RabiaİnciEryılmaz
Data Analyst | Statistics · SAP & Retail Operations · AI-Powered Analytics & Automation
I read operational data together with the business processes behind it, turning recurring issues, trends and improvement areas into analysis that supports decisions.
About Me
I'm a data analyst with a degree in Statistics. My experience in retail operations and SAP ERP lets me evaluate data not only technically but together with the business processes behind it. I identify recurring issues, trends and improvement areas in operational data and turn them into analysis that supports decision-making. I actively use Python, machine learning and LLM-based tools for data analysis, modeling, automation and prototyping. With AI-assisted development tools such as Claude Code and OpenAI Codex, I turn analysis ideas into working applications, reporting tools and data pipelines.
Experience
IT Operations Specialist
BİM Birleşik Mağazalar A.Ş. (BİM & FİLE)
- Processed SAP help desk records with Python to analyze error density, recurring issues, resolution times and seasonal trends by module, region and user group
- Classified free-text fields such as request descriptions with LLM-based methods to surface issue patterns hard to spot manually; consolidated findings into a comparative, filterable reporting screen
- Provide first-level support across SAP SD, FI, MM and EWM; prioritize and resolve requests, and escalate complex issues to business analysts with root-cause notes
- Findings led to ABAP and module fixes, improved screens, targeted trainings and documentation; help desk requests decreased in several regions
Business Analyst Intern
Koçtaş
- Analyzed stock inconsistencies in SAP ERP and EWM and managed corrective actions, preventing warehouse disruptions and improving inventory accuracy
- Resolved system errors in goods receipt and issue via the ticketing system, keeping operations running without interruption
- Monitored ERP integrations between sellers and carriers, identified disruptions and resolved them with relevant teams, improving delivery continuity
- Analyzed frequently used SAP screens and proposed usability improvements, reducing repeated transaction errors
Data Science Project Intern
Yıldız Technical University
- Supported a research group on an automated housing valuation project aiming to estimate property value without an on-site appraisal
- Cleaned and prepared housing data in Python, compared regression models and presented visualized results to the academic team
Skills
Data Analysis & Statistics
Machine Learning
AI-Powered Development & Automation
SAP & Business Analysis
Visualization & Tools
Languages
Projects
Insurance Quote Acceptance Prediction
2024 – 2025- End-to-end classification study predicting acceptance probability on 19,000+ motor insurance quotes, with separate models for individual and corporate customers
- Optimized Logistic Regression, Random Forest and XGBoost and combined them in an ensemble; reached ROC-AUC 0.76 in the individual segment
- Interpreted how variables such as price sensitivity and renewal behavior relate to quote acceptance from a business perspective
- Published the work as a Streamlit web application
Psychological Effects of Digital Gaming Habits — Bachelor's Thesis
2025- Designed and ran an online survey with 252 participants aged 12–67
- Examined factors related to psychological state using correlation analysis, ANOVA with post-hoc tests, multiple linear regression and clustering
- Yıldız Technical University, Department of Statistics
Breast Cancer Classification
2024- Exploratory data analysis (EDA) on the Breast Cancer dataset
- Applied Logistic Regression, KNN, CART and Random Forest and compared their performance
Spotify API Data Analysis
Dec 2023- Collected data via Spotify API integration
- Structured data in DataFrames and performed exploratory analysis
- Generated popularity insights with visualizations
Certifications
Google · Coursera
Foundations: Data, Data, Everywhere
Aug 2025
SISTERLAB / Ada Lovelace Academy
Data Science Academy
2023 – 2024
DataCamp
Introduction to Python
Aug 2023
Udemy
Algorithm Development and Programming
Feb 2022
Education
Yıldız Technical University
Bachelor's degree, Statistics
2022 – 2025
Yıldız Technical University
Bachelor's degree, Biomedical/Medical Engineering
2019 – 2022