Benjamin Wennmacher - SAP Basis & Cloud Transformation Consultant

Q: Where is Benjamin based?

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

Q: What languages does Benjamin speak?

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

Q: How many years of experience does Benjamin have?

Benjamin has at least 15 years of experience. During this time, Benjamin has worked in at least 18 different roles and for 30 different companies . The average length of individual experience is 1 year and 6 months . Note that Benjamin may not have shared all experience and actually has more experience.

Q: What is Benjamin's latest experience?

Benjamin's most recent position is SAP Basis at IT Baden-Württemberg (BITBW) .

Q: What companies has Benjamin worked for in recent years?

In recent years, Benjamin has worked for IT Baden-Württemberg (BITBW) , GIZ – German Corporation for International Cooperation , q.beyond – various end customers , q.beyond – Alliance Healthcare Deutschland GmbH , and q.beyond – Tchibo .

Q: Which industries is Benjamin most experienced in?

Benjamin is most experienced in industries like Information Technology , Manufacturing , and Government and Administration . Benjamin also has some experience in Energy , Metals and Mining , and Utilities .

Q: Which business areas is Benjamin most experienced in?

Benjamin is most experienced in business areas like Information Technology , Project Management , and Operations . Benjamin also has some experience in Strategy , Business Intelligence , and Quality Assurance .

Q: Which industries has Benjamin worked in recently?

Benjamin has recently worked in industries like Manufacturing , Information Technology , and Government and Administration .

Q: Which business areas has Benjamin worked in recently?

Benjamin has recently worked in business areas like Information Technology , Operations , and Project Management .

Recommended expert

Ratingen, Germany

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Experience

Nov 2025 - Present

9 months

Remote

SAP Basis

IT Baden-Württemberg (BITBW)

SAP Basis operations for complex SAP system landscapes (ABAP and Java stacks)
Administration, monitoring, and optimization of SAP systems with regard to availability, performance, and stability
Planning and execution of data center moves as well as migrations of SAP systems and databases
Handling of incidents, changes, and problems according to ITIL processes, including root cause analyses
Creation of technical concepts, operations documentation, and implementation plans

Technologies: SAP NetWeaver, ITIL processes, technical migrations

Mar 2025 - Aug 2025

6 months

SAP Basis / Enterprise Architecture

GIZ – German Corporation for International Cooperation

Migration from R/3 to S/4HANA, including a concept for retaining legacy data in existing SAP systems
Containerization and virtualization of SAP systems in read-only / archive operation
Creation of technical solution documents for a new archive system
Architecture governance and target architectures; evaluation of integration scenarios including .NET/C# applications
SAP BTP, Clean Core, and cloud transformation; EAM-/LeanIX-style documentation of applications and interfaces
Agile project work in SCRUM-/SAFe-like environments with stakeholder and management communication

Technologies: S/4HANA, SAP BTP, Clean Core, LeanIX/EAM, SCRUM/SAFe

Jan 2024 - Dec 2025

2 years

IT Specialist SAP Basis

q.beyond – various end customers

SAP Basis support for various end customers, including SAP RISE migrations (greenfield/brownfield) and PEC/HEC customers (private & public cloud)
Strategic pre-study for ERP platform selection (SAP Business One vs. S/4HANA), including architecture comparison, effort estimate, and decision-ready management proposal
Role as SAP Lead Architect / Principal Consultant with responsibility for architecture design, end-to-end process integration, and scalable target architecture
SAP Cloud ALM, SAP Cloud Connector, Clean Core, SAP BTP, health and event monitoring of the application landscape
Transport and software lifecycle management, S/4HANA housekeeping, system/client copies
FIORI launchpad activation & configuration (App Library, OData services, ICF nodes, authorizations)

Technologies: RISE with SAP, SAP BTP, Cloud ALM, FIORI, SNOW/JIRA

Jan 2024 - Sep 2024

9 months

IT Specialist SAP Basis

q.beyond – Alliance Healthcare Deutschland GmbH

SAP S/4HANA greenfield migration, including support for the data migration concept and plan, as well as corrections during the hypercare phase
SAP Solution Manager 7.2: ChaRM, Focused Build, solution readiness dashboard, test management
SAP Multi-Bank Connectivity: configuration of connectivity, mTLS authentication, pull/routing settings, EBICS 2.x/3.0
Patch and client copy management

Technologies: S/4HANA greenfield, SAP Multi-Bank Connectivity, Solution Manager 7.2

Oct 2023 - Sep 2024

1 year

IT Specialist SAP Basis

q.beyond – Tchibo

SAP Private Cloud (Diagnostics, Reporting & Analytics, ECS workspace, service requests) for S/4HANA and BW4HANA
Kernel patches, security notes, patch and lifecycle management, system copies
Change and incident management (SNOW, JIRA)
RISE with SAP: consulting on cloud transformation, architecture decisions (private vs. public cloud), license models
Greenfield setup of new S/4HANA systems including process redesign; introduction of SAP Cloud ALM
Clean-core consulting to standardize and reduce customer-specific developments based on SAP BTP

