeXtender, BigEval, BigQuery, Azure).
Founder at Steinsaeulen.ch (IZIMPA GmbH) / GOVIMI
July 1, 2019 - July 1, 2019
Online sales of individual nutritional supplements; Marketing, design, software development, production, sales and legal aspects (WordPress, Google Analytics, WooCommerce, Google Ads, Facebook Ads).
Director eCommerce & IT at Hepart AG Kreuzlingen
June 1, 2017 - June 1, 2017
6 employees in 2 teams; Coordination and consolidation of 10 websites, 4 online shops and backoffice systems; IT-Architecture, system and process redesign, standardisation and outsourcing; Reporting to CEO (Magento, Wordpress, Woocommerce, APEX, Oracle, MS SQL Server).
Head of Analytics & Data Management (Interim) at Breuninger GmbH
August 1, 2016 - August 1, 2016
Strategy consulting and team lead analytics, reporting and datascience; 3 employees & 3 student assistants; Reporting to Executive Director (QlikView).
Founder at IZIMPA GmbH
November 1, 2015 - November 22, 2025
Founding IZIMPA GmbH.
Head of BI & Data Management at HolidayCheck AG
June 1, 2015 - June 1, 2015
Leading BI & Data Management department; 10 employees & 15 student assistants, 2 teams in Switzerland and Poland; Leading, planning and coordinating group-wide projects and processes like recommendation engines, email marketing, automatisation of master- and transaction-data-processes; Involvement in operative daily business; Reporting to CEO & CTO (QlikView, MS SQL Server, MySQL, MS SSIS, KNIME).
Teamlead Senior Data Analyst – Product Management at HolidayCheck AG
May 1, 2012 - May 1, 2012
Staffing and developing Team Data; DWH, reporting, data-mining-processes.
Marketing Manager Customer Insights at HolidayCheck AG
March 1, 2011 - March 1, 2011
Marketing knowledge building and strategic use of customer data; implementation data warehouse, data-mining.
Dialogmarketing Database Management at TeamBank AG Nürnberg
September 1, 2010 - September 1, 2010
Setting-up and developing database marketing, advertising effectiveness controlling and address management.
Privacy-compliant Marketing Data Warehouse at Teambank Austria
September 1, 2010 - September 1, 2010
Conception and implementation of a privacy-compliant marketing data warehouse (Oracle, PL/SQL).
Consultant, Database Marketing Management & Services at Quelle GmbH
February 1, 2009 - February 1, 2009
Databasing Marketing Management & Services; Datamining; Development of scorecards, evaluations and analyses; Designing, implementing and maintaining reports; Data warehouse (ETL and data quality) (Oracle, SAS).
Project Lead Database Marketing at Quelle GmbH
February 1, 2009 - February 1, 2009
Datamining; Development of scorecards, evaluations and analyses; Implementing and maintaining reports; Data warehouse management.
Student assistant at Institut für Marketing Münster
June 1, 2005 - June 1, 2005
Support in marketing research; DWH and data-related tasks.
IT Soldier at Military Service
June 1, 2000 - June 1, 2000
Basic IT training during mandatory service.

Education

Diplom Wirtschaftsinformatik (Information Systems) at Westfälische Wilhelms-Universität Münster
October 1, 2000 - October 1, 2006
Abitur at Kopernikus-Gymnasium Rheine
August 1, 1990 - July 1, 1999
14th Chinese Business Program at Ocean University of China, Qingdao
March 1, 2004 - June 1, 2004
Basic military service – IT-soldier at Military
October 1, 1999 - June 1, 2000
Certified Scrum Product Owner – agile product development at Tomorrow Focus AG
August 1, 2012 - December 1, 2012
3x3 leadership training at Tomorrow Focus AG
June 1, 2012 - December 1, 2012
Management Learning Program 4 at Primondo
September 1, 2008 - March 1, 2009

Qualifications

Change Management – Seminar
July 1, 2013 - November 22, 2025
Change Management – Seminar
July 1, 2013 - November 22, 2025
Certified Scrum Product Owner – agile product development
August 1, 2012 - December 1, 2012
3x3 leadership training
June 1, 2012 - December 1, 2012
Management Learning Program
September 1, 2008 - March 1, 2009

Industry Experience

Software & Internet, Professional Services, Retail