Volker Wiethaup - Senior SAP SD/EDI Consultant with ABAP

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Leverkusen, Germany

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Experience

Sep 2023 - Present

3 years 3 months

SD Project Member

Support for the SAP rollout for the sales companies in Germany: preparation of training materials, key-user training, testing, go-live and hypercare phases, as well as support activities
Industry: Building components
Software: SAP ERP 6.0

May 2023 - Jul 2023

3 months

SD - Salesforce Migration Project Member

Analysis and recommendations for optimizing an existing process for migrating contracts from SAP SD to Salesforce
Industry: Software
Software: EHP7 for SAP ERP 6.0

Apr 2023 - Nov 2023

8 months

SD – EDI Project Member

Development of new EDI interfaces to connect various customers for ORDERS / ORDRSP / DESADV
Industry: Medical technology
Software: SAP S/4HANA

Jan 2023 - Mar 2023

3 months

SD – OTC - EDI Project Member

Enhancement of an EDI interface between Salesforce <-> SAP PO <-> SAP ERP <-> ePayment Provider to implement a subscription model with various payment methods (VISA, MC, iDEAL, Direct Debit, etc.)
Industry: Building technology
Software: EHP6 for SAP ERP 6.0 with HANA DB

Jul 2021 - Dec 2022

1 year 6 months

SD Project Member

Analysis and optimization of existing billing processes, including their technical implementation in SAP SD
Support with the implementation of new billing processes (e.g. billing plans) in SAP SD at an investment company
Industry: Banking
Software: EHP6 for SAP ERP 6.0

Jan 2021 - Dec 2022

2 years

SD Project Member – OTC - EDI

Project support for Salesforce <-> SAP PO <-> SAP ERP as part of an S/4HANA implementation
Industry: Building technology
Software: EHP6 for SAP ERP 6.0 with HANA DB / SAP S/4HANA

Sep 2020 - Apr 2021

8 months

Project Manager

Project management and development of a concept to optimize invoicing processes across all invoicing-related systems at a securities bank (transaction bank)
Industry: Banking
Software: EHP7 for SAP ERP 6.0 and various in-house banking billing systems

Jun 2019 - Dec 2019

7 months

SD Project Member - OTC – EDI - IoT

Design and development of an EDI interface between the customer's own IoT cloud <-> SAP PO <-> SAP ERP, integrating an ePayment provider to process various payment methods across Europe (VISA, MC, AMEX, iDEAL, Direct Debit incl. BACS, Apple Pay, Google Pay, Alipay, etc.)
Industry: Building technology
Software: EHP6 for SAP ERP 6.0 with HANA DB

Jan 2019 - May 2019

5 months

SD Project Member - OTC - EDI

Preparations for the S/4HANA implementation project
Feasibility study for the new EDI interface between Salesforce <-> SAP PO <-> SAP ERP
Industry: Building technology
Software: EHP6 for SAP ERP 6.0 with HANA DB

Jul 2017 - Dec 2018

1 year 6 months

SD Project Member - OTC - EDI

Project support as part of the upgrade of SAP ERP from EHP6 to EHP8
Rebuild of the EDI order interface Salesforce <-> SAP ERP in preparation for the introduction of SAP COPA
Industry: Building technology
Software: EHP6 for SAP ERP 6.0 with HANA DB

May 2017 - Jun 2017

2 months

SD - OTC - EDI Project Member

Integration of an EDI interface for cash invoices from SAP ERP => SAP PI => KASSA24 (via REST-API) for legally compliant creation of duplicate receipts in accordance with the Austrian Cash Register Security Ordinance (RKSV)
Coordination with the SAP PI and KASSA24 teams
Industry: Building services
Software: EHP6 for SAP ERP 6.0 mit HANA DB

Mar 2016 - Apr 2017

1 year 2 months

SD - OTC – EDI Project Member

Project support for optimizing the EDI interface Salesforce <-> SAP PI <-> SAP ERP
Standardization and optimization of master data and document transfers
Industry: Building services
Software: EHP6 for SAP ERP 6.0 mit HANA DB

Sep 2015 - Feb 2016

6 months

SD - OTC - EDI Project Member

Project support for the SAP SD implementation in Russia
Migration of customer master data from Salesforce via talend and SAP PI to SAP ERP (EDI)
Industry: Building services
Software: EHP6 for SAP ERP 6.0 mit HANA DB

Jan 2015 - Dec 2022

8 years

SD Project Member

Production support and process optimization in the SAP logistics environment at an internationally active filter manufacturer
In particular, support for IT users with process questions and new requirements
Industry: Industrial textiles (filters)
Software: SAP ECC 6.0