Technologies: SAP Private Cloud, RISE with SAP, Cloud ALM, Clean Core, BW4HANA

May 2023 - Aug 2023

4 months

IT specialist SAP Basis / technical project manager

Bahlsen GmbH & Co. KG

Archive migration from FileNet to xSuite incl. a technical solution document for the new archive system
Archive customizing in the S/4HANA system (OAC0, OAA0, OAC3) and certificate management
Project management, test management, as well as go-live support and hypercare

Technologies: SAP NetWeaver 7.5, SAP HANA, S/4HANA on RHEL

Mar 2022 - Present

4 years 5 months

IT specialist SAP Basis / technical project manager SAP migration

Rhein-Main-Rohrleitungstransportgesellschaft (RMR)

Operating system change Windows Server 2008 R2 → 2019; Unicode conversion of a 3-system landscape
Oracle upgrade 12.1 → 19c as well as EHP upgrade ERP 6.0 EHP0 → EHP8
SAP Solution Manager 7.2 (ABAP/Java installation, SLD/LMDB, Diagnostics Agent, EarlyWatch, Monitoring)
Lead of a strategic pre-study for ERP platform selection (SAP Business One vs. S/4HANA) incl. architecture comparison, process analysis (FI/CO, SD) and investment decision basis as SAP Lead Architect
RISE & GROW with SAP: consulting on cloud transformation, architecture decisions and license models
Greenfield/Brownfield/Hybrid transformation approaches; introduction of SAP Cloud ALM and SAP BTP

Technologies: SAP NetWeaver 7.50, Oracle 19c, RISE/GROW with SAP, Cloud ALM, SAP BTP

Feb 2022 - Present

4 years 6 months

IT specialist SAP Basis / project manager

EP Power Minerals

Monitoring/EarlyWatch alert, request fulfillment as well as maintenance of operation manuals and authorization concepts
Setup, configuration and operation of SAP HANA 2.0 database systems incl. user and role management
Installation of SAP Solution Manager 7.2 (ABAP & Java), SLD/LMDB, Diagnostics Agent, Introscope, EarlyWatch, Monitoring & Alerting
Design and consulting for a Sybase HA scenario; server administration RHEL 8.5
SAP BTP development/integration, SAP Analytics Cloud (reporting/planning) and SAP Signavio (process analysis)
Enterprise architecture: architecture governance, LeanIX-style documentation, agile project work (SCRUM/SAFe)
Carve-out projects, archive system migration as well as private/public cloud and clean core consulting

Technologies: SAP HANA 2.0, Solution Manager 7.2, SAP BTP, SAC, Signavio, RHEL 8.5

Aug 2021 - Dec 2021

5 months

SAP system administrator

Spirit/21 GmbH

Patch, transport and system copy management as well as SAP Security Notes/kernel patches
Installation and administration of HANA Cockpit 2.0, HANA user management and design-time roles
Change and incident management as well as maintenance of operation manuals

Technologies: SAP NetWeaver 7.0x–7.5x, S/4HANA 1709/1809, BW4HANA, SLES12/15, AIX

Mar 2020 - Dec 2024

4 years 10 months

SAP Basis consultant

ITZ Bund

Patch, support package and transport management, Unicode migration, client copies
SAP user management and authorizations incl. role building in the area of SAP archiving (ADK)
HANA/S/4HANA installation and administration incl. backup strategy via Backint (Networker)
HANA High Availability levels 1–3 (System Replication, RHEL Pacemaker cluster for HANA servers and SAP AS) incl. design and implementation consulting
SAP Data Intelligence and containerization of applications with Kubernetes (Red Hat OpenShift)
Certified SAP CCoE with at least 10 productive SAP installations as well as many legacy systems; subproject lead for SAP Basis projects
Enterprise Architecture & Transformation: architecture governance, EAM/LeanIX-style documentation, agile project work

Technologies: SAP NetWeaver 7.0x–7.5x, S/4HANA 1709/1809, BW4HANA, Oracle RAC 12x, SLES12, RHEL 7.4–7.7, AIX 7.2

Oct 2019 - Nov 2019

2 months

Mannheim, Germany

SAP Basis IT Specialist

INTER Versicherungen Mannheim

EHP8 upgrade of a 3-system landscape (SAP NetWeaver 7.5 / ERP 6.0, Linux, DB2)

Jul 2019 - Aug 2019

2 months

SAP Basis Consultant

Daimler Truck Supply

System/SLA monitoring (Xandria), 1st-level support, transport and database administration, release upgrades

