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serhatmercan/README.md

Hi, I'm Serhat Mercan 👋

SAP Technical Lead | SAP BTP & Generative AI | ABAP & SAP Fiori/UI5

I'm a Software Engineer and SAP Technical Lead with 8+ years of experience delivering enterprise SAP solutions across SAP S/4HANA, ABAP, SAP Fiori/UI5, OData, SAP Gateway, CDS and enterprise integration.

My current focus is SAP BTP, SAP Business AI and Generative AI for SAP — applying them to build intelligent, maintainable and business-oriented SAP solutions on top of a solid engineering foundation.

Current Focus

  • Generative AI for SAP
  • SAP BTP & SAP Business AI
  • SAP AI Core, AI Launchpad & Generative AI Hub
  • AI-assisted SAP modernization
  • ABAP Cloud, RAP & CDS
  • SAP Fiori/UI5 & Fiori Elements
  • Enterprise integration and solution architecture
  • Technical leadership

Selected Projects

Enterprise AI / SAP Modernization

Internal initiatives and R&D work — not public repositories.

  • Finance Intelligence Copilot — Internal R&D initiative exploring how Generative AI can support SAP Finance decision-making with evidence-based explanations, deterministic controls and human approval.
  • AI-Assisted SAP ABAP Cloud Modernization — Initiative focused on modernizing legacy SAP solutions toward ABAP Cloud/RAP/CDS patterns with AI-assisted engineering support.

Public GitHub Portfolio

  • UIGuide — Practical SAP Fiori/UI5 engineering reference and UI development notes.
  • CDSGuide — Chapter-based ABAP CDS reference covering modelling, annotations, functions, access control and service exposure.
  • ABAPGuide — Practical ABAP engineering reference covering classic, object-oriented and modern ABAP patterns.
  • GWGuide — SAP Gateway / OData V2 engineering reference for SEGW-based enterprise services.
  • CDS-Cookbook — Practical SAP CDS & AMDP pattern library.
  • telco-churn-predictor — Applied ML project using a scikit-learn pipeline, validation-selected threshold, SHAP explanations and a FastAPI web app.

SAP Engineering Stack

  • SAP Backend: ABAP · ABAP OO · CDS · RAP · BAPI/RFC · OData · SAP Gateway
  • SAP Frontend: SAP Fiori · SAPUI5 · Fiori Elements · JavaScript
  • SAP Cloud & AI: SAP BTP · SAP AI Core · AI Launchpad · Generative AI Hub · SAP CAP
  • Architecture: SAP S/4HANA · enterprise integration · solution architecture · technical leadership

AI & Data Work

Alongside enterprise Generative AI work, I also maintain applied learning projects in Python, data science and machine learning to strengthen my understanding of model evaluation, classification workflows and data-driven decision-making.

  • telco-churn-predictor — applied churn prediction project with model evaluation, validation-selected thresholding and FastAPI serving.
  • PYGuide — supporting Python reference cookbook.

My primary professional focus remains Generative AI for enterprise SAP solutions.

Open Source / Knowledge Sharing

I maintain chapter-based engineering references for the SAP topics I work with most — ABAP, ABAP CDS, SAP Fiori/UI5 and SAP Gateway — with the goal of keeping practical, reusable notes that other SAP developers can build on.

Connect

Building enterprise SAP solutions with SAP BTP, Generative AI and modern SAP engineering practices.

Pinned Loading

  1. UIGuide UIGuide Public

    SAPUI5 & Fiori cookbook with practical controls, patterns, Fiori Elements extensions, OData integration, and legacy/modern UI5 examples.

    JavaScript 12 1

  2. CDSGuide CDSGuide Public

    Practical SAP ABAP CDS reference covering data modeling, annotations, functions, access control, and classic-to-modern service exposure.

    19 1

  3. ABAPGuide ABAPGuide Public

    Practical SAP ABAP engineering reference covering classic, object-oriented and modern ABAP, with explicit lifecycle guidance for enterprise landscapes.

    6 2

  4. telco-churn-predictor telco-churn-predictor Public

    End-to-end churn prediction on the IBM Telco dataset — scikit-learn pipeline with validation-selected threshold, SHAP explanations, and a FastAPI web app.

    Jupyter Notebook

  5. GWGuide GWGuide Public

    A practical SAP Gateway engineering reference for SEGW-based OData V2 services: MPC_EXT annotations, DPC_EXT CRUDQ, deep entities, media streams, function imports and error handling.

    ABAP 7

  6. CDS-Cookbook CDS-Cookbook Public

    Practical SAP CDS & AMDP pattern library — standard-view references, custom view entities, extensions, value helps and HANA table functions.

    ABAP