Paul Oesterwitz - Senior Manager

Q: Where is Paul based?

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

Q: What languages does Paul speak?

Paul speaks the following languages: German (Native), English (Advanced), French (Elementary), Swedish (Elementary) .

Q: How many years of experience does Paul have?

Paul has at least 13 years of experience. During this time, Paul has worked in at least 18 different roles and for 10 different companies . The average length of individual experience is 1 year and 8 months . Note that Paul may not have shared all experience and actually has more experience.

Q: What is Paul's latest experience?

Paul's most recent position is Product Owner / Project Manager at Auditor, software vendor for German tax consultancies .

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

In recent years, Paul has worked for Auditor, software vendor for German tax consultancies , Automotive manufacturer , Automotive supplier , Internal , and High-tech company .

Q: Which industries is Paul most experienced in?

Paul is most experienced in industries like Automotive , Manufacturing , and Information Technology (IT) . Paul also has some experience in Banking and Finance , Professional Services , and Energy .

Q: Which business areas is Paul most experienced in?

Paul is most experienced in business areas like Information Technology (IT) , Procurement and Purchasing , and Logistics . Paul also has some experience in Supply Chain Management , Project Management , and Product Development .

Q: Which industries has Paul worked in recently?

Paul has recently worked in industries like Automotive , Manufacturing , and Information Technology (IT) .

Q: Which business areas has Paul worked in recently?

Paul has recently worked in business areas like Information Technology (IT) , Procurement and Purchasing , and Logistics .

Recommended expert

Mannheim, Germany

Experience

Apr 2025 - Sep 2025

6 months

Product Owner / Project Manager

Auditor, software vendor for German tax consultancies

Project environment: Python, Java, Azure AI Studio & OpenAI Studio, embedding models, LLM as a judge
Project language: German
Project role(s): Project manager
Project management for improving the performance of a chatbot
Research and evaluation of approaches to improve and measure response accuracy and improve the chatbot's understanding of context
Coordination of architecture decisions with the technical team and architects
Coordination and transfer of research results into development tasks

Jul 2024 - Nov 2024

5 months

Project manager, developer

Automotive manufacturer

Project environment: Python, vLLM, AWS Bedrock, Azure OpenAI Service
Project language: English, German
Project role(s): Project Manager
Project setup and management
Implementation of an automatic translation function for complaint management
Implementation of a function for LLM-supported translation of texts
Stakeholder management (internal and external)
Consulting on finding a technical solution

Apr 2024 - Jul 2024

4 months

Project manager

Auditor, software vendor for German tax consultancies

Project environment: Ollama, Python, Java, open source models such as Mistral and Gemma
Project language: English, German
Project role(s): Project manager
Project setup and management for the design of a GenAI function that generates business KPIs for the company's clients
Participation in architectural design and unit testing
Stakeholder management (internal and external)

Apr 2024 - Jun 2024

3 months

Project

Automotive manufacturer

Project environment: Python, eccenca Corporate Memory, Ollama, SPARQL
Project language: English, German
Project role(s): Project
Project setup and management for implementation of an ontology of a knowledge graph
Integration with LLM via generated SPARQL query
Stakeholder management (internal and external)
Testing the integration of external RDF triple store information into the knowledge graph
Functionality integration test (answering specific questions about the architecture of the managed IT systems and their components)

Sep 2023 - Mar 2024

7 months

Project manager, SME

Automotive supplier

Project environment: SAP SRM, wescale Procure, various in-house developments
Project language: English, German
Project role(s): Project manager, SME
SME for implementation of purchasing processes in the non-production environment
Design of a complex interface landscape for synchronizing mass data
Unit and integration testing, go-live support
Coordination with external software provider

Jun 2022 - Nov 2022

6 months

Project manager, developer

Internal

Project environment: SAP S/4HANA / AWS
Project language: German
Project role(s): Project manager, developer
Development of a neural network for decision-making within an SAP Fiori application
Support in the implementation of SAP interfaces (REST)
Marketing, e.g., using a deep dive (customer event)

Jun 2021 - Sep 2023

2 years 4 months

Stream lead for cross-company orders

High-tech company

Project environment: SAP ERP (various third-party solutions and various in-house developments)
Project language: German, English
Project role(s): Stream lead for cross-company orders
SME for purchasing processes and SAP MM
IT responsibility for implementation and design of relevant processes
Implementation of smaller development objects

Aug 2020 - May 2023

2 years 10 months

Stream lead for requisitioning & central procurement

Automotive manufacturer

Project environment: S/4HANA (+ Central Procurement + MDG), various in-house developments, WPS4, wescale Procure, legacy systems, numerous other third-party solutions
Project language: German, English
Project role(s): Stream lead for requisitioning & central procurement
SME for requirements management and SAP S/4HANA as well as S/4HANA Central Procurement
IT responsibility for implementation and design of relevant processes
Technical consulting on the selection of a software-based strategic procurement tool
Solution architecture for the integration of a centralized S/4HANA Central Procurement platform for cross-system purchasing
Development of sandbox, development, and quality systems

