Wolf Preuster-Drews - POS Compliance Manager for SAP

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Endingen, Switzerland

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Experience

Nov 2024 - Jan 2025

3 months

Niedernberg, Germany

Interim Head of IT-POS Base GK - SAP

Depot GDC

Interim management of IT-POS based on GK and SAP for DEPOT GDC.
Responsibility for the stability and further development of the POS base platform.
Management of adaptations and rollouts in the POS environment in coordination with the SAP backend.

Mar 2024 - Aug 2024

6 months

Basel, Switzerland

IT SOX Compliance Analysis

Valora AG

Conducted an IT SOX Compliance Analysis for the DACH region in cooperation with KPMG.
Analyzed and evaluated petrol station systems and POS ERP structures.
Reviewed the implementation of the Supply Chain Due Diligence Act in the IT and ERP environment.
Evaluated and optimized GDPR/DSGVO compliance in processes and systems.
Analyzed SOX compliance requirements, including card processing processes.
Conducted various smaller consulting projects on petrol station systems, POS ERP, the Supply Chain Due Diligence Act, DSGVO/GDPR, SOX Compliance and Card Processing.

Jan 2023 - Aug 2025

2 years 8 months

Press Officer

ReEnCo AG

Planned and organized non-profit events with ReEnCo AG.
Built and maintained networks with universities and professional committees.
Represented the company as Press Officer to relevant stakeholders.

Feb 2020 - Jun 2023

3 years 5 months

Sales Representative DACH Region

Strixtec

Sold the "Situational Awareness Solution" in the DACH region.
Sold the "NowForce" solution in the area of Physical Security and incident management.
Provided consulting on Physical Security solutions for Kühne & Nagel in Colombia.
Project management in the Transport and Logistics sector, focusing on security and monitoring solutions.

Aug 2018 - Dec 2019

1 year 5 months

Syenap

Built the Syenap Competence Center Europe for Video Analytics in the retail, mall, banking and casino sectors.
Designed and planned a pilot installation for a large, internationally active European retail group.
Recorded the current situation in pilot stores regarding camera locations and lighting conditions.
Designed a queue management system to reduce waiting times using real-time forecasts.
Used in-store tracking to improve customer services and optimize product ranges.
Supported an increase in the conversion rate through data-based analysis of customer behavior.

Apr 2015 - Aug 2018

3 years 5 months

Salzburg, Austria

SPAR AG / ICS

Service management for frontend systems and middleware, including EAI, SAP and card processing.
IT controlling in relation to legal requirements and cost accounting.
Interface communication with development and finance departments to align requirements and budgets.
Process engineering for checkout and back-office processes across all SPAR sales categories.
End-user support for changes to process workflows in the store and back-office environments.
Participation in introducing DSGVO/GDPR and supply chain due diligence requirements into the IT and POS landscape.

Apr 2014 - Oct 2014

7 months

Cologne, Germany

Rewe / Toom Deutschland

Integration of Micros' (Graz) DEBIS POS software into SAP.
Development of concepts and interface design for data exchange between SAP and checkout software.
Design of interfaces between SAP and frontend software for data uploads and downloads.
Modeling of interface structures.
Creation of program specifications for SAP systems and store systems.
Testing and quality assurance of the interface solutions for uploads and downloads developed by SAP.
Management and creation of test scripts.
Execution of practical testing and error management.
Ensuring compliance with the legal requirements of the Federal Ministry of Finance.
Process review and quality management.
Coordination of the various software suppliers.

Mar 2012 - Dec 2014

2 years 10 months

Belgrade, Serbia

SMF KG / SMF d.o.o. / uniCODE / OMV

Localization of "The Retail Suite" by Itim Ltd. for use in the OMV retail environment.
Development of fiscal requirements for new checkout systems at OMV.
Close cooperation with the client OMV and the software supplier uniCODE.
Analysis of Serbian fiscal legislation and description of the processes for fiscal printers and POS systems.
Change request management as part of the software implementation.
Support of software development on site at the client and supplier.
Testing, quality assurance and support during the commissioning of the new systems.

Mar 2012 - Jul 2012

5 months

Deutsche BP / TSG

Participation in the introduction of "NCTT Next Generation" for card processing.
Establishment of a central SAP server for card parameters and technical upload and download processes.
Central provision of operating parameters for payment terminals across Europe.
Standardization of maintenance processes for payment terminals in Europe.
Design of central reconciliation processes, including plausibility checks and correction processes.

