Projects.

Enterprise software projects built around real business processes.

My work spans SAP ABAP development, Java backend systems, analytics data models, process automation, reporting applications, and integration scenarios across SD, MM, FI, CO, PP, and QM domains. I focus on turning fragmented operational data and manual workflows into structured, usable, and maintainable software solutions.

These projects include SAP GUI and Fiori applications, commercial and logistics reporting suites, Power BI data foundations, AI-assisted business interfaces, document lifecycle systems, intercompany reconciliation tools, and performance-focused enhancements. Each one was shaped by a practical business need: making processes faster, more visible, more controlled, or easier to operate.

// FEATURED CASE STUDIES

Flagship deliveries.

Twelve full-scale SAP developments with their own deep-dive pages — architecture, business rules and impact.

CASE STUDY / OSMAN AKÇA LOGISTICS

Fiori · Graphical analysis dashboard

// SAP GUI · FIORI · JAVA SPRING BOOT · AZURE AI · AKÇA HOLDING

Osman Akça Shipment & Logistics Analytics.

Transformed SAP shipment reporting into an AI-assisted logistics analytics platform accessible through both SAP GUI and Fiori, with a Java Spring Boot middleware bridging SAP and Azure AI. The solution consolidates sales order, delivery, invoice, transportation, customer, material and container data into a single reporting flow — with graphical dashboards and an authorization-aware AI chatbot scoped by plant-level and pricing permissions.

Channels: 2
AI: Azure
Charts: 6

SAP ABAP Fiori / UI5 OData / CDS Java Spring Boot Azure AI Dashboards

Read the full case study

CASE STUDY / OSMAN AKÇA SALES

SAP GUI · Sales & FOB analysis ALV output

// SAP SD · ABAP · PRICING CONDITIONS · FOB · AKÇA HOLDING

Osman Akça Sales & FOB Analysis Report.

SAP SD sales order analysis report developed for Osman Akça commercial operations. The report consolidates sales order, customer, material, delivery, pricing condition and exchange rate data into a single ALV screen. It calculates shipped and remaining quantities, net and gross values, sales USD, FOB amount, FOB USD and average FOB per unit, enabling customer, crop and product-group-based sales performance analysis.

Domain: SD
FOB: Item-level
Currency: → USD

SAP ABAP ALV Grid Pricing Conditions FOB Calculation Currency Conv.

Read the full case study

CASE STUDY / OSMAN AKÇA DELIVERY

SAP GUI · Delivery item & e-document tracking ALV

// SAP SD · ABAP · LIKP/LIPS · E-İRSALİYE · E-FATURA · AKÇA HOLDING

Osman Akça Delivery & E-Document Tracking.

SAP SD delivery item report developed for Osman Akça logistics operations. The report consolidates delivery header and item data with customer, country, material, material group, batch, sales order, shipment, carrier, e-delivery and e-invoice information. It enables users to track delivery items, goods movement status, actual goods issue dates, batch-level details and electronic document relationships from a single ALV screen.

Domain: SD / Log.
E-Docs: 2 types
Modes: Batch / Flat

SAP ABAP SALV Grid E-İrsaliye E-Fatura Shipment

Read the full case study

CASE STUDY / OSMAN AKÇA INVOICE

SAP GUI · Invoice & export documentation ALV

// SAP SD/FI · ABAP · CDS · E-FATURA · EXPORT · CIF/FOB · AKÇA HOLDING

Osman Akça Invoice & Export Documentation.

SAP SD/FI invoice reporting solution developed for Osman Akça commercial and export operations. The report consolidates invoice, sales order, delivery, customer, material, e-invoice, e-delivery, export declaration, GTIP, freight, insurance, CIF/FOB and due date data into a single ALV screen with document flow navigation to VF03, VL03N and VA03.

Domain: SD / FI
Export: GTİP+GÇB
Nav: VF03 / VL / VA

SAP ABAP CDS Views E-Fatura Export / Customs CIF / FOB

Read the full case study

CASE STUDY / OSMAN AKÇA EXPORT

SAP GUI · Export logistics data ALV

// SAP SD · ABAP · SHIPMENT · PORTS · INCOTERMS · AKÇA HOLDING

Export Logistics Data Report.

SAP SD export logistics data report developed for Osman Akça export operations. The report consolidates delivery, shipment, material, customer, country, port and transportation data into a single ALV screen. It enables users to track export deliveries by shipment number, product type, net weight, destination country, ports, transport mode and Incoterms-based freight responsibility.

