All-stack SAP technische Beratung/Umsetzung
Aktualisiert am 12.10.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 01.11.2026
Verfügbar zu: 100%
davon vor Ort: 40%
ABAP
Java
Javascript
Angular
Node.js
Cloud
Integration
Hybris
Commerce
Analytics
German
fluent
English
fluent
Chinese
mother tongue

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

3 Jahre 7 Monate
2023-03 - heute

Designed and implemented a high-performance document generation solution

Developer, Architect ABAP SD MM FI ...
Developer, Architect
  • Designed and implemented a high-performance document generation solution by integrating SAP ABAP with open-source technologies (Apache POI, FOP, docx4j), achieving a tenfold performance increase compared to legacy VBA applications
  • Performed deep data-model optimizations of legacy ABAP code to streamline and de-risk migration paths toward SAP S/4HANA
  • Led the data migration architecture and execution in a large-scale enterprise project replacing an SAP core with a custom in-house software solution
  • Contributed to strategic concepts for replacing SAP ECC through the integration of Business Process Management (BPM) software and Business Rule Engines
  • Provided comprehensive support for software infrastructure, focusing on high availability, test automation, CI/CD, and SAP basis administration
  • Evaluated and introduced AI to development process
ABAP SD MM FI DMS SAP NetWeaver RFC SDK Java Spring Node.js Kubernetes CI/CD BPM Business Rules AI Data Migration PostgreSQL
Pharma
1 Jahr 6 Monate
2021-07 - 2022-12

Designed a high-performance day-trading MVP software

Founder, Independent Software Developer Angular Node.js Artificial Intelligence ...
Founder, Independent Software Developer


Angular Node.js Artificial Intelligence Geometry Quantitative Analytics Linux Scripts Cloud hosting
on request
1 Jahr 1 Monat
2020-06 - 2021-06

Carve an custom ECC logistic component

Technical lead OpenShift Cloud Java Kafka ...
Technical lead

Spearheaded the architectural separation of a custom ECC logistics component, re-implementing it as a cloud-native microservices architecture on OpenShift with asynchronous event streams (Kafka) as part of an overarching S/4HANA program

OpenShift Cloud Java Kafka Microservices REST APIs SAP MM CI/CD Observability
Automobile
5 Monate
2020-01 - 2020-05

Enhance and apply SAP DTV tool

Consultant, Developer SAP Data Transition Validation (DTV) ABAP SAP FI ...
Consultant, Developer

Enhanced and applied the SAP DTV tool to secure and validate financial data migration (SAP FI) to S/4HANA for a major chemistry enterprise

SAP Data Transition Validation (DTV) ABAP SAP FI S/4HANA
Chemistry
1 Jahr
2019-01 - 2019-12

SAP S/4 HANA green-field project

Development Lead SAP S/4HANA SAP PM SAP Fiori ...
Development Lead

  • Acted as Development Lead in a green-field SAP S/4HANA logistics implementation, performed quality assurance for custom WRICEF objects, ensuring adherence to technical standards and architectural best practices
  • Consulted stakeholders on adopting multiple modern SAP technologies, with an emphasis on Fiori extensions and SAP BTP integration scenarios
SAP S/4HANA SAP PM SAP Fiori SAP BTP XSA Mobile Integration Strategies
Automobile
9 Monate
2018-04 - 2018-12

Design integration solutions

Integration Consultant SAP Concur Salesforce SAP CPQ ...
Integration Consultant

Designed and executed complex cross-system integration solutions within a large enterprise landscape primarily using SAP products, REST, SOAP, and advanced cloud integration technologies to consolidate third-party components into SAP.

