Welcome on the DDIM-Website of Stefan Ruebener
Stefan Ruebener
finance meets IT
Contact data
- Telefon Mobile
- +491722527414
Social networks
Personal data
- Date of birth
- 04.03.1967 (Age:58)
Short profile
Intro
With over 31 years in finance and IT, including 17 in finance sector interim management, my expertise spans ERP migration and controlling, particularly in SAP S/4 HANA and SAP R/3. I excel in merging financial operations with ERP system advancements, ensuring economic efficiency and operational effectiveness. My objective approach to group and site controlling optimizes processes and reporting systems. My IT passion complements my finance acumen, focusing on ERP integration that aligns with the organization's financial core. I am dedicated to fostering innovative solutions that enhance business resilience and efficiency, combining professional knowledge with a zeal for finance and technology.
Experience overview
- Experienced Financial Controller in finance and SAP S/4HANA FI/CO deployment.
- Proficient in financial migrations and process documentation with BPMN.
- Expert in database modeling and Microsoft tech implementations.
- Skilled in data integration, ETL processes, and reporting systems.
- Proven in developing budgeting, forecasting, and KPI frameworks.
- Accomplished in ERP training, support, and organizational change management.
- Versed in compliance with HGB, US-GAAP, and IFRS standards.
Tasks
- Consulting
- Business Development
- Cost Reduction
- Process Optimization
- Post Merger Integration
Functions
- Finance
- Information Technology
- Accounting & Controlling
Role in the company
- 2nd Level / Division Management / Department Management
- Program Manager
- Consultant, Advisor
Industry experience
- Chemistry
- Energy
- Trade
- Pharmaceutical Industry
- Real Estate Industry
Type of company
- Corporation / Group
- Medium-sized Enterprise
- Private-public Partnership
- Owner-managed / Family Business
Regions (Regions where you have proven experience)
- Germany
Languages
- German (Mother tongue)
- English (Business fluent)
IM projects (self employed)
12/2024 - Today Duration: 5 months
Interim Finance Transformation Manager
VDM Metals Group
VDM Metals Group
- City / place
- Werdohl
10/2020 - Today Duration: 55 months
Expert SAP S/4HANA FI/CO
Berner Omnichannel Trading Holding SE
Berner Omnichannel Trading Holding SE
- City / place
- Köln
03/2024 - 09/2024 Duration: 7 months
Head of Controlling
Kabel Premium Pulp & Paper
Kabel Premium Pulp & Paper
- City / place
- Hagen
08/2022 - 03/2024 Duration: 20 months
FI Expert for SAP System Conversion
Onyx Germany GmbH
Onyx Germany GmbH
- City / place
- Düsseldorf
04/2022 - 06/2022 Duration: 3 months
Controller SAP Customizer CO/PS/SD
Akkodis
Akkodis
- City / place
- Sindelfingen
02/2020 - 09/2020 Duration: 8 months
Group Controller
Erich Jaeger GmbH + Co. KG
Erich Jaeger GmbH + Co. KG
- City / place
- Friedberg
03/2019 - 02/2020 Duration: 12 months
Senior Controller
PharmaZell Group
PharmaZell Group
- City / place
- Rosenheim
12/2018 - 03/2019 Duration: 4 months
Site Controller
AkzoNobel
AkzoNobel
- City / place
- Hilden
05/2018 - 11/2018 Duration: 7 months
Consultant Global Quality / SC / Production Controlling
SIG Combibloc
SIG Combibloc
- City / place
- Linnich
06/2017 - 03/2018 Duration: 10 months
Cost Accounting Manager EMEA
Olin
Olin
- City / place
- Stade
08/2016 - 04/2017 Duration: 9 months
Site Controller
AkzoNobel
AkzoNobel
- City / place
- Hilden
09/2015 - 06/2016 Duration: 10 months
Controller
KLK EMMERICH GmbH
KLK EMMERICH GmbH
- City / place
- Düsseldorf
05/2015 - 09/2015 Duration: 5 months
Business Unit Controller
VION Food
VION Food
- City / place
- Landshut
03/2014 - 02/2015 Duration: 12 months
Financial Controller
Signa Real Estate Managment GmbH
Signa Real Estate Managment GmbH
- City / place
- München
Initial situation at the client
Financial Controller
05/2013 - 02/2014 Duration: 10 months
Financial Controller
Delphi Connection Systems Deutschland GmbH