Dec 2014 - Aug 2015

9 months

SD Project Member

Helpdesk, support, and project assistance within the Competence Center Support Team
Industry: Chemicals
Software: SAP ECC 6.0

Jun 2014 - Nov 2014

6 months

SD – MM - EDI Project Member

Subproject lead and test responsibility for connecting a new external logistics provider for finished goods shipping
Exchange of delivery and goods movement documents via ALE (EDI/IDoc/XML)
Industry: Pharma
Software: SAP ECC 6.0

Nov 2013 - May 2014

7 months

SD Project Member

SAP SD process optimization and production support
User support, hotline, ticket handling
Support for key users with process questions and new requirements
Industry: Chemicals
Software: SAP ECC 6.0

May 2013 - Oct 2013

6 months

SD and MM Project Member

SAP SD design and ABAP development to determine and pass on the country of origin in the batch process, from goods receipt in MM to goods issue in SD
Industry: Chemicals
Software: SAP ECC 6.0

Nov 2012 - Apr 2013

6 months

SD Project Member

SAP SD standardization of SAPscript forms (order / delivery / invoice / various certificates)
ABAP programming of print programs for sales organizations in Asia
Industry: Chemicals
Software: SAP ECC 6.0

Jan 2012 - Oct 2012

10 months

SD Project Member

SAP SD optimizations as part of a migration from SAP 4.6C to ECC 6.0
Testing of customer-specific processes and programs (user exits / enhancements / modifications), followed by ABAP program corrections
Development of new customer requirements
Industry: Financial services provider
Software: SAP ECC 6.0

Jun 2011 - Dec 2011

7 months

SD Project Lead

SAP SD at a securities bank (transaction bank)
SD module responsibility, including process optimization, production support and key user training
Industry: Banking
Software: SAP ECC 6.0

Jan 2011 - May 2011

5 months

Development Project Member

Prepared the concept and then supported ABAP programming for an interest analysis tool to show interest by cause (down to document level)
Industry: Banking
Software: SAP ECC 6.0

Jul 2010 - Sep 2014

4 years 3 months

SD Project Member

Production support and process optimization in SAP SD at a trading company
User support, hotline and ticket handling
Supported key users with process questions and new requirements
Industry: Trade
Software: SAP R/3 Enterprise

May 2010 - Dec 2010

8 months

CRM Project Member

Implemented SAP CRM 7.0 (SAP Ramp-Up)
Prepared the concept for migrating data from SAGE SalesLogix and a customer-specific CRM application (Lotus Notes) to SAP CRM
Industry: Banking
Software: SAP CRM 7.0

Jan 2010 - Apr 2010

4 months

SD Project Lead

Designed a company-wide SAP interface application, focusing on SD interfaces to be replaced
Event-driven checking and processing of files, and automated creation of SD orders after approval
Carried out all customizing activities
ABAP programming of various user exits for order creation, billing, and interfaces to FI and CO
Industry: Banking
Software: SAP ECC 6.0

Jun 2008 - Dec 2009

1 year 7 months

SD Project Lead

Production support and process optimization in SAP SD (with module responsibility) at a transaction bank
Industry: Banking
Software: SAP ECC 6.0

May 2008 - May 2008

1 month

CO Project Member

Implementation of revenue planning for the CO module based on SD actual and CO planned conditions
Industry: Banking
Software: SAP ECC 6.0

Oct 2007 - Apr 2008

7 months

SD Project Lead

Migration project for two production SAP systems at securities / transaction banks
Mapping of all processes and interfaces in a new sales organization in SD
Industry: Banking
Software: SAP ECC 6.0

Jun 2007 - Sep 2007

4 months

SD Project Lead

Further development of the SD module at a securities bank (transaction bank)
New pricing model and annual tiered prices using condition technique
Automatic creation of new orders via BAPI (ABAP programming)
Creation of new SAPscript forms
Industry: Banking
Software: SAP ECC 6.0

Jan 2007 - May 2007

5 months

SD Project Lead

Upgrade from SAP R/3 4.6C to SAP ECC 6.0 at a securities bank (transaction bank)
Industry: Banking
Software: SAP ECC 6.0

Jul 2004 - Dec 2006

2 years 6 months

SD Project Lead

SAP SD at a securities bank (transaction bank)
Process optimization, production support, and user support
Industry: Banking
Software: SAP R/3 4.6C and SAP R/3 Enterprise