SAP Concur Salesforce SAP CPQ SAP BTP S/4 HANA SOM SAP Billing REST SOAP Cloud Integration
Travel Software
11 Monate
2017-05 - 2018-03

SAP-Fiori based financial leasing application

Stream Lead for Fiori Development (with hands-on tasks) SAP Portal SAP Fiori SAPUI5 ...
Stream Lead for Fiori Development (with hands-on tasks)

Directed development activities for an SAP Fiori-based financial leasing application, designing and coordinating seamless integration flows between front-end UI components, backend services, Business Rules (BRF+), and Workflows

SAP Portal SAP Fiori SAPUI5 ABAP Gateway BRF+ Workflow Integration Patterns
Telecommunications
6 Monate
2016-11 - 2017-04

Implementation of a subscription-based web shop

Consultant and Developer SAP Hybris Commerce Java Spring Data Hub ...
Consultant and Developer

Implemented subscription-based and standard web shops, designing robust cloud-integrations and data flows connecting SAP Hybris with external ecosystems like SAP Fieldglass, CRM, via SAP CPI

SAP Hybris Commerce Java Spring Data Hub SAP CPI Jenkins REST APIs SAP Fieldglass / CRM Integration
Food/Software
4 Monate
2016-07 - 2016-10

Implementation of a web shop

Consultant and Developer
Consultant and Developer
Implemented subscription-based and standard web shops, designing robust cloud-integrations and data flows connecting SAP Hybris with external ecosystems like SAP Fieldglass, CRM, via SAP CPI
Food/Software
10 Monate
2015-09 - 2016-06

Implementation of financial Profit and Loss Analytic Application

Senior Developer SAPUI5 SAP HANA XSC ...
Senior Developer
Developed and delivered a financial Profit and Loss Analytic application as an official SAP standard product, exposing optimized backend models via high-performance OData services
SAPUI5 SAP HANA XSC Calculation Views OData Services FI/CO SQL Performance Tuning
1 Jahr
2014-09 - 2015-08

Design and Implementation of telemetry data search infrastructure

Lead Developer HANA XSC CDS Views ...
Lead Developer

HANA XSC CDS Views SQL SQL-script Python C++ Performance analysis
automobile customer
7 Monate
2014-02 - 2014-08

Build a POC of data replication in HANA database for a fail-over scenario

Senior Developer SAP ECC SQL SCALA ...
Senior Developer
Build a POC of data replication in HANA database for a fail-over scenario to be demonstrated in Sapphire
SAP ECC SQL SCALA C++ System Replication
5 Jahre 7 Monate
2008-07 - 2014-01

Develop, extend, optimize SAP Java Virtual Machine

Developer Compiler Java JVM ...
Developer
  • Develop, extend, optimize SAP Java Virtual Machine
Compiler Java JVM Performance analysis CPU architecture C/C++ Assembly
1 Jahr 11 Monate
2006-09 - 2008-07

Development of a new ABAP compiler infrastructure

Developer C/C++ Compiler ABAP
Developer

C/C++ Compiler ABAP
4 Jahre 6 Monate
2002-04 - 2006-09

Development of a VHDL simulation software

Senior Developer EDA VHDL Compiler ...
Senior Developer

EDA VHDL Compiler C/C++ Assembly Performance analysis Software testing Software porting Software quality

Aus- und Weiterbildung

Aus- und Weiterbildung

2 Jahre 7 Monate
1999-09 - 2002-03

Computer science

Master's degree, Tongji University, SHANGHAI, CHINA
Master's degree
Tongji University, SHANGHAI, CHINA

pattern recognition and intelligence system

3 Jahre 11 Monate
1993-09 - 1997-07

Physics

Bachelor's degree, Jilin University, Changchun China
Bachelor's degree
Jilin University, Changchun China

theoretical physics

Position

Position

  • Entwickler
  • Architekt
  • Technische Leitung

Kompetenzen

Kompetenzen

Top-Skills

ABAP Java Javascript Angular Node.js Cloud Integration Hybris Commerce Analytics

Produkte / Standards / Erfahrungen / Methoden

IT - Skills

  • BPM (Business Process Management)
  • Business Rules / Business Rule Engines
  • Microservices
  • Observability
  • SAP PM
  • WRICEF
  • SAP CPI


Work Experiences

03/2023 ? today

Role: FREELANCER

Customer: PHARMA CUSTOMER, MANNHEIM, GERMANY


Tasks:

