10/29/2026 updated
100 % available
Senior SAP MDG / ABAP / Integration Specialist
Poznań, Poland
Worldwide
MSc in Economics, specialization in Computer Science and Economics, Poznan University of EconomicsAbout me
Senior SAP MDG Developer with 20+ years of experience in ABAP OO, MDG-BP and MDG-MM. Expert in master data modeling, UI extensions, workflows, BRF+, Fiori, OData and integration. Proven track record delivering scalable solutions managing millions of business partners and materials.
SAP Integration SuiteData GovernanceSAP ERPSAP ABAPSAP HANASAP PI/POSolution ArchitectureSAP DevelopmentSAP Integration SolutionsSAP MDG
SAP Master Data Governance (MDG-BP / MDG-MM)
Expertise in SAP MDG-BP and MDG-MM covering data model and UI extensions, validation and derivation logic, rule-based and flexible workflow, replication and integration for high-volume landscapes with millions of business partners and materials.
ABAP Object-Oriented Development
Over 20 years of SAP ABAP OO development experience including BRF+, CDS Views, RAP, Fiori Elements and SAP S/4HANA, with a proven track record of delivering scalable, high-performance solutions including a 120x performance improvement through code optimization.
SAP Integration Technologies
Broad integration expertise covering OData, REST, SOAP, IDoc/ALE/EDI, SAP Integration Suite, SAP PI/PO, BAPI, RFC and APIs, with hands-on experience connecting SAP systems to Salesforce, Azure Service Bus, PIM and other enterprise platforms.
BRF+ Workflow Management
Design and implementation of advanced BRF+-based workflow management, flexible workflow, e-mail notifications and flexible UI determination for high-volume governance processes.
SAP Fiori / Fiori Elements
Development of user-facing Fiori and Fiori Elements applications including custom UI5 backend services, value-help enhancements and enterprise applications for hundreds of users.
CDS Views
Creation of CDS Views for data modeling, reporting and service exposure in SAP S/4HANA and SAP MDG environments.
RAP (RESTful ABAP Programming Model)
Architecture and development of enterprise applications using RAP in SAP S/4HANA, including backend services and user-facing functionality.
Solution Architecture & Technical Leadership
End-to-end solution design from technical architecture and data modeling to implementation and deployment, including stakeholder alignment and global rollout responsibilities.
SAP Data Migration
Experience in SAP data migrations, cross-module ABAP development and international rollout support across multiple industries.
Enterprise Governance & Standards
Implementation of authorization-aware value helps, 4-eyes controls, governance standards and replication enhancement points to ensure data quality and compliance.
Expertise in SAP MDG-BP and MDG-MM covering data model and UI extensions, validation and derivation logic, rule-based and flexible workflow, replication and integration for high-volume landscapes with millions of business partners and materials.
ABAP Object-Oriented Development
Over 20 years of SAP ABAP OO development experience including BRF+, CDS Views, RAP, Fiori Elements and SAP S/4HANA, with a proven track record of delivering scalable, high-performance solutions including a 120x performance improvement through code optimization.
SAP Integration Technologies
Broad integration expertise covering OData, REST, SOAP, IDoc/ALE/EDI, SAP Integration Suite, SAP PI/PO, BAPI, RFC and APIs, with hands-on experience connecting SAP systems to Salesforce, Azure Service Bus, PIM and other enterprise platforms.
BRF+ Workflow Management
Design and implementation of advanced BRF+-based workflow management, flexible workflow, e-mail notifications and flexible UI determination for high-volume governance processes.
SAP Fiori / Fiori Elements
Development of user-facing Fiori and Fiori Elements applications including custom UI5 backend services, value-help enhancements and enterprise applications for hundreds of users.
CDS Views
Creation of CDS Views for data modeling, reporting and service exposure in SAP S/4HANA and SAP MDG environments.
RAP (RESTful ABAP Programming Model)
Architecture and development of enterprise applications using RAP in SAP S/4HANA, including backend services and user-facing functionality.
Solution Architecture & Technical Leadership
End-to-end solution design from technical architecture and data modeling to implementation and deployment, including stakeholder alignment and global rollout responsibilities.
SAP Data Migration
Experience in SAP data migrations, cross-module ABAP development and international rollout support across multiple industries.
Enterprise Governance & Standards
Implementation of authorization-aware value helps, 4-eyes controls, governance standards and replication enhancement points to ensure data quality and compliance.
Experience
Professional experience10+ years
Freelancer since2008
Languages
EnglishFluentPolishNative speaker
Project history
Lead developer for SAP MDG-MM and MDG-BP solutions governing 1.5M+ materials, 500k+ business partners and 34 plants. Extended MDG-MM data model and UI with custom fields and implemented derivations. Designed advanced BRF+-based workflow management, Flexible Workflow, e-mail notifications and flexible UI determination. Implemented inbound ProductMDMBulkReplicateRequest integration and parallel processing of plant data. Delivered MDG-BP workflow and UI enhancements, custom UI5 backend services, 4-eyes controls and integrations with geolocation and EU VIES services. Technologies: SAP MDG-MM, SAP MDG-BP, ABAP OO, BRF+, CDS, SAP Cloud Integration, UI5 backend, web services.
Member of a compact two-developer team delivering MDG-BP enhancements for a landscape with 3.4M+ business partners, including 1M+ organizations and 3.3M+ contact persons. Implemented Flexible Workflow, flexible agent determination and flexible UI determination. Developed Business Partner data-model/UI extensions, value-help enhancements and custom Fiori applications for Contact Person and Customer maintenance. Implemented integration between MDG and Bechtle.com (SAP Hybris) and enhanced outbound master data replication using BAdIs. Technologies: SAP MDG-BP, ABAP OO, CDS, Fiori, SAP Cloud Integration, outbound replication BAdIs.
Villeroy & Boch: implemented an e-mail notification framework for SAP MDG-BP Rule-Based Workflow. Durr: implemented Return Supplier linkage between Customer and Vendor, derivation of vendor payment block and 4-eyes principle checks. Freudenberg: delivered e-mail notification enhancements for MDG-BP workflow and related business-rule logic. SEW-EURODRIVE: restricted standard MDG value helps using authorization objects for customer, supplier, purchasing and sales attributes. Technologies: SAP MDG-BP, ABAP, BRF+, workflow, validation/derivation, authorization concepts.