Jan 2004 - Dec 2004

1 year

SD Project Team Member

Migration project involving two productive SAP systems
Set up the Sales Information System (VIS) as the basis for a shared SAP BW
Industry: Telecommunications
Software: SAP R/3 4.5B

Jul 2003 - Jun 2004

1 year

SD Subproject Lead

SAP merger project involving two securities banks (transaction banks)
Technical merger of the SD modules and development of shared processes to support a unified pricing model
Industry: Banking
Software: SAP R/3 4.6C

Jul 2002 - Jun 2003

1 year

SD Subproject Lead

Further development of the SD module at a securities bank (transaction bank)
Integration of various custom-developed subsystems to automate invoice creation using BAPI functionality (ABAP programming) and customizing
Industry: Banking
Software: SAP R/3 4.6C

Jan 2002 - Jun 2002

6 months

SD Subproject Lead

Implementation of the SD module to automate invoice creation for services at a securities bank (transaction bank)
Key user training and user training sessions
Industry: Banking
Software: SAP R/3 4.6C

May 2001 - Dec 2003

2 years 8 months

SD Project Team Member

Further development and maintenance of the SD module, as well as support for key users
Industry: Telecommunications
Software: SAP R/3 4.0B

Apr 2001 - Apr 2001

1 month

SD Project Team Member

Setup of a Sales Information System (VIS) and a Retail Information System (RIS)
Conducting user training
Industry: Retail
Software: SAP R/3 4.6C (R/3 Retail)

Mar 2001 - Sep 2001

7 months

BW Project Team Member

Setup of an SAP Business Information Warehouse Release 2.1C, 1st project phase: SD reporting
Industry: Telecommunications
Software: SAP R/3 4.0B / BW 2.1C

Jan 2001 - Dec 2001

1 year

SD Project Team Member

Enhancements to the SD module, including interfaces for setting up a sales portal to process eCommerce orders
Support for live operations
Industry: Banking
Software: SAP R/3 4.6C

Apr 2000 - Mar 2001

1 year

SD Project Team Member

Setup of a Sales Information System (VIS) as the basis for a data warehouse
Creation of various analytical reports
Ongoing support for key users during live operations
Industry: Telecommunications
Software: SAP R/3 4.0B / BW 2.1C

Feb 2000 - Apr 2001

1 year 3 months

SD Subproject Manager

Regular enhancements to the SD module as part of various eCommerce projects for processing online orders
Cross-module support for production operations
Project management in the SD area
Industry: Logistics
Software: SAP R/3 4.5B

Jan 2000 - Jan 2000

1 month

SD Project Member

Industry-specific customizing and SAPscript in the SD area for the further development of the IS-Automotive and IS-Retail modules
Industry: Software
Software: SAP R/3 4.0B

Jul 1999 - Dec 1999

6 months

SD Project Member

Set up a Sales Information System (VIS)
Industry: Furniture
Software: SAP R/3 4.0B (R/3 Wood)

Apr 1998 - Jun 1999

1 year 3 months

SD Subproject Manager

SAP R/3 implementation of the FI and SD modules in Italy
Project responsibility for SAPscript, Sales Information System (VIS), and all ABAP/4 reports
Industry: Chemicals
Software: SAP R/3 3.1H

Mar 1997 - Mar 1998

1 year 1 month

SAP SD Production Support

SAP R/3 SD module support
Industry: Chemicals
Software: SAP R/3 3.1G

Jun 1996 - Feb 1997

9 months

SAP Project Member

SAP R/3 custom development and customizing
Development of a customer-specific billing / bonus system
Industry: Chemicals
Software: SAP R/3 2.2F

Mar 1996 - May 1996

3 months

SAP Project Member

SAP R/3 SAPscript programming in Switzerland
Creation and modification of all SAPscript forms
Industry: Chemicals
Software: SAP R/3 2.2F

Feb 1996 - Feb 1996

1 month

SD Project Member

SAP R/3 SAPscript programming in Turkey
Modification of various SAPscript forms in SD
Industry: Chemicals
Software: SAP R/3 2.2F

Aug 1995 - Jan 1996

6 months

SD Project Member

SAP R/3 SAPscript programming in Germany
Creation and modification of all SAPscript forms, including ABAP programming of print programs
Industry: Chemicals
Software: SAP R/3 2.2F

Jun 1995 - Jul 1995

2 months

SD Project Member

SAP R/3 implementation study for the introduction of the SAP SD module
Industry: Industrial (Mining / Construction / Mechanical Engineering)
Software: SAP R/3 2.2F

Mar 1995 - May 1995

3 months

SAP Trainee

SAP training focused on the logistics modules, especially the SD module and ABAP programming
Industry: Software
Software: SAP R/3

Jan 1991 - Feb 1995

4 years 2 months

Application development in a mainframe environment

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Banking and Finance, Construction, Manufacturing, Chemical, Information Technology, and Telecommunication.

