Christian Kämmerer - SAP MM/PP Consultant for S/4HANA

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Kürnach, Germany

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Experience

Jan 2023 - Present

3 years 10 months

Consultant “S/4HANA Implementation in the MM Module”

ABISCON GmbH

Support for the SAP “Sourcing & Procurement” modules as part of the “S/4HANA Brownfield” project rollout for the entire company
Analysis, design and organization of IT-supported business processes
Further development of SAP MM in ECC 6.0 into S/4HANA, from requirements and process analysis through design to implementation (customizing, programming)
Optimization and documentation of business processes and applications
Responsible implementation of the S/4HANA rollout as an external consultant
Independent performance of problem analyses and their resolution
Definition of change requests and their implementation/testing in cooperation with internal key users and process owners
Support for SAP key users in Germany, Austria and Switzerland
Training and support for users in connection with the rollout

Apr 2022 - Jun 2023

1 year 3 months

Subproject Manager “S/4HANA Implementation in the PP Module”

CSV GmbH

Development of a Global Group Template based on SAP S/4HANA best-practice processes following a greenfield approach
Planning, design and execution of fit-gap analyses with the aim of maximizing the use of best-practice processes in S/4HANA
Assessment of as-is processes with key users and process owners for comparison with best-practice processes through process visualization in Microsoft Visio
Development and definition of to-be requirements (system/process) in cooperation with functional departments
Selection and definition of suitable Fiori apps for optimally mapping customer-specific requirements in line with the best-practice process
Evaluation and assessment of options for harmonizing processes between different plants/sites to avoid workarounds
Development of cross-module solution concepts to close gaps from an end-to-end perspective using the SAP standard

Apr 2022 - Oct 2022

7 months

Consultant “SAP ERP 6.0 Optimization in the MM Module”

CSV GmbH

Development, design and implementation of a SET order consisting of two material numbers by creating a higher-level material number
Development and evaluation of solution scenarios for mass changes in the source list as part of automatic source determination
Evaluation of the options and limitations for planning and visualizing rough-cut and detailed production planning in SAP ECC vs. SAP S/4HANA, including market analysis of competing solutions and preparation for top management
Development and implementation of a solution to avoid duplicate order texts from the info record and order text, including customizing
Development and go-live of a new calculation schema for automatic price determination in purchasing

Sep 2021 - Mar 2022

7 months

Agile Project Lead “Optimization of E2E Processes in MM and WM (SAP ECC)”

All for One Group SE

Optimization, further development and rethinking of end-to-end materials management and logistics processes in MM and WM by increasing the level of digitalization and automation for guided buying and platform-based purchasing using SAP standard functionality
Professional and agile project planning, management and preparation of all relevant master and transaction data in SAP Embedded Analytics
Close cooperation with cross-functional departments, suppliers and supporting internal functional departments through remote workshops
Performance of process analyses and evaluation of potential for cross-module and cross-departmental process optimization and harmonization from an E2E perspective
Management of the material master (creation, change and blocking), including mass data changes
Creation and change of company codes, plants, storage locations and similar organizational units
Set-up of the source list and maintenance of quota arrangements, MRP parameters, lot sizes, etc.

Aug 2021 - Mar 2022

8 months

Project Lead “S/4HANA Implementation in the MM Module”

All for One Group SE

Assessment of current processes together with central purchasing and market-unit purchasing using BPMN diagrams
Development and definition of to-be requirements with functional departments
Fit-gap analysis against best/right-practice processes and development of solution concepts to close the gaps using the system
Customizing of systems with regard to organizational units, number ranges, document types, movement types, item categories, user parameters and similar settings
Definition of Fiori apps to map requirements according to the to-be process
Support for the technical development of custom apps addressing recurring customer needs such as subscriptions, licenses and similar requirements
Planning and execution of integration tests
Training of key users, including preparation of documentation

Jul 2021 - Jun 2023

2 years

Project Manager “S/4HANA Implementation in the MM and PP Modules”

