11/01/2026 updated
80 % partially available
SAP Full-Stack Developer | ABAP / ABAP OO | S/4HANA | SAPUI5 / Fiori | OData | RAP | CDS
Liberec, Czech Republic
Only remote
Ing. (Master), Systems Engineering, Czech University of Life Sciences, 2019About me
SAP full-stack developer (ABAP OO, OData, CDS/RAP, SAPUI5/Fiori) with 7 years in enterprise S/4HANA environments. I deliver end-to-end applications from requirements to production and use AI-assisted development daily. Available part-time (evenings), remote, CET.
SAP CloudSAP ERPSAP ABAPSAP COSAP Customizing/KonfigurationSAP CRMSAP FISAP FI/COSAP HRSAP ImplementationSAP R/3SAP ProjektmanagementSAP DevelopmentSAP AMSRISE with SAP
ABAP & ABAP OO Development
7+ years of advanced ABAP and ABAP Object-Oriented programming, including development on S/4HANA 2023 (7.58) with custom DPC/MPC implementations and role-based authorization models.
SAP Full-Stack Development (SAPUI5 / Fiori & OData)
Advanced skills in building full-stack SAP applications: SAPUI5/Fiori frontends with JavaScript, HTML and CSS, combined with SEGW OData service design and backend integration, from requirements analysis through to production operation.
CDS & RAP (Core Data Services / RESTful Application Programming)
2+ years of intermediate-level experience in CDS data modelling and the ABAP RESTful Application Programming Model (RAP) for modern SAP development on S/4HANA.
Code Quality & Clean Core
ATC / Onapsis Code Profiler checks and remediation for the SAP upgrade; code reviews; ATC analyses for Clean Core compliance ahead of the SAP RISE migration.
CI/CD & DevOps
CI/CD pipelines in Azure DevOps and Git-based workflows (GitHub), build and deployment automation.
SQL & JavaScript
SQL (8+ years, intermediate) for querying and data modelling in SAP landscapes; JavaScript (4+ years, advanced) in SAPUI5/Fiori frontend development.
AI-Assisted & Agentic Development
Daily use of AI and GenAI methods in development: LLM integration, prompt engineering for reliable business output and codified agent workflows with Joule, SAP Build Code, Copilot and Claude Code.
SAP Landscape & Modules
Development and analysis across HR (current), MM and FI/CO. Working knowledge of SAP BTP and SAP CAP.
Tools
Advanced: SAP, GitHub, Azure DevOps, JIRA, Copilot, Claude Code. Intermediate: Joule, SAP Build Code, SAP Build Apps, LeanIX.
IT System Analysis & Architecture
Analysis, design and development of system solutions, rollout management, cross-departmental and vendor coordination, application architecture proposals and technical documentation.
Experience
Professional experience5 - 10 years
Freelancer since2026
Languages
GermanGoodEnglishFluent
Project history
Design and implementation of full-stack SAP applications to digitalize and automate key business processes. Backend: ABAP / ABAP OO on S/4HANA 2023 (7.58), SEGW OData services with custom DPC/MPC implementations, CDS data modelling and RAP. Frontend: freestyle SAPUI5/Fiori, JavaScript, HTML, CSS. Direct collaboration with internal customers and IT teams from requirements analysis through architecture design to production operation. Selected project in production: occupational safety training application with OData service, custom data provider class of ~8,000 lines of ABAP OO, role-based authorization model, Adobe Forms output, automated notification process and complete SAPUI5 front end (15 views). AI/GenAI: AI-assisted and agentic development as a daily working method including LLM integration, prompt engineering and codified agent workflows using Joule, SAP Build Code, Copilot and Claude Code.
Responsible for analysis, design and development of system solutions in material management (MM module). Managed rollout of new applications, coordinated collaboration across departments and with external vendors on system architecture design, and supported users and trained key users including creating detailed documentation for efficient system use.
Led IT service projects for material management, including discussing client requirements, managing change processes and coordinating across departments and with external partners. Involved in optimizing and implementing applications, approving configurations and overseeing system modifications. Work emphasized analysis of planned IT changes and preparation of application architecture proposals.