Aug 2018 - Dec 2018

5 months

SAP Consultant / Technical Project Lead SAP Migration

neu-itec GmbH

Combined Unicode Upgrade (CU&UC), EHP8 upgrade, Oracle upgrade 12.1 → 12.2, operating system migration, Solution Manager 7.2 installation

Oct 2017 - Feb 2020

2 years 5 months

SAP Basis Administrator

BWI GmbH

System monitoring (Xandria/Ganglia), HANA migration project for ERP systems, authorization management incl. role migration, SAP CCoE (10+ productive systems), archiving (ADK), backup & recovery DB2/TSM

Aug 2017 - May 2021

3 years 10 months

SAP Consultant

Deutsche Edelstahlwerke

System monitoring/EWA, job scheduling, EDI/ALE, security audit log, performance tuning, SAP GRC Global Trade Services

Aug 2017 - Apr 2018

9 months

Hanover, Germany

SAP Consultant / Technical Project Lead Migration & Authorizations

Treuhand Hannover

Setup of a 3-system landscape, EHP7 upgrade, Unicode migration, MaxDB administration, review of authorization concept, role administration (PFCG)

Aug 2017 - Dec 2017

5 months

SAP Consultant

Deutsche Bundesbank

Windows 10 / Office 2016 rollout, SAP GUI 7.40 / 7.50 test cases and rollout, ticket handling (Remedy)

Oct 2016 - Jul 2017

10 months

SAP Consultant / SAP Basis Project Lead

Nordex SE

System monitoring & sizing, single sign-on (Kerberos, ABAP/Java/GUI-for-HTML), performance optimization, coordination of external service providers

May 2016 - Sep 2016

5 months

SAP Consultant / Project Lead

Deutz AG

Redesign of authorization management (inductive approach, segregation of duties, compliance), role development (PFCG), SAP Access Control, eCATT

Apr 2016 - Jul 2016

4 months

SAP Consultant

Vonovia SE

Role maintenance and development (PFCG), user management, mass changes (SU10), custom approval processes

Jan 2016 - Feb 2016

2 months

SAP Consultant

ETIMEX Technical Components GmbH

EHP7 upgrade in the live ERP system, Oracle administration, kernel patching in the MS cluster

Jul 2015 - Present

11 years 1 month

SAP Basis Consultant

AEG Power Solutions

Monitoring ERP/BW/CRM, NetWeaver 7.0 installation, client copies, user management (ZBV), Oracle and Windows cluster administration

Jul 2015 - Jun 2017

2 years

SAP Consultant

Lohmann Animal Health / Elanco Deutschland

Server administration (VMWare/vSphere), authorization administration, IDM, carve-outs (SAP LT Tools), subproject management, interface support

Jul 2012 - May 2015

2 years 11 months

Aachen, Germany

SAP Basis Administrator

AWA Entsorgung GmbH

Installations of ERP 6.0/BW & BW portal, EHP4/EHP6 upgrades, system copies, authorization administration (PFCG)

Jul 2012 - May 2015

2 years 11 months

Aachen, Germany

SAP System Integrator

Aachener Straßenbahn und Energieversorgungs-AG

Installations of SAP ERP 6.0, database/central instance installation, client copies, authorization administration

Jul 2012 - May 2015

2 years 11 months

Aachen, Germany

SAP System Integrator

Stadt Aachen

Administration of 10 customer systems, installations of ERP 6.0/BW/HCM, EHP upgrades, connection to Solution Manager 7.1

Mar 2012 - May 2015

3 years 3 months

SAP System Integrator

Factur Billing Solutions

Administration of 25 SAP systems, installations of SAP ERP 6.0/IS-U, EHP upgrades, Unicode migration, connection to Solution Manager 7.1

Nov 2011 - Apr 2015

3 years 6 months

Aachen, Germany

SAP Basis Administrator

STAWAG Stadtwerke Aachen AG

Support of 30 customer systems, installations of ERP 6.0/IS-U/BW/CRM/HCM, EHP upgrades, proactive monitoring via Solution Manager

Oct 2011 - May 2015

3 years 8 months

Eupen, Belgium

SAP Basis Administrator

Ministerium der Deutschsprachigen Gemeinschaft

Installation of ERP 6.0 on MS SQL Server, Unicode migration, project management for Unicode conversion, identity management

Jun 2011 - Sep 2011

4 months

On-site

Customer System Support, 1st & 2nd Level Support

CSB System AG

Customer system support, 1st & 2nd level support for the in-house ERP system. CSB System CSB System AG has about 30 locations worldwide

Industry Experience

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

Experienced in Information Technology, Manufacturing, Government and Administration, Energy, Utilities, and Metals and Mining.

Information Technology

Manufacturing

Government and Administration

Energy

Utilities

Metals and Mining

Business Area Experience

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

Experienced in Information Technology, Project Management, Operations, Strategy, Business Intelligence, and Quality Assurance.

Information Technology

Project Management

Operations

Strategy

Business Intelligence

Quality Assurance

Summary

Benjamin Wennmacher is an SAP NetWeaver and Basis consultant with more than 15 years of project experience (since 2011) in complex, highly available SAP system landscapes. His focus is on the secure operation, migration, and strategic transformation of SAP systems - from classic ERP 6.0 landscapes to SAP HANA and S/4HANA, and on to cloud-based RISE and GROW with SAP models.

He has led SAP Basis projects for more than 25 customers in industries such as telecommunications, automotive, energy and waste management, steel, public administration, pharma, insurance, and in federal and defense environments - often in the role of technical project lead, SAP lead architect, or principal consultant.

His combination of deep Basis know-how, cloud and enterprise architecture skills, and experience in regulated environments (federal authorities, defense, banks) makes him a sought-after specialist for demanding SAP transformation projects.

Skills

Telecommunications
Automotive
Energy And Waste Management
Steel Industry
Municipal Customers / Public Transport Companies
Pharmaceutical Industry
Property Management
Banks
Tax Consulting
Defense / Federal Authorities
Insurance
Operating Systems: Linux (Sles 11/12/15), Rhel 7.X/8.X, Windows Server 2008/2012 R2/2016/2019, Aix 7.X
Databases: Sap Hana, Oracle 11.X–19c, Maxdb 7.7–7.9, Ms Sql Server 2008–2012, Ibm Db2, Sybase Ase
Tools: Ms Office/Visio/Project/Sharepoint, Ibm Lotus Notes, Ticket Systems (Remedy, Hp Service Manager, Snow, Jira, Omnitracker, Maximo), Symantec Backup Exec, Vnc, Teamviewer, Winscp, Vsphere Client, Syslink Xandria

Languages

German

Native

English

Advanced

Dutch

Elementary

Education

Aug 2008 - Jun 2011

Apprenticeship as a computer science business administrator (IHK) · Computer science business administrator

Certifications & licenses

Project Manager Certification

IHK

C_HANATEC_13 – SAP Certified Technology Associate, SAP HANA 2.0

IAL certificate in Basis, MM and SD

SAP User Certification MM

Statistics

Experience

Total positions 30

Experience in Information Technology 12.5 y

Avg length 2 y

Longest experience 11 y

Global Experience

Countries worked in 2 (Germany, Belgium)

Primary country Germany

Expertise

Recent roles SAP Basis, SAP Basis / Enterprise Architecture, IT Specialist SAP Basis

Main industries Information Technology, Manufacturing, Government and Administration

Main business areas Information Technology, Project Management, Operations

Qualifications

Certifications earned 4

Profile

Created

July 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Benjamin based?

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

What languages does Benjamin speak?

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

How many years of experience does Benjamin have?

Benjamin has at least 15 years of experience. During this time, Benjamin has worked in at least 18 different roles and for 30 different companies. The average length of individual experience is 1 year and 6 months. Note that Benjamin may not have shared all experience and actually has more experience.

What roles would Benjamin be best suited for?

Based on recent experience, Benjamin would be well-suited for roles such as: SAP Basis, SAP Basis / Enterprise Architecture, IT Specialist SAP Basis.

What is Benjamin's latest experience?

Benjamin's most recent position is SAP Basis at IT Baden-Württemberg (BITBW).

What companies has Benjamin worked for in recent years?

In recent years, Benjamin has worked for IT Baden-Württemberg (BITBW), GIZ – German Corporation for International Cooperation, q.beyond – various end customers, q.beyond – Alliance Healthcare Deutschland GmbH, and q.beyond – Tchibo.

Which industries is Benjamin most experienced in?

Benjamin is most experienced in industries like Information Technology, Manufacturing, and Government and Administration. Benjamin also has some experience in Energy, Metals and Mining, and Utilities.

Which business areas is Benjamin most experienced in?

Benjamin is most experienced in business areas like Information Technology, Project Management, and Operations. Benjamin also has some experience in Strategy, Business Intelligence, and Quality Assurance.

Which industries has Benjamin worked in recently?

Benjamin has recently worked in industries like Manufacturing, Information Technology, and Government and Administration.

Which business areas has Benjamin worked in recently?

Benjamin has recently worked in business areas like Information Technology, Operations, and Project Management.

What is Benjamin's education?

Benjamin attended education in Computer science business administrator.

Does Benjamin have any certificates?

Benjamin has 4 certificates. Among them, these include: Project Manager Certification, C_HANATEC_13 – SAP Certified Technology Associate, SAP HANA 2.0, IAL certificate in Basis, and MM and SD.

What is the availability of Benjamin?

Benjamin is immediately available part-time for suitable projects.

What is the rate of Benjamin?

Benjamin's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.