Delphi Connection Systems Deutschland GmbH
- City / place
- Nürnberg
Initial situation at the client
Financial Controller
11/2012 - 02/2013 Duration: 4 months
Plant Controller
Gigaset AG
Gigaset AG
- City / place
- Bocholt
Initial situation at the client
Werkscontroller (Transitional Team – Restrukturierung)
08/2012 - 10/2012 Duration: 3 months
Business Unit Controller
InfraServ Gendorf GmbH
InfraServ Gendorf GmbH
- City / place
- Gendorf
Initial situation at the client
BU-Controller - IT-Services
11/2011 - 06/2012 Duration: 8 months
Performance Analyst - Working Capita
BP Europa SE
BP Europa SE
- City / place
- Bochum
Initial situation at the client
Performance Analyst:
Controlling Supply & Logistic
Working Capital
07/2011 - 11/2011 Duration: 5 months
Plant Controller
ISE Automotive Group GmbH
ISE Automotive Group GmbH
- City / place
- Witten
Initial situation at the client
Werks Controller
03/2011 - 06/2011 Duration: 4 months
Production Controller
NKT Cables GmbH
NKT Cables GmbH
- City / place
- Köln
Initial situation at the client
Produktion Controller
05/2010 - 01/2011 Duration: 9 months
Operation Controller
DSM Kunstharze GmbH
DSM Kunstharze GmbH
Company description
Chemical
- City / place
- Meppen
Initial situation at the client
Operation Controller
09/2009 - 04/2010 Duration: 8 months
Senior Consultant
BTC Europe GmbH (BASF SE)
BTC Europe GmbH (BASF SE)
Company description
Distribution Organization of BASF
- City / place
- Köln
Initial situation at the client
Senior Consultant - ERP
10/2007 - 08/2009 Duration: 23 months
Start-up Phase
Start-up Phase
Start-up Phase
Company description
Projects
- City / place
- NRW
Initial situation at the client
Projekt Management
Beratung und Projektleitung
Finanzbuchhaltung
Webdesign
Work history (permanent employment)
07/2007 - Today Duration: 214 months
Interim Manager
ruebener.net
ruebener.net
- City / place
- Germany
Remarks
see Interim assignments
see Interim assignments
03/2007 - 07/2007 Duration: 5 months
Commercial Manager
axelius automation GmbH
axelius automation GmbH
"Engineering and Technology Consulting
- City / place
- Lippstadt
Remarks
Commercial Manager
Commercial Manager
08/2005 - 02/2007 Duration: 19 months
Finance Analyst Systems
General Electrics - Capital Solutions GmbH & Co. KG.
General Electrics - Capital Solutions GmbH & Co. KG.
Mobile Leasing
- City / place
- Köln
Remarks
Finance Analyst Systems
Finance Analyst Systems
05/2000 - 06/2003 Duration: 38 months
Senior Manager Group Finance Applications
Bombardier Transportions
Bombardier Transportions
Vail Vehicle Manufacturer
- City / place
- Berlin
Remarks
Senior Manager Group Finance Applications
Senior Manager Group Finance Applications
10/2000 - 04/2000 Duration: -5 months
Senior Manager Group Finance Applications
DaimlerChrysler Rail Systems GmbH - ADtranz
DaimlerChrysler Rail Systems GmbH - ADtranz
Vail Vehicle Manufacturer
- City / place
- Berlin
Remarks
Senior Manager Group Finance Applications
Senior Manager Group Finance Applications
09/1996 - 09/2000 Duration: 49 months
European Finance Systems Manager
Kearney
Kearney
Management Consulting
- City / place
- Düsseldorf
Remarks
European Finance Systems Manager
International Financial Analyst - Emerging Markets & Europe
European Finance Systems Manager
International Financial Analyst - Emerging Markets & Europe
04/1993 - 08/1996 Duration: 41 months
Assistant Controller/Finance System Administrator
Boston Consulting Group
Boston Consulting Group
Management Consulting
- City / place
- Düsseldorf
Remarks
Assistant Controller
Finance System Administrator
Assistant Controller
Finance System Administrator
Education
07/1991
- 05/1993
Master of Business Administration
Rotterdam School of Management - Erasmus University
Rotterdam School of Management - Erasmus University
08/1988
- 01/1991
BA Economics
Boston College
Boston College
01/1988
- 06/1988
Political Science
Boston University
Boston University
08/1985
- 12/1987
Sociology / Economics
University of South Carolina
University of South Carolina