2nd-Tier manufacturer and supplier of couplings and components

Independent analysis, design, realization and implementation of selected MM and PP processes as part of the redesign of logistics processes and production planning and control using PP-DS
Design of target processes, definition of standards in coordination with the specialist departments and independent implementation in test and production systems
Preparation of functional concepts and their implementation in the respective module
Design and development of SAP applications and functions in direct contact with the (Global) Key Users and specialist departments
Customizing of deviations in the PP environment, such as bill of materials usage, routings, variant determination and batch creation, among others
Preparation of training materials and test plans in English/German
Leading role in integration tests and Go-Live
Change management and regular coordination with specialist departments and stakeholders

Jun 2021 - Sep 2021

4 months

Project Manager “BPML Creation and Migration in SAP Solution Manager”

2nd-Tier niche supplier for actuators, insert molding and hybrid assemblies in the automotive sector

Inventory and modeling of current processes with specialist departments in Signavio and transfer to a central Business Process Master List (BPML)
Cross-functional analysis and modeling of core processes such as Make-to-order, Engineer-to-order, Order-to-Cash, Purchase-to-Pay, Install-to-Repair, Plan-to-Order and Record-to-Report
Definition of target processes in coordination with specialist departments and adaptation in Signavio
Definition and support for the technical development of interfaces for automated import and export between Signavio and SAP Solution Manager
Design, definition and creation of process libraries in SAP Solution Manager based on the SAP Best Practice methodology
Planning and execution of test scenarios to map use cases in coordination with specialist departments and stakeholders

Jan 2020 - Jul 2021

1 year 7 months

Process Manager “Pre-Study S/4HANA Transformation”

1st Tier automotive supplier and market leader for safety technology in Europe

Planning, design and execution of current-state process analyses according to BPMN 2.0 conventions
Independent development and modeling of target Level-3 end-to-end processes in SAP SD, PM, PP, MM, WM, PS, FI and CO
Structured planning and execution of fit/gap analyses and process optimizations through remote workshops with Key Users and Process Owners
Comparison with SAP Best Practice and All for One Right Practice processes based on the All For One business process library
Evaluation and consolidation of target processes
Precise preparation of potential and organizational analyses as the basis for an S/4HANA roadmap
IT solutions used: SAP ECC 6.0, EhP 6.0 and Signavio

Jan 2020 - May 2021

1 year 5 months

Subproject Manager “Application Transition”

Global market leader for pumps, valves and services

Responsibility for and management of the subproject using an agile approach, including management of the three specialist areas (network, applications, databases)
Close cooperation with the project manager from the specialist department
Interface function with other subprojects, e.g. Security, SAP migration, Citrix
Project planning and project controlling (time/budget/resources)
Preparation and compilation of weekly status reports and reporting of the subproject status to the steering committee
Communication and, if necessary, escalation of challenges that cannot be resolved within the project team to the project manager or project sponsor
Development and adherence to communication and reporting structures within the project and with other subprojects
Preparation of documentation in German/English regarding the transition process, integration of security requirements, etc.
Establishment and management of risk management and the change request process
Participation in developing the transition concept and collecting and evaluating requirements from the subproject perspective
Conflict management within the team

Jan 2020 - Jul 2020

7 months

SAP S/4HANA Greenfield Implementation Consultant in the MM Module

Market leader in Germany for electrical connections and charging stations

Training of specialist departments in the optimal use of MM functionalities
Efficient preparation and execution of project workshops and project training sessions
Preparation of process descriptions and user documentation
Execution of integration tests and go-live support
Successful parametrization of the SAP system
Customizing in the area of SAP OEs, number ranges, creation of document types, etc.
IT solutions used: SAP S/4HANA 1909

Jan 2018 - Jul 2018

7 months

Project Lead Global Parts Logistics Excellence

Institute for Inventory Optimization

Profitable conception, planning and development of a project to realign spare parts logistics
Independent analysis and conception of logistics, administrative and planning processes
Preparation and processing of analyses and decision papers for the Steering Committee
Management and optimization of the supply chain
Achievements: Reduction of safety stocks by approx. 11 % and simultaneous increase in availability to >80 %
IT solutions used: SAP Business Warehouse and simulation tools according to the LAKOR method

Apr 2017 - Jun 2018

1 year 3 months

Project Lead New Concept for Material Planning

Institute for Inventory Optimization

Independent planning, conception and development of a strategy project to analyze, design and implement operational and strategic material planning processes along the supply chain in a three-stage distribution network
Successful implementation of a test system, including planning and execution of simulation runs
Achievements: Increase in forecast accuracy from 71 % to 82 %, increase in item availability to >98 %, reduction of safety stocks by 18 % and reduction of inventory coverage by 21 %
IT solutions used: leading planning tool, best-pick forecasting method with automatic outlier detection and cleaning as well as reliable trend detection, simulation tools according to the LAKOR method

Industry experience

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

Experienced in Professional Services, Information Technology, Manufacturing, Automotive, and Energy.

