Christian Rettig
Managing Director
More than 20 years of SAP project experience, above all in project steering and process consulting. Currently leads an engagement for SAP Transportation Management covering the transport planning and transport execution topics, and has passed the SAP certification for SAP Transportation Management. Further focus areas are S/4HANA transformations, SAP logistics (MM, SD, EWM), and cut-over and test management.
Profile on LinkedInAt a glance
SAP experience since
2003
Professional qualification
Diplom in Business Informatics (German university degree)
Languages
German (native), English (fluent)
Industries
Wholesale, Retail, Chemicals, Manufacturing, Metals
Areas of focus
- Project management, sub-project management
- Organisational and application consulting for S/4HANA
- SAP transformation consulting
- SAP / S/4HANA implementation consulting
- SAP logistics, MM, SD
- SAP TM and EWM integration
- Design of data migration concepts from legacy systems
- Cut-over and test management
- Process optimisation & reengineering
Project history
A summary of selected projects. The entries from December 2015 onwards are engagements of 4Trust Consulting GmbH; the earlier ones date from before it was founded. Engagements that extend beyond December 2015 were continued by the company from its founding onwards. The designations in front name the role in the respective project. The company’s engagements were external consulting services on a project basis throughout, not positions in the client’s organisation – as a rule as one of several service providers in a larger programme.
since 12/2024
Wholesale
Lead Consultant – SAP Transportation Management
SAP consulting on transport planning and transport execution in the SAP Transportation Management system of a supra-regional wholesale company.
07/2019 – 12/2024
Retail
Senior Project Manager – One product category in a global S/4HANA transformation
Migration, cut-over and test management as well as SAP consulting for the processes of one product category as part of a global S/4HANA transformation in five countries on three continents – from process design to system integration.
09/2018 – 06/2019
Wholesale
Senior Consultant – Complaints and returns in a Europe-wide S/4HANA implementation
SAP consulting on complaints and returns processes (MM/SD) as part of a Europe-wide SAP S/4HANA implementation – from design through to system implementation.
08/2018 – 06/2019
Retail
Senior Project Manager – Sales, EWM and TM in an SAP ERP implementation
Support with project management and SAP consulting within an SAP ERP implementation – focus areas: SD model sales processes and the integration of SAP EWM and SAP TM.
07/2015 – 12/2018
Retail
Lead Consultant – Non-food returns and SAP TM integration
Design and implementation of non-food returns and SAP TM integration, with system implementation in four countries in Europe and North America.
07/2012 – 06/2015
Chemicals
Senior Consultant – Further development of SAP MM, PP, QM and SD
Further development of SAP MM and the adjacent modules PP, QM and SD – with a focus on procurement, output management and interface configuration.
05/2008 – 06/2012
Chemicals
Senior Consultant
Worldwide system support for the SAP MM module (2nd/3rd level support), supporting global change management processes via SAP Solution Manager.
04/2007 – 04/2008
IT services
Senior Consultant
FI/CO consulting on financial accounting and controlling, development of a Lotus Notes application for maintaining CO master data with SAP connectivity.
02/2007 – 04/2007
Logistics
Senior Consultant
MM/SD consulting as part of an SAP migration, application consulting, and customizing.
10/2003 – 12/2006
Steel & Retail
Consultant
Various SAP-related projects in the logistics domain.