Aug 2020 - Mar 2021

8 months

Developer & process designer for shopping cart approval

Credit agency

Project environment: SAP SRM, ArchiveLink
Project language: German
Project role(s): Developer & process designer for shopping cart approval
Implementation of all development activities in the project environment
Solution design for position-based shopping cart approval and shopping cart completion
IT support for the test phase and cutover

Jan 2019 - Jun 2020

1 year 6 months

ANÜ project member, application consultant, developer

Automotive supplier

Project environment: SAP SRM, wescale Procure, various in-house developments
Project language: English
Project role(s): ANÜ project member, application consultant, developer
SME for indirect purchasing processes
Responsibility for and implementation of various developments within the scope of a customer project
Design and implementation of extensions to various interfaces for a purchasing cloud solution

Aug 2018 - Feb 2019

7 months

Subproject manager, process designer

Automotive manufacturer

Project environment: SAP ERP, various in-house developments
Project language: German
Project role(s): Subproject manager, process designer
SME for supplier evaluation processes
Responsible for achieving project goals (budget, scope, etc.)
Conducting customer workshops and defining the evaluation logic while ensuring compliance with the VDA standard
Supporting developers
Testing & documentation

Apr 2017 - Present

9 years

Project member, division manager

Automotive manufacturer

Project environment: SAP ERP, SAP APO, various in-house developments and third-party tools
Project language: German
Project role(s): Project member, division manager
SME for scheduling/logistics/module purchasing issues
Consultant responsible for legacy logistics systems and integrative issues between systems
Application management employee for solving operational problems
Partial developer

Mar 2016 - May 2017

1 year 3 months

Project member, consultant responsible for sourcing in a rollout plant

Automotive supplier

Project environment: SAP ERP, SAP APO, various in-house developments and third-party tools
Project language: English
Project role(s): Project member, consultant responsible for sourcing in a rollout plant
SOURCE Area Manager for Rollout Plant
Rollout coordinator & go-live supervisor for SOURCE module in a rollout plant
Test manager for SOURCE module in a rollout plant
Trainer for SOURCE module

Oct 2015 - Apr 2016

7 months

Subproject manager, project member, solution architect

Tool manufacturer

Project environment: SAP SLC, SAP ERP, various custom developments
Project language: German
Project role(s): Subproject manager, project member, solution architect
Support in acquiring the project
Conducting workshops to define departmental requirements
Complete customization of the system
Conceptualization of individual developments / creation of work packages
Partial support for custom development
Test management
Subproject management
Go-live support and hypercare, as well as subsequent application management after the project

Jun 2015 - Dec 2015

7 months

Project member, application management

Automotive supplier

Project environment: SAP SRM, SAP ERP, various in-house developments
Project language: English
Project role(s): Project member, application management
Technical and process-related system maintenance
3rd level IT employee
Integration testing for new versions of the system
Design/testing of enhancements for customer requirements

Oct 2014 - Dec 2014

3 months

Project member

Mineral oil, gas stations

Project environment: SAP SRM, Quadrem, SAP OpenText (VIM)
Project language: English
Project role(s): Project member
SME for SAP SRM
Conducting FitGap sessions with the customer, adapting business processes
Support in creating a role mapping work plan and training concepts

Oct 2013 - Apr 2015

1 year 7 months

Project member

Plant engineering & suppliers

Project environment: SAP MM, SAP SRM, SAP SLC (P2P stream)
Project language: German, English
Project role(s): Project member
SME for SAP SLC
Defining new business processes in the area of supplier management (onboarding, qualification, classification, evaluation)
Customizing the SLC system and creating numerous, partly integrative, extension concepts
Intensive coordination with offshore developers
Carrying out the implementation phase and defining test scenarios
Functional unit testing, technical unit testing, role unit testing

May 2013 - Oct 2013

6 months

Dual student in CRM consulting unit

SAP Deutschland AG & Co. KG (internal) Software & Consulting

Project language: German
Project role(s): Dual student in CRM consulting unit
Analysis of possible integration scenarios between legodo CCS (Customer Communication Suite) and SAP CRM
Setting up a test system landscape with a separate virtual machine and Apache Tomcat
Installation and integration of third-party software
Carrying out necessary minor SAP developments in the interface between the modules
Testing, documentation, and presentation at a higher management level

Nov 2012 - Feb 2013

4 months

Dual student at SRM Consulting unit

SAP Deutschland AG & Co. KG (internal) Software & Consulting

Project language: German
Project role(s): Dual student at SRM Consulting unit
Creating a catalog of requirements from procurement practice for a possible solution
Conducting customer interviews and designing a proposed solution
Technical validation of the solution with the SAP SLC development department

May 2011 - Aug 2011

4 months

Dual student at CRM consulting unit

SAP Deutschland AG & Co. KG (internal) Software & Consulting

Project language: German
Project role(s): Dual student at CRM consulting unit
Compilation of a catalog of requirements for a solution
Solution design and implementation of a beta version
Testing, presentation, and handover to CRM consulting department

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Automotive (10.5 years), Manufacturing (4.5 years), Information Technology (2 years), Banking and Finance (0.5 years), and Professional Services (0.5 years).

Automotive

Manufacturing

Information Technology

Banking and Finance

Professional Services

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (12 years), Procurement (12 years), Logistics (9 years), Supply Chain Management (6.5 years), Project Management (3 years), and Product Development (1.5 years).

Information Technology

Procurement

Logistics

Supply Chain Management

Project Management

Product Development

Summary

I bring extensive experience in managing complex projects across diverse industries, from tax consultancy to automotive manufacturing. I have led initiatives to improve chatbot performance, implement LLM-supported functionalities, and integrate intelligent systems in SAP environments. My background in business informatics and data science keeps me updated on modern digital trends and technical approaches.

I excel in project setup, stakeholder management, and driving technical innovation. I focus on delivering clear and measurable results while coordinating between technical teams and business stakeholders to ensure solutions effectively address real-world challenges.

Skills

Artificial Intelligence Sap

Genaiazure Ai / Openai, Aws Bedrock, Azure Document Intelligence, Ollama / Vllm For Open Source Llmsragmassive Vector Embedding Pipeline, Llm As A Judge Implementations (Deepeval) & Performance / Adherance Metrics Implementation, Optimization Of Retrieval /Chunking Output, Rdf Triple Store (Eccenca Corporate Memory)agentic Aiaws Bedrock Agents, Langchain, Ibm Watsonx.orchestrate, Haystackmlpython (Sklearn, Keras / Tensorflow), Several Supervised Learning Implementations, Shap, Embeddings, T-sne / Famd (Dimensionality Reduction), Feature Selection, Dataiku

Modules

Sap S/4hana (Predominately Mm And Central Procurement + Integration With Sd / Fi / Qm / Wm), Ecc, Srm, Slc

Technologies

Abap-oo, Bopf, Rap, Odata, Rest Apis, Cds, Clean Core, Brf+, Flexible Workflow,
Sap Build,
Btp (Joule Studio / Agent Builder)

Implementations

S/4hana And Ecc Green / Brown Field For Automotive And 1st Tier Suppliers, Global Indirect Procurement Platform (>200k Users) With 3rd Party Vendor Software & Comprehensive Custom Sap Srm Integration, Sap Slc / Srm Stand-alone System

Languages

German

Native

English

Advanced

French

Elementary

Swedish

Elementary

Education

Oct 2025 - Present

University of Mannheim

Doctoral project, Dr. rer. nat · Data Science · Mannheim, Germany

Apr 2021 - Apr 2024

Baden-Württemberg Cooperative State University – Center for Advanced Studies (DHBW CAS)

Master of Science in Business Informatics · Business Informatics · Heilbronn, Germany · 1.7

Oct 2010 - Oct 2013

DHBW Mannheim

Bachelor of Science in Business Informatics · Business Informatics · Mannheim, Germany · 2.3

...and 1 more

Profile

Created

March 2026

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

Do you have questions? Here you can find further information.

Where is Paul based?

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

What languages does Paul speak?

Paul speaks the following languages: German (Native), English (Advanced), French (Elementary), Swedish (Elementary).

How many years of experience does Paul have?

Paul has at least 13 years of experience. During this time, Paul has worked in at least 18 different roles and for 10 different companies. The average length of individual experience is 1 year and 8 months. Note that Paul may not have shared all experience and actually has more experience.

What roles would Paul be best suited for?

Based on recent experience, Paul would be well-suited for roles such as: Product Owner / Project Manager, Project manager, developer, Project manager.

What is Paul's latest experience?

Paul's most recent position is Product Owner / Project Manager at Auditor, software vendor for German tax consultancies.

What companies has Paul worked for in recent years?

In recent years, Paul has worked for Auditor, software vendor for German tax consultancies, Automotive manufacturer, Automotive supplier, Internal, and High-tech company.

Which industries is Paul most experienced in?

Paul is most experienced in industries like Automotive, Manufacturing, and Information Technology (IT). Paul also has some experience in Banking and Finance, Professional Services, and Energy.

Which business areas is Paul most experienced in?

Paul is most experienced in business areas like Information Technology (IT), Procurement and Purchasing, and Logistics. Paul also has some experience in Supply Chain Management, Project Management, and Product Development.

Which industries has Paul worked in recently?

Paul has recently worked in industries like Automotive, Manufacturing, and Information Technology (IT).

Which business areas has Paul worked in recently?

Paul has recently worked in business areas like Information Technology (IT), Procurement and Purchasing, and Logistics.

What is Paul's education?

Paul holds a Doctorate in Data Science from University of Mannheim, a Master in Business Informatics from Baden-Württemberg Cooperative State University – Center for Advanced Studies (DHBW CAS) and a Bachelor in Business Informatics from DHBW Mannheim.

What is the availability of Paul?

Paul will be available part-time from April 2026.

What is the rate of Paul?

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