Professional Services

Information Technology

Manufacturing

Automotive

Energy

Business area experience

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

Experienced in Information Technology, Procurement, Project Management, Supply Chain Management, Operations, and Logistics.

Information Technology

Procurement

Project Management

Supply Chain Management

Operations

Logistics

Summary

As an experienced SAP consultant, I use my expertise in ECC and S/4HANA to support your customers in making optimal use of their SAP solutions in the logistics environment, with a focus on MM/PP. The precise integration of the ERP system with the associated processes is essential. This requires a comprehensive understanding of systems and processes. I have gained this through many years of consulting experience as well as in-depth knowledge of logistics processes. I therefore ensure the perfect interaction of the SAP solution with the people, strategies, processes and functions that are crucial to your competitive advantage.

Skills

10 Years Of Experience In Management Consulting In The Sap Environment (Self-Employed And Leading Sap Consulting Firm), Across Industries
Focus On The Mm And Pp Logistics Modules In Sap Ecc And S/4hana
Several Successful S/4hana Implementations In Sap Mm/Pp
Relevant Expertise In Harmonizing And Standardizing Business Processes According To Sap Best Practice/All For One Right Practice Approaches
Business Process Analysis And Modeling According To Bpmn 2.0 Conventions, Including Bpml Creation
Several Years Of Experience Managing Strategy Projects For The Planning And Design Of Global Logistics Networks
Planning, Management And Controlling Of Complex Supply Chains In Global Distribution And Production Networks

Languages

German

Advanced

English

Advanced

Education

Executive MBA · Business Informatics

Promotion · Value-Oriented Inventory Management

Certifications & licenses

SAP MM-Berater Procurement ERP 6.0 EhP 7

Statistics

Experience

Total positions 12

Experience in Professional Services 6.5 y

Avg length 1 y 2 m

Longest experience 3 y 9 m

Expertise

Recent roles Consultant “S/4HANA Implementation in the MM Module”, Subproject Manager “S/4HANA Implementation in the PP Module”, Consultant “SAP ERP 6.0 Optimization in the MM Module”

Main industries Professional Services, Information Technology, Manufacturing

Main business areas Information Technology, Procurement, Project Management

Qualifications

Highest degree Doctorate

Certifications earned 1

Profile

Member since

June 2025

Last update

October 2026

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Frequently asked questions

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Christian is based in Kürnach, Germany.

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

Christian has at least 8 years of experience. During this time, Christian has worked in at least 12 different roles and for 9 different companies. The average length of individual experience is 1 year and 8 months. Note that Christian may not have shared all experience and actually has more experience.

Based on recent experience, Christian would be well-suited for roles such as: Consultant “S/4HANA Implementation in the MM Module”, Subproject Manager “S/4HANA Implementation in the PP Module”, Consultant “SAP ERP 6.0 Optimization in the MM Module”.

Christian's most recent position is Consultant “S/4HANA Implementation in the MM Module” at ABISCON GmbH.

In recent years, Christian has worked for ABISCON GmbH, CSV GmbH, All for One Group SE, and 2nd-Tier manufacturer and supplier of couplings and components.

Christian is most experienced in industries like Professional Services, Information Technology, and Manufacturing. Christian also has some experience in Automotive and Energy.

Christian is most experienced in business areas like Information Technology, Procurement, and Project Management. Christian also has some experience in Supply Chain Management, Operations, and Logistics.

Christian has recently worked in industries like Professional Services, Information Technology, and Manufacturing.

Christian has recently worked in business areas like Information Technology, Procurement, and Project Management.

Christian holds a Doctorate in Value-Oriented Inventory Management and a Master in Business Informatics.

Christian has 1 certificate: SAP MM-Berater Procurement ERP 6.0 EhP 7.

Christian is immediately available part-time for suitable projects.

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Daily rate avg. 960 €

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Median rate 920 €

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Calculated based on our freelancers’ daily rates as of 18 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.