  • Consultation on the modernization of technologies and their integration into the highly customized SAP ECC ERP software


06/2021 - 12/2022

Role: Founder

Customer: on request, Mannheim


Tasks:

  • Designed a high performance day-trading software for stock market: HTML on request


04/2018 - 06/2021

Role: SENIOR DELIVERY ARCHITECT

Customer: Capgemini GmbH, Frankfurt


Tasks:

  • Technical lead in SAP S/4 HANA implementation projects 
  • Design and development in Cloud Migration projects 
  • Pre-sales support for SAP commerce cloud bids


05/2017 - 03/2018

Role: SENIOR CONSULTANT

Customer: Sopra Steria, Frankfurt


Tasks:

  • Lead development activities of a SAP-Fiori based financial leasing application for a telecom customer


06/2016 - 04/2017

Role: CONSULTANT

Customer: Ecenta AG, Walldorf


Tasks:

  • Development and extend SAP Hybris Commerce for different customers
  • Design and development interfaces between SAP Hybris Commerce and external systems 
  • Develop SAPUI5-based mobile app for a customer


09/2006 - 05/2016

Role: SENIOR DEVELOPER

Customer: SAP EG, SHANGHAI, WALLDORF, POTSDAM


Tasks:

  • Extending SAP ABAP compiler infrastructure 
  • Developing Just-In-Time compiler as part of SAP Java Virtual Machine team 
  • Researching SAP HANA asynchronous data replication 
  • Lead development in a HANA based data analytics project 
  • Developing the user interface and performing optimization of an analytical financial application


04/2002 - 08/2006

Role: SENIOR DEVELOPER

Customer: Synopsys GmbH, SHANGHAI, CHINA


Tasks:

  • Design, develop, optimize, test, maintain a large-scale electronic design automation(EDA) software

Datenbanken

PostgreSQL

Datenkommunikation

REST APIs / REST
SOAP

Branchen

Branchen

  • Automotive
  • Pharmaceuticals
  • Software / Software Development
  • Chemicals
  • Telecommunications
  • Food Industry
  • Financial Services / Stock Market

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

3 Jahre 7 Monate
2023-03 - heute

Designed and implemented a high-performance document generation solution

Developer, Architect ABAP SD MM FI ...
Developer, Architect
  • Designed and implemented a high-performance document generation solution by integrating SAP ABAP with open-source technologies (Apache POI, FOP, docx4j), achieving a tenfold performance increase compared to legacy VBA applications
  • Performed deep data-model optimizations of legacy ABAP code to streamline and de-risk migration paths toward SAP S/4HANA
  • Led the data migration architecture and execution in a large-scale enterprise project replacing an SAP core with a custom in-house software solution
  • Contributed to strategic concepts for replacing SAP ECC through the integration of Business Process Management (BPM) software and Business Rule Engines
  • Provided comprehensive support for software infrastructure, focusing on high availability, test automation, CI/CD, and SAP basis administration
  • Evaluated and introduced AI to development process
ABAP SD MM FI DMS SAP NetWeaver RFC SDK Java Spring Node.js Kubernetes CI/CD BPM Business Rules AI Data Migration PostgreSQL
Pharma
1 Jahr 6 Monate
2021-07 - 2022-12

Designed a high-performance day-trading MVP software

Founder, Independent Software Developer Angular Node.js Artificial Intelligence ...
Founder, Independent Software Developer


Angular Node.js Artificial Intelligence Geometry Quantitative Analytics Linux Scripts Cloud hosting
on request
1 Jahr 1 Monat
2020-06 - 2021-06

Carve an custom ECC logistic component

Technical lead OpenShift Cloud Java Kafka ...
Technical lead

Spearheaded the architectural separation of a custom ECC logistics component, re-implementing it as a cloud-native microservices architecture on OpenShift with asynchronous event streams (Kafka) as part of an overarching S/4HANA program

