09/11/2026 updated
verified
100 % availableSenior SAP ABAP Developer
Garby, Poland
Only remote
Master of Arts in Marketing Management, Adam Mickiewicz University in PoznanAbout me
I am a Senior SAP ABAP Developer with 11 years of deep technical expertise, specializing in bridging the gap between legacy SAP ECC environments and modern cloud architectures. Throughout my career, I have helped enterprises safeguard their core business logic while driving digital transformation.
Data TransformationSAP ABAPSAP Customizing/KonfigurationSAP HANASAP ImplementationSAP DevelopmentSAP Integration SolutionsSAP CertificationSAP BTPSAP BAPI
ABAP Development (ECC & HANA)
Expert-level ABAP development covering both classical and object-oriented programming, including procedural programming, Dynpro programs, Function Modules, BADI implementations, CDS views, ABAP RESTful programming (EML), and ABAP Cloud development .
SAP CRM & S/4HANA Development
Extensive experience in SAP CRM and S/4HANA development, including BOL/GENIL developments, SAP CRM WebUI customizing, S4HANA CM WebUI development, UI component development, and ERMS configuration.
OData & SAP Netweaver Gateway
Senior-level expertise in OData backend programming, creation of services in the Gateway system, OData implementation on-premise and in cloud environments, as well as SAPUI5 application development and maintenance.
SAP Integration Suite (CPI)
Experience with SAP CPI Iflow integration, including integration of SAP Ariba and SAP DataSphere via Integration Suite, RFC configuration for CPI communication, and CPI development for outbound data logic.
SAP Smart Forms & Adobe Forms
Expert-level knowledge in creation and enhancement of SAP Smart Forms and Adobe Forms, including printing reports and document output management.
SAP BTP & ABAP Cloud
Certified in ABAP Cloud (2025) and SAP BTP Solutions Architect. Experience with BTP BAS, BTP CAP, SAP Business Application Studio, and SAP AI Core Service on SAP BTP.
SAP ERP Modules (FI, MM, SD)
Senior-level knowledge of SAP ERP modules including FI, MM, and SD, with practical experience in integrated information systems covering WM, FI-CO, PP, SD, QM, and ABAP.
SAP Data Migration
Experience in data migration projects using Migration Cockpit, including migration of SAP Standard Data in SAP Tables and creation of Function Modules to migrate Custom Data in SAP HANA.
GitHub & DevOps
Practical experience with GitHub for version control, including committing new logic, transporting solutions to customer systems both online and offline, and supporting DevOps processes in SAP projects.
SAP Fiori & BAS
Implementation of Fiori BAS-based applications, including OData implementation on-premise, CDS views for data fetch, BAS Fiori implementation, and IAM implementation with Business Catalogue configuration.
Experience
Professional experience10+ years
Freelancer since2025
Languages
EnglishFluentPolishFluent
Project history
Creation of webservice to fetch BP data from GUS and store them in SAP Custom Table. ABAP logic implementation for fetching and mapping the fetched data from GUS and storing in the custom Table.
Implementation of version 2.0 of e-Invoicing Backend. Configuration of Custom Tables, ABAP logic to connect to new Java APIs, enhancements of BADIs, Classes, Reports to 2.0 KSeF standards set by the Polish Government, RFC Creation, transporting the solution to customers systems using Github, bug fixing and enhancements, enhancement of html transformation.
OData development and Trigger report development, RFC configuration for communication with CPI, CPI integration to S4/Hana connection plus Credentials configuration in IS, ITS service configuration for RF scanner transaction, RF scanner configuration.