Domain: SD / Export
Routing: Port → Port
Nav: VT03N

SAP ABAP ALV Grid Shipment Ports & Routes Incoterms

Read the full case study

CASE STUDY / ACCESS CONTROL & REPORTING

Role-based invoice visibility

✓ Billing document
✗ Net value
✓ E-Fatura number
✗ FOB / CIF amount
✓ Export file / GTİP
✗ Freight / Insurance
✓ Due date & lot
✗ Unit price / USD

SAP GUI · Visible vs. restricted field split (illustrative)

// SAP SD/FI · ABAP · AUTHORIZATION · ROLE-BASED VISIBILITY · AKÇA HOLDING

Price-Restricted Invoice Reporting.

A controlled operational invoice view that separates document visibility from commercial price visibility. Operational users get invoice, export, e-document and logistics data; sensitive net value, FOB/CIF, freight and pricing fields are excluded. User-level access controlled via a custom user authorization table with runtime access-flag logic.

Views: 2 roles
Auth: Table-based
Price fields: 0 exposed

SAP ABAP ALV Grid E-Fatura Auth Control Role Visibility

Read the full case study

CASE STUDY / IKEA SHIPMENT

IKEA SHIPMENT DOC FLOW

Billing doc ·

E-Fatura ·

Export / GÇB ·

GTİP ·

Design name ·

Fabric / dye ·

Print type ·

Cust mat no. ·

SAP GUI · Billing + e-doc + IKEA product identity fields

// SAP SD · ABAP · CDS · E-FATURA · EXPORT · IKEA PRODUCT ID · AKÇA HOLDING

IKEA Shipment Documentation & Invoice Flow Report.

Customer-specific SAP SD report for IKEA shipment document control. Connects billing, delivery, e-fatura, e-irsaliye, export file, GÇB, GTİP and IKEA product identity fields (customer design name, design number, variant, fabric, dye type, print group) in a single ALV screen — the full shipment document chain visible in one view.

Customer: IKEA
E-Docs: 2 types
ID fields: 9+

SAP ABAP CDS Views E-Fatura Export / GTİP IKEA Product ID

Read the full case study

CASE STUDY / IKEA SPI

Forecast Planning Suite — main ALV output

// SAP ABAP · MENDERES TEKSTIL × IKEA

IKEA Forecast Analysis Report.

Long-term forecast data coming from IKEA was transformed into an SAP-based analytical reporting suite — letting planning teams track 52-week demand changes, compare forecast revisions and visually monitor production-planning impact. Seven programs: an Excel-to-SAP loader, an update job, and five interactive reports with dynamic week columns, percentage-change logic and ALV + chart visualization.

Programs: 7
Horizon: 52 wk
Reports: 5

SAP ABAP ALV Grid Dynamic Tables SAP Charts Excel Upload

Read the full case study

CASE STUDY / SALES PLANNING APPLICATION

Editable planning grid · Revenue Planning

Customer
Prod. Group
Year/Month
Unit Price
Revenue
USD Revenue
501277
3020
2025/03
4.25
76.500
82.350
501285
3030
2025/04
6.80
85.000
85.000

Blue — editable · Green — auto-calculated

SAP GUI · Editable revenue planning ALV (illustrative)

// SAP SD · ABAP · EDITABLE ALV · PLANNING APPLICATION · AKÇA HOLDING

Annual Revenue Planning & Tracking.

Editable SAP ALV application that moves annual turnover targets from spreadsheets into SAP. Sales users maintain customer and product-group based plans with automatic revenue and USD calculations, F4-assisted product attribute entry, role-based visibility and row-level audit logging to custom tables.

Type: Planning App
Calc: Auto
Logging: Per row

SAP ABAP Editable ALV Revenue Calc USD Conversion Audit Log

Read the full case study

CASE STUDY / QM ANALYTICS

Power BI · Customer complaint & reclamation dashboard

// ABAP CDS · POWER BI · SAP QM · MENDERES TEKSTIL

Quality Management Analytics.

Designed an ABAP CDS-based analytical data foundation that transforms fragmented SAP QM data — customer complaints, defect records, cutting logs and quality decisions across three production plants — into structured, business-readable datasets consumed by Power BI dashboards for quality monitoring and defect analysis.

Domains: 4
Plants: 3
BI: Power BI

SAP ABAP ABAP CDS Power BI SAP QM Dashboards

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CASE STUDY / TERBIYE KALITE

ALV Grid — Quality Performance Output

Material
I. Quality
II. Quality
Defects
Source
Rate %
208441
1,842 m
214 m
18
Finishing
89.6%
305220
3,104 m
96 m
7
Weaving
97.0%
410087
956 m
312 m
41
Sewing
75.4%

ALV Grid · Finishing quality performance output (illustrative)

// SAP ABAP · SAP QM · ALV GRID · MENDERES TEKSTIL

Finishing Quality Performance Report.

A custom quality performance analysis report for the textile finishing process. Consolidates production orders, quality control lots, material data, quality notifications, defect records and approved quality logs into a single analytical screen — calculating first-quality rates, second-quality loss, defect-source breakdown and percentage-based metrics so quality and production teams can act on measurable data.

Sources: 6+
Defect classes: 4
Modes: 2

SAP ABAP ALV Grid OOP / Singleton SAP QM Quality Analytics

Read the full case study

CASE STUDY / TERBIYE PRODUCTION FLOW

SCREEN OPENING TIME · BEFORE vs AFTER

BEFORE

15min

AFTER

8sec

112× faster  ·  >99% wait time reduction

PRODUCTION OPERATION FLOW — SINGLE DOK
SIZING
SCOUR ✓
DYEING ◉
PRINT →
QUALITY

            ✓ completed  
            ◉ current  
            → next
          

SAP S/4HANA · ALV + CDS + Fiori · 15 min → 8 sec

// SAP PP · ABAP · CDS VIEWS · FIORI · S/4HANA · MENDERES TEKSTİL

Terbiye Production Flow Cockpit.

The textile finishing report that took 15 minutes to open was redesigned from the data model up. By moving computation into a layered CDS view hierarchy on SAP S/4HANA, the screen opens in 8 seconds — giving shop-floor teams and planners instant visibility into where each production document is, which operation just finished, and exactly where it goes next. The same CDS model powers both a SAP GUI ALV cockpit and a Fiori List Report with drill-down analytics.

Opening time: 8 sec
Speed gain: 112×
CDS layers: 5

SAP ABAP CDS View Entities Fiori / UI5 SAP PP S/4HANA ALV Grid

Read the full case study

CASE STUDY / POWER OF ATTORNEY

SAP GUI · Power of attorney ALV listing

// SAP ABAP · ALV · PDF MANAGEMENT · BCS MAIL · AKÇA HOLDING

Power of Attorney Lifecycle Management.

SAP GUI-based power of attorney lifecycle management solution developed for FI/legal document tracking. The application centralizes power of attorney records, validity dates, responsible departments, authorized persons and PDF attachments in SAP. It includes ALV listing, detail maintenance screens, PDF upload and preview, automated expiry notification emails, automatic deactivation of expired records and operation logging for auditability.

Domain: FI/Legal
Automation: Job+Mail
Logging: Full

SAP ABAP ALV Grid PDF Upload BCS Mail Background Job

Read the full case study

CASE STUDY / INTERCOMPANY RECONCILIATION

          INTERCOMPANY RECONCILIATION & CONTROL REPORT
        
SUBCONTRACTING BLOCK
EXPORT BLOCK
SETTLEMENT BLOCK
#
Dlv · Batch · Invoice · E-Inv · Amt
Dlv · Customer · Invoice · FOB · Total
Invoice · E-Inv · FOB Unit · Total
1
8000045 · MT240312A · 9010042311 · EFT-0831 · 28.160
8000098 · 501277 · 9010048820 · 28.160 · 29.360
9010051144 · EFT-1102 · 11,73 · 28.160
2
8000046 · MT240319B · 9010042488 · EFT-0847 · 23.125
8000099 · 501285 · 9010048975 · 23.125 · 23.125
9010051220 · EFT-1118 · 12,50 · 23.125
3
8000047 · MT240401C · 9010042699 · pending · 37.820
8000101 · 501292 · 9010049201 · 37.820 · 39.890
— · — · — · OPEN

          ■ Subcontracting
          ■ Export
          ■ Settlement
          ■ Open / Exception
        

SAP GUI · Three-block reconciliation ALV (illustrative)

// SAP SD/FI · ABAP · INTERCOMPANY · E-FATURA · PRICING · MENDERES (AKÇA HOLDING)

Intercompany Reconciliation & Control Application.

SAP SD/FI intercompany reconciliation report developed to control the full document chain between OA subcontracting, OA export and Menderes settlement flows. The solution matches subcontracting deliveries with export deliveries using batch and material information, links billing and accounting documents, retrieves e-invoice data, reads pricing conditions and calculates FOB values. A separate manual entry screen handles exception records that cannot be matched automatically.

Flows: 3-way
Matching: Batch/Mat
Programs: 2

SAP ABAP ALV Grid E-Fatura SD / FI Pricing Conditions FOB Calculation Intercompany

Read the full case study

CASE STUDY / ENTERPRISE IT PLATFORM

          
          IT ASSET MANAGEMENT — OPERATIONS OVERVIEW
        
Total Assets
847
Registered
Active
712
Assigned
License Alerts
7
Expiring soon
SSL / Domain
5
Alerts active
Device Registry
Ownership Tracking
License Management
Network Inventory
Sample data — illustrative dashboard mockup

Angular · Enterprise operations overview dashboard

// ANGULAR · SPRING BOOT · MS SQL SERVER · JASPERREPORTS · MENDERES TEKSTİL

Enterprise IT Asset Lifecycle Platform.