Mar 2010 - Aug 2014

4 years 6 months

Bauhaus

Support of the German DIY chain Bauhaus's market entry into the Balkans with regard to POS systems.
POS and retail consulting for new locations and markets.
Preparation and execution of the fiscalization of affected hardware such as printers, checkouts and software.
Support of the checkout system manufacturer and the DIY chain during the POS rollout and market entry.
Deployment and quality assurance of the LUKAS and OSCAR checkout systems from Torex/Micros.
Implementation of a 1st-, 2nd- and 3rd-level support organization for POS systems.
Testing and quality assurance of all POS systems in use.

Mar 2010 - Jul 2012

2 years 5 months

Bonn, Germany

Autobahn Tank & Rast

POS consolidation as well as modernization and standardization of POS processes for cooperating oil companies.
Analysis of existing POS systems in the filling station and motorway service area environment.
Quality assurance of POS systems from various manufacturers, e.g. Scheidt & Bachmann and Huth.
Analysis and optimization of card processing processes.
Creation of concepts and documentation for new POS and payment processes.
Error analysis and data cleanup.

Nov 2009 - Feb 2010

4 months

Elmshorn, Germany

Deutsche Tamoil

Quality assurance of retail systems in the filling station environment.
Creation of a cash register system test checklist for the customer's internal change request process.
Standardized testing of cash register functionalities after software changes by the manufacturer (Huth).
Consideration of all connected satellite systems such as merchandise management systems, pricing systems, databases and payment systems.
Ensuring investment security through structured testing and documentation.

Oct 2008 - Dec 2014

6 years 3 months

Vienna, Austria

OMV

Connecting revenue and expense data from filling station and POS systems by Scheidt & Bachmann to EURODATA (Tax Management).
Rollout management for new POS and backend solutions in the oil and retail environment.
Introduction of web-based conference systems, including training management.
Quality control of frontend systems with review of supplier documentation (database model, UML diagrams, Programmer's Guide, etc.).
Support for ESCROW procedures, assisting the legal department and project management with audits of the ESCROW provider and software suppliers.
Creation and review of QA contract documents.
GAP analysis for the renewal of the software and hardware infrastructure in the Republic of Serbia.
Creation of a business blueprint for software development and review of local maintenance partners in Serbia.
Evaluation of peripheral devices in the POS environment.
Analysis of the POS fiscalization requirements of the Republic of Serbia, including legal analysis and workflow development at the POS.
Analysis of new data protection regulations and implementation of the corresponding workflows.
Quality assurance of cash register and payment functionalities as well as system- and infrastructure-related processes and functions.
Support with the rollout and commissioning of strategic filling stations.
Design of user workshops to define clear GAP requirements for the software supplier.
Card processing, including fleet card management.

Industry experience

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

Experienced in Retail, Energy, Information Technology, Transportation, Professional Services, and Banking and Finance.

Retail

Energy

Information Technology

Transportation

Professional Services

Banking and Finance

Business area experience

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

Experienced in Information Technology, Project Management, Quality Assurance, Operations, Sales, and Finance.

Information Technology

Project Management

Quality Assurance

Operations

Sales

Finance

Summary

I have built my career by tackling complex IT and POS challenges, overseeing SAP integrations and ensuring smooth, compliant operations in retail, oil, and security industries. I have managed the stability and evolution of POS platforms, executed IT compliance analyses, and supported software rollouts across various regions.

I offer a deep technical background combined with practical sales and operational expertise. I focus on quality assurance, process optimization, and data-driven decision-making, ensuring that every project I lead delivers measurable value and long-term reliability.

Skills

Business Economist, It Controller
Internationally Experienced Specialist In Pos Systems, Central And Decentralized Merchandise Management And Retail Processes
Project-Management
Crm
Quality Management
Audit Compliance
Rollout-Management
Physical Security & Safety Solutions
Nis2
Kritis
Iso 27001
International Sales- And Account Management
Pos, Erp, Security Solutions, Footfall Analysis, Risk Management
It Experience Since 1979
Available At Short Notice By Arrangement

Security Solutions Intellicene/Viisights/Verint/Cognyte

Preparation And Integration Of Ai Solutions For Safety & Security
Consulting In Cooperation With Universities Of Applied Sciences
Project Management – Definition And Introduction Of Use Cases For Transport & Logistics
Definition Of Use Cases For Security & Safety In Transport & Logistics
Safe Campus
Safe City
Safe Agriculture - Farms
Deployment Planning Rollout
Face Recognition – Video Analysis With Ai
Plate Recognition – Link To A Workflow Table
Perimeter Security With Ai
Soc – Service Operation Center – Situational Awareness
Iot Security
Cyber Security

Retail Focus Areas

Discount Retail, C&C Markets, Department Stores, Specialist Retail (Fashion, Books, Electronics), Hospitality
Central And Decentralized Merchandise Management Systems, Various Pos Systems, Petrol Station Systems, Card Processing / Payment Systems
Fiscalization In All Affected European Countries, Escrow
Forecourt Controller, Nct (Non Cash Transactions)
Quality Management, Project Management, Rollout Management
Support For Integration Projects Between Sap And Pos Systems (Oil Industry), With Detailed Knowledge Of Erp Processes As The Interface To The Pos Side
Gdpr/Dsgvo – Implementation And Validation
Big Data Customer Footfall Analysis
Central Cash Management
Introduction Of Sox Compliance For Pos
Supply Chain Due Diligence Act And Risk Management It & Business Continuity, Kritis
Retail Digitalization
Omnichannel Gk Software

Operating Systems, Db/Dc Systems, Tools

Sql
Windows
Access
Dp4 All Tools
Unifiedpos
Pos For .Net
Uml
Arts
Ifsf-Interfaces Incl. Card Processing
Sap Retail Interfaces
Bpmn 2.0
Confluence
Jira

It Sox Compliance Analysis

Middleware
Host
End User Application
Card Processing

Industry Expertise

Retail (Discount, Department Stores, Specialist Retail, C&C, Hospitality)
Mineral Oil Trade
Fashion (E.G. Pkz ZüRich, Palmers Wiener Neustadt, Collection Software Hechingen, Laura Ashley, Karstadt And Galeria)
Bertelsmann Book Club
Tank & Rast
Omv
Spar
Bauhaus
Toom
Denner
Coop

Languages

German

Native

English

Advanced

Education

Business economist

IT controller

Certifications & licenses

ISO 27001

Statistics

Experience

Total positions 13

Experience in Retail 11.5 y

Avg length 2 y 2 m

Longest experience 6 y 2 m

Global experience

Countries worked in 4 (Germany, Austria, Switzerland, Serbia)

Primary country Germany

Expertise

Recent roles Interim Head of IT-POS Base GK - SAP, IT SOX Compliance Analysis, Press Officer

Main industries Retail, Energy, Information Technology

Main business areas Information Technology, Project Management, Quality Assurance

Qualifications

Certifications earned 1

Member since

August 2025

Last update

November 2026

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Frequently asked questions

Have questions? Find more information here.

Wolf is based in Endingen, Switzerland and can operate in on-site, hybrid, and remote work models.

Wolf speaks the following languages: German (Native), English (Advanced).

Wolf has at least 16 years of experience. During this time, Wolf has worked in at least 4 different roles and for 13 different companies. The average length of individual experience is 1 year and 3 months. Note that Wolf may not have shared all experience and actually has more experience.

Based on recent experience, Wolf would be well-suited for roles such as: Interim Head of IT-POS Base GK - SAP, IT SOX Compliance Analysis, Press Officer.

Wolf's most recent position is Interim Head of IT-POS Base GK - SAP at Depot GDC.

In recent years, Wolf has worked for Depot GDC, Valora AG, ReEnCo AG, and Strixtec.

Wolf is most experienced in industries like Retail, Energy, and Information Technology. Wolf also has some experience in Transportation, Professional Services, and Banking and Finance.

Wolf is most experienced in business areas like Information Technology, Project Management, and Quality Assurance. Wolf also has some experience in Operations, Sales, and Finance.

Wolf has recently worked in industries like Information Technology, Transportation, and Professional Services.

Wolf has recently worked in business areas like Project Management, Sales, and Marketing.

Wolf attended education in Business economist.

Wolf has 1 certificate: ISO 27001.

Wolf is immediately available full-time for suitable projects.

Daily rate distribution

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<€480 €480-640 €640-800 €800-960 €960-1120 €1120+

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Average rates for similar positions

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Daily rate avg. 885 €

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Median rate 940 €

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.