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Ebru Yildirim

Ebru Yildirim

Customer Data Analyst

Vodafone | Italy

Technologies

My Portfolio Highlights

My New Course

Introduction to Python

My New Course

Introduction to Python

Cognitive explorer, unraveling the mysteries of human-like AI.

My Work

Take a look at my latest work.

course

Introduction to Python

course

Intermediate Python

article

A/B Testing: We Grow by Learning, and Learn by Testing

TheoryExcel
notebook

Predicting Customer Churn Using Credit Card Analytics

RSQLTheory
course

Introduction to Python

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

Courses

Introduction to Python
Introduction to SQL
Introduction to Power BI
Intermediate SQL

My Work Experience

Where I've interned and worked during my career.

Vodafone Germany | May 2022 - Feb 2025

Customer Data Analyst

- Led the migration from IBM Unica to PEGA, ensuring data consistency, automation, and seamless integration across marketing operations. - Launched multi-channel campaigns using PEGA and CRM data, generating multi-million euros annually through data-driven targeting and agile execution. - Conducted advanced analysis using SQL and Python, applying various data analysis techniques, trend analysis, and data interpretation to support segmentation, performance tracking, and optimization. - Leveraged cloud-based PostgreSQL (GCP/ BigQuery / Oracle Cloud) for campaign monitoring and reporting automation, ensuring smooth data integration across environments. - Collaborated with Product Owners and Campaign Managers on campaign briefings, ad-hoc data requests, and stakeholder management. - Applied A/B testing and statistical models to uncover insights, boosting engagement and conversion rates. - Partnered with Data Engineering on data modeling, data profiling, and governance to build scalable, high-quality infrastructure. - