Serkan CETIN

Worked as a freelance consultant in global S/4HANA projects covering modules such as EWM, OTC, GTS, TM, VIM, SD, MM, FICO, and PP. Delivered ABAP on HANA developments, RAP-based OData services, and Fiori/UI5 applications.
Provided QA reviews including ATC and Extended Check, supported CI/CD processes, and ensured clean core principles in development.
Designed and implemented logistics and finance solutions including RFUI enhancements, custom cockpit programs, process-specific reports, and workflow-based improvements.
Conducted proof of concept projects on SAP BTP including CAP model, UI5 development, and Cloud Foundry deployment.

Led and delivered multiple S/4HANA implementation, upgrade, and conversion projects with responsibility for solution design and development.
Performed end-to-end RICEFW activities including requirement analysis, design, development, unit testing, user acceptance testing, and deployment.
Developed CDS views, AMDP methods, and RAP-based OData services to enable efficient data access and integration.
Designed and delivered SAP Fiori/UI5 custom applications, extensions, MyInbox enhancements, and launchpad configurations.
Implemented SAP and non-SAP integration scenarios using REST, SOAP, API, RFC, IDoc, and ALE technologies.
Contributed to e-transformation processes including e-invoice, e-archive, e-ledger, dispatch, and banking integrations.
Acted as QA reviewer, performing ATC and Extended Check validations, clean code reviews, and supporting CI/CD automation.
Worked in Agile and DevOps environments, collaborating with stakeholders, preparing technical documentation, and ensuring scalable architecture as a solution architect.

Worked as ABAP developer in ECC/R3 projects, focusing on classical development including ALV reports, dialog programming, Smartforms, SAPscript, and Adobe forms.
Performed RICEFW developments using BAPI, BADI, user exits, LSMW, BDC, and built integrations with RFC and ALE/IDoc.
Delivered solutions across different industries such as insurance, energy, logistics, manufacturing, and retail in modules including SD, MM, FI, CO, PP, PM, QM, and HR.
Contributed to full cycle implementation and support projects by analyzing business requirements and delivering effective technical solutions.
Ensured code quality through performance tuning, modular design, and compliance with SAP development standards.