08/03/2026 updated

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Senior SAP SD / OTC Consultant | S/4HANA | Order-to-Cash | SAP IS-U | Integration | Pricing

Ankara, Turkey
Only remote
MSc in Data and Information Engineering
Ankara, Turkey
Only remote
MSc in Data and Information Engineering

Profile attachments

Mesut_Fikri_Geleri_Senior_SAP_SD_OTC_Consultant_CV.pdf

About me

Senior SAP SD/OTC Consultant with 10+ years of experience in SAP SD, SAP IS-U, Order-to-Cash, pricing and billing integration. Strong cross-functional and ABAP debugging skills. Available for remote, part-time T&M support (20-80 hrs/month).

Agile MethodologyAtlassian JiraBusiness AnalysisSAP IDocRedmineSAP ABAPSAP ApplicationsSAP Functional ConsultingSAP HANASAP ImplementationSAP IS-USAP LogisticsSAP R/3SAP SDSAP Solution ManagerSystems IntegrationSAP DevelopmentSAP IS
SAP SD & Order-to-Cash (OTC)
Approximately 10 years of experience in SAP SD functional consulting, covering end-to-end Order-to-Cash design, pricing, billing and invoicing, partner determination, output determination, credit management, copy control, and IS-U Billing across energy, healthcare, railway, mining, automotive and defense sectors.

S/4HANA Transformation & Solution Design
Hands-on involvement in S/4HANA migration and transformation projects, including business requirement analysis, functional design, configuration, testing, rollout support, and go-live delivery. Experienced in fit-gap analysis, functional specification ownership, and RICEFW coordination.

SAP Integration & Technical Analysis
Expertise in SAP-to-SAP and SAP-to-non-SAP integration scenarios using IDoc and web services, e-Invoice integration processes, interface analysis, and ABAP-level debugging to translate functional requirements into robust technical solutions.

IS-U IDEX & Billing
Configuration and support of the SAP IS-U IDEX module for SAP-to-SAP data exchange and market communication, including PDOC and IDoc customizing, meter data management, and billing process support.

Fiori App Support & UI Process Design
Support of Fiori applications to improve process reliability and user experience, including contribution to Fiori UI and process-improvement concepts within sales and logistics workflows.

Business Analysis & Functional Specifications
Authoring of functional specifications, facilitation of workshops with business users, fit-gap analysis, and UAT coordination to ensure stable end-to-end delivery.

Agile Delivery & Change Management
Experience in agile delivery methodologies, change and defect management using tools such as Jira, SAP Solution Manager, and Redmine across large-scale transformation and rollout projects.

Data & Information Engineering
Academic background in Data and Information Engineering with relevant areas including data engineering, AI foundations, cybersecurity, optimization, and analytical systems thinking, enabling data-driven process design.

Industrial Engineering & Process Optimization
BSc-level foundation in Industrial Engineering covering operations research, statistics, simulation, data mining, quality control, and process optimization, applied to SAP solution design and business analysis.

Experience

Professional experience10+ years
Freelancer since2023

Languages

EnglishFluentTurkishNative speaker

Project history

Freelance SAP SD / IS-U Billing Consultant

Freelance / Remote
Providing remote SAP SD and IS-U Billing consulting to global and enterprise clients including Siemens Healthineers, ATOS, Eti Maden, TCDD, TEMSA, and EnerjiSA. Responsibilities include issue analysis, solution design, end-to-end OTC and billing support, IDoc and web service-based integration, ABAP enhancement analysis, pricing and partner function support, Fiori application support, and contribution to S/4HANA transformation and rollout activities.

SAP SD Consultant

Havelsan
Acted as key SAP SD functional consultant for public-sector and defense clients. Contributed to one SAP ECC implementation and one S/4HANA migration project covering business requirement analysis, functional design, configuration, and testing. Authored functional specifications, coordinated RICEFW objects, designed sales and logistics process flows, contributed Fiori UI and process-improvement concepts, and supported integration testing and UAT cycles.

SAP IS-U IDEX Consultant

EnerjiSA
Configured and supported the SAP IS-U IDEX module for SAP-to-SAP data exchange and market communication. Managed PDOC and IDoc customizing across billing, meter data management, and market communication processes. Facilitated workshops with business users to gather requirements and align solution design. Performed ABAP-level debugging and root-cause analysis to resolve complex billing and integration issues.

Certificates

SAP S/4HANA Sales 1809 Upskilling

SAP

2021

Sales and Distribution with SAP ERP 6.0 EhP7

SAP

2021


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