Banking and Finance

Construction

Manufacturing

Chemical

Information Technology

Telecommunication

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Supply Chain Management, Project Management, Sales, Logistics, and Customer Service.

Information Technology

Supply Chain Management

Project Management

Sales

Logistics

Customer Service

Summary

I have more than 25 years of international experience with SAP SD and EDI and have worked in various industries (e.g. banking, chemicals, building technology and medical technology). I have been involved in numerous rollouts, migrations and process optimizations and have consistently delivered effective solutions that improve system performance and the user experience.

Through my work with SAP ERP, ECC and, to some extent, S/4HANA, I have gained expertise in customizing, SD module support, training, support and interfaces. I focus on practical approaches that simplify complex processes while ensuring smooth support and training for key users. My background in both technical development and project management helps me drive continuous improvements in different environments.

I look forward to a personal conversation where we can discuss how I can support you with your project.

Skills

Business Consulting
Sap Sd Consulting
Edi / Idoc / Ale / Interfaces Sap <=> Salesforce
Consulting / Project Management / Organization / Coordination
Software Development / Abap Programming
Instruction / Training (Users / Key Users)
Testing / Documentation / Quality Assurance
Administration / Support
Sap R/3
Sap Ecc 6.0 With Hana Db
Sap S/4hana
Sd Consulting / Customizing
Sd Module Support (Otc)
Logistics Information Systems (Lis/Vis/Ris)
Abap/4 - Programming
Sapscript
Edi / Idoc / Ale / Sap Pi/Po
Realtech Transport Manager
Salesforce
Project Management
International Experience (It / Ch / Tr / Gb / Nl / Be)
Specification Writing / Testing Experience
Training / Documentation / Support / Helpdesk
Ms Office / Confluence / Jira / Servicenow / Kanban

Languages

German

Native

English

Advanced

Dutch

Elementary

Education

Bergische Universität Wuppertal

Diplom Ökonom · Business Administration

Certifications & licenses

SAP R/3 Business Information Warehouse

SAP AG

Introduction To Successful Remote Teamwork

openHPI

Sketching Basics For It Business

openSAP

The Internet Of Things With SAP

openSAP

Touch Iot With SAP Leonardo

openSAP

Understanding Sap Fiori Launchpad

openSAP

Statistics

Experience

Total positions 52

Experience in Banking and Finance 14 y

Avg length 1 y

Longest experience 7 y 11 m

Expertise

Recent roles SD Project Member, SD - Salesforce Migration Project Member, SD – EDI Project Member

Main industries Banking and Finance, Construction, Manufacturing

Main business areas Information Technology, Supply Chain Management, Project Management

Qualifications

Certifications earned 7

Member since

February 2026

Last update

November 2026

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Frequently asked questions

Have questions? Find more information here.

Volker is based in Leverkusen, Germany and can operate in on-site, hybrid, and remote work models.

Volker speaks the following languages: German (Native), English (Advanced), Dutch (Elementary).

Volker has at least 36 years of experience. During this time, Volker has worked in at least 24 different roles. The average length of individual experience is 1 year and 8 months. Note that Volker may not have shared all experience and actually has more experience.

Based on recent experience, Volker would be well-suited for roles such as: SD Project Member, SD - Salesforce Migration Project Member, SD – EDI Project Member.

Volker's most recent position is SD Project Member.

Volker is most experienced in industries like Banking and Finance, Construction, and Manufacturing. Volker also has some experience in Chemical, Telecommunication, and Information Technology.

Volker is most experienced in business areas like Information Technology, Supply Chain Management, and Project Management. Volker also has some experience in Logistics, Sales, and Customer Service.

Volker has recently worked in industries like Manufacturing, Construction, and Banking and Finance.

Volker has recently worked in business areas like Information Technology, Supply Chain Management, and Logistics.

Volker attended Bergische Universität Wuppertal for Business Administration.

Volker has 7 certificates. Among them, these include: Kanban University Team Kanban Practitioner, SAP R/3 Business Information Warehouse, and Introduction To Successful Remote Teamwork.

Volker is immediately available part-time for suitable projects.

Daily rate distribution

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<€720 €720-800 €800-880 €960+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Average rates for similar positions

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Daily rate avg. 828 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

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Median rate 812 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 7 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.