A full-stack internal platform that centralizes IT asset tracking, device ownership, lifecycle management, license monitoring, SSL/domain expiration alerts, supplier records, network inventory, and document-backed assignment workflows — replacing scattered Excel files with a structured, auditable, enterprise-grade governance system.

Modules: 8
Stack: Full-Stack
Output: PDF + Mail

Angular Spring Boot MS SQL Server JasperReports Asset Lifecycle Notifications

Read the full case study

// ENHANCEMENTS & SUPPORT

The everyday work.

Smaller, focused deliverables that keep enterprise processes moving — selection-screen extensions, custom fields, ALV tuning and integration glue. Card summaries; no deep-dive page needed.

// CARD-ONLY

/ 01 Enhancement

Selection-screen extensions

Added new selection parameters and select-options to standard and custom reports so business users could filter by the dimensions that actually matter to their process — without leaving the familiar screen.

ABAP Selection Screen

/ 02 Enhancement

Custom field additions

Extended standard structures with append fields and surfaced them across transactions, reports and prints — capturing the extra business data the process needed while staying upgrade-safe.

Append Structure DDIC

/ 03 Reporting

ALV report tuning

Built and refined ALV Grid outputs — totals, subtotals, traffic-light status, field catalogs and layout variants — so each report read clearly and let users drill into the data on their own.

ALV Grid Field Catalog

/ 04 Integration

Excel ↔ SAP data loaders

Upload programs that read structured Excel files into SAP tables with validation and logging — replacing manual entry and giving downstream reports a single, reliable source of data.

ABAP Excel Upload

/ 05 Enhancement

Background jobs & updates

Scheduled update programs that refresh and reconcile data on a recurring basis — keeping planning datasets current without anyone having to remember to run them by hand.

Batch Job Background

/ 06 Support

Production support & fixes

Day-to-day troubleshooting across SAP modules — analyzing incidents, debugging custom code and shipping corrections that unblock users and keep critical business processes available.

Debugging Maintenance

// TECH INDEX

What I worked with.

Work	Type	Stack & techniques
Osman Akça Shipment & Logistics Analytics	Case Study	ABAP · Fiori / UI5 · OData / CDS · Java · Spring Boot · Azure AI · Dashboards
Osman Akça Sales & FOB Analysis Report	Case Study	ABAP · ALV Grid · Pricing Conditions · FOB Calculation · Currency Conversion · Delivery Tracking · Authorization Control
Osman Akça Delivery & E-Document Tracking Report	Case Study	ABAP · SALV Grid · LIKP/LIPS · E-İrsaliye · E-Fatura · Shipment/Carrier · Batch Tracking
Osman Akça Invoice & Export Documentation Report	Case Study	ABAP · CDS Views · E-Fatura · E-İrsaliye · Export / Customs · GTİP · CIF/FOB · Due Date · Document Flow Nav
Export Logistics Data Report	Case Study	ABAP · ALV Grid · LIKP/LIPS · VTTK/VTTP · Shipment · Ports & Routes · Incoterms · Product Classification
Price-Restricted Invoice Report	Case Study	ABAP · ALV Grid · Authorization Control · E-Fatura · Export · Role-Based Visibility · User Auth Table
Annual Revenue Planning & Tracking	Case Study	ABAP · Editable ALV · CL_GUI_ALV_GRID · Revenue Calc · USD Conversion · F4 Help · Auth Object · Audit Log
IKEA Shipment Documentation & Invoice Flow Report	Case Study	ABAP · CDS Views · E-Fatura · E-İrsaliye · Export / GTİP · IKEA Product Identity · Packaging · ALV Variants
IKEA Forecast Analysis Report (SPI)	Case Study	ABAP · ALV Grid · Dynamic Tables · Charts · Excel Upload
Quality Management Analytics (QM + Power BI)	Case Study	ABAP CDS · OData · Power BI · SAP QM · Dashboards
Finishing Quality Performance Report	Case Study	ABAP · OOP / Singleton · ALV Grid · SAP QM · Quality Analytics · Defect Classification
Terbiye Production Flow Cockpit	Case Study	ABAP · CDS View Entities · ALV Grid · Fiori / UI5 · SAP PP · S/4HANA · Analytical Query · UI Annotations · OOP · 15 min → 8 sec
Power of Attorney Lifecycle Management	Case Study	ABAP · ALV Grid · PDF Upload · HTML Viewer · BCS Mail · Background Job · Operation Logging
Selection-screen extensions	Enhancement	ABAP · Selection Screen · Select-Options
Custom field additions	Enhancement	Append Structure · DDIC · Enhancement Framework
ALV report tuning	Reporting	ALV Grid · Field Catalog · Layout Variants
Excel ↔ SAP data loaders	Integration	ABAP · Excel Upload · Validation & Logging
Background jobs & updates	Enhancement	Batch Job · Background Processing · Scheduling
Production support & fixes	Support	Debugging · Maintenance · Incident Analysis