OpenShift Cloud Java Kafka Microservices REST APIs SAP MM CI/CD Observability
Automobile
5 Monate
2020-01 - 2020-05

Enhance and apply SAP DTV tool

Consultant, Developer SAP Data Transition Validation (DTV) ABAP SAP FI ...
Consultant, Developer

Enhanced and applied the SAP DTV tool to secure and validate financial data migration (SAP FI) to S/4HANA for a major chemistry enterprise

SAP Data Transition Validation (DTV) ABAP SAP FI S/4HANA
Chemistry
1 Jahr
2019-01 - 2019-12

SAP S/4 HANA green-field project

Development Lead SAP S/4HANA SAP PM SAP Fiori ...
Development Lead

  • Acted as Development Lead in a green-field SAP S/4HANA logistics implementation, performed quality assurance for custom WRICEF objects, ensuring adherence to technical standards and architectural best practices
  • Consulted stakeholders on adopting multiple modern SAP technologies, with an emphasis on Fiori extensions and SAP BTP integration scenarios
SAP S/4HANA SAP PM SAP Fiori SAP BTP XSA Mobile Integration Strategies
Automobile
9 Monate
2018-04 - 2018-12

Design integration solutions

Integration Consultant SAP Concur Salesforce SAP CPQ ...
Integration Consultant

Designed and executed complex cross-system integration solutions within a large enterprise landscape primarily using SAP products, REST, SOAP, and advanced cloud integration technologies to consolidate third-party components into SAP.

SAP Concur Salesforce SAP CPQ SAP BTP S/4 HANA SOM SAP Billing REST SOAP Cloud Integration
Travel Software
11 Monate
2017-05 - 2018-03

SAP-Fiori based financial leasing application

Stream Lead for Fiori Development (with hands-on tasks) SAP Portal SAP Fiori SAPUI5 ...
Stream Lead for Fiori Development (with hands-on tasks)

Directed development activities for an SAP Fiori-based financial leasing application, designing and coordinating seamless integration flows between front-end UI components, backend services, Business Rules (BRF+), and Workflows

SAP Portal SAP Fiori SAPUI5 ABAP Gateway BRF+ Workflow Integration Patterns
Telecommunications
6 Monate
2016-11 - 2017-04

Implementation of a subscription-based web shop

Consultant and Developer SAP Hybris Commerce Java Spring Data Hub ...
Consultant and Developer

Implemented subscription-based and standard web shops, designing robust cloud-integrations and data flows connecting SAP Hybris with external ecosystems like SAP Fieldglass, CRM, via SAP CPI

SAP Hybris Commerce Java Spring Data Hub SAP CPI Jenkins REST APIs SAP Fieldglass / CRM Integration
Food/Software
4 Monate
2016-07 - 2016-10

Implementation of a web shop

Consultant and Developer
Consultant and Developer
Implemented subscription-based and standard web shops, designing robust cloud-integrations and data flows connecting SAP Hybris with external ecosystems like SAP Fieldglass, CRM, via SAP CPI
Food/Software
10 Monate
2015-09 - 2016-06

Implementation of financial Profit and Loss Analytic Application

Senior Developer SAPUI5 SAP HANA XSC ...
Senior Developer
Developed and delivered a financial Profit and Loss Analytic application as an official SAP standard product, exposing optimized backend models via high-performance OData services
SAPUI5 SAP HANA XSC Calculation Views OData Services FI/CO SQL Performance Tuning
1 Jahr
2014-09 - 2015-08

Design and Implementation of telemetry data search infrastructure

Lead Developer HANA XSC CDS Views ...
Lead Developer

HANA XSC CDS Views SQL SQL-script Python C++ Performance analysis
automobile customer
7 Monate
2014-02 - 2014-08

Build a POC of data replication in HANA database for a fail-over scenario

Senior Developer SAP ECC SQL SCALA ...
Senior Developer
Build a POC of data replication in HANA database for a fail-over scenario to be demonstrated in Sapphire
SAP ECC SQL SCALA C++ System Replication
5 Jahre 7 Monate
2008-07 - 2014-01

Develop, extend, optimize SAP Java Virtual Machine

Developer Compiler Java JVM ...
Developer
  • Develop, extend, optimize SAP Java Virtual Machine
Compiler Java JVM Performance analysis CPU architecture C/C++ Assembly
1 Jahr 11 Monate
2006-09 - 2008-07

Development of a new ABAP compiler infrastructure

Developer C/C++ Compiler ABAP
Developer

C/C++ Compiler ABAP
4 Jahre 6 Monate
2002-04 - 2006-09

Development of a VHDL simulation software

Senior Developer EDA VHDL Compiler ...
Senior Developer

EDA VHDL Compiler C/C++ Assembly Performance analysis Software testing Software porting Software quality

Aus- und Weiterbildung

Aus- und Weiterbildung

2 Jahre 7 Monate
1999-09 - 2002-03

Computer science

Master's degree, Tongji University, SHANGHAI, CHINA
Master's degree
Tongji University, SHANGHAI, CHINA

pattern recognition and intelligence system

3 Jahre 11 Monate
1993-09 - 1997-07

Physics

Bachelor's degree, Jilin University, Changchun China
Bachelor's degree
Jilin University, Changchun China

theoretical physics

Position

Position

  • Entwickler
  • Architekt
  • Technische Leitung

Kompetenzen

Kompetenzen

Top-Skills

ABAP Java Javascript Angular Node.js Cloud Integration Hybris Commerce Analytics

Produkte / Standards / Erfahrungen / Methoden

IT - Skills

  • BPM (Business Process Management)
  • Business Rules / Business Rule Engines
  • Microservices
  • Observability
  • SAP PM
  • WRICEF
  • SAP CPI


Work Experiences

03/2023 ? today

Role: FREELANCER

Customer: PHARMA CUSTOMER, MANNHEIM, GERMANY


Tasks:

  • Consultation on the modernization of technologies and their integration into the highly customized SAP ECC ERP software


06/2021 - 12/2022

Role: Founder

Customer: on request, Mannheim


Tasks:

  • Designed a high performance day-trading software for stock market: HTML on request


04/2018 - 06/2021

Role: SENIOR DELIVERY ARCHITECT

Customer: Capgemini GmbH, Frankfurt


Tasks:

  • Technical lead in SAP S/4 HANA implementation projects 
  • Design and development in Cloud Migration projects 
  • Pre-sales support for SAP commerce cloud bids


05/2017 - 03/2018

Role: SENIOR CONSULTANT

Customer: Sopra Steria, Frankfurt


Tasks:

  • Lead development activities of a SAP-Fiori based financial leasing application for a telecom customer


06/2016 - 04/2017

Role: CONSULTANT

Customer: Ecenta AG, Walldorf


Tasks:

  • Development and extend SAP Hybris Commerce for different customers
  • Design and development interfaces between SAP Hybris Commerce and external systems 
  • Develop SAPUI5-based mobile app for a customer


09/2006 - 05/2016

Role: SENIOR DEVELOPER

Customer: SAP EG, SHANGHAI, WALLDORF, POTSDAM


Tasks:

  • Extending SAP ABAP compiler infrastructure 
  • Developing Just-In-Time compiler as part of SAP Java Virtual Machine team 
  • Researching SAP HANA asynchronous data replication 
  • Lead development in a HANA based data analytics project 
  • Developing the user interface and performing optimization of an analytical financial application


04/2002 - 08/2006

Role: SENIOR DEVELOPER

Customer: Synopsys GmbH, SHANGHAI, CHINA


Tasks:

  • Design, develop, optimize, test, maintain a large-scale electronic design automation(EDA) software

Datenbanken

PostgreSQL

Datenkommunikation

REST APIs / REST
SOAP

Branchen

Branchen

  • Automotive
  • Pharmaceuticals
  • Software / Software Development
  • Chemicals
  • Telecommunications
  • Food Industry
  • Financial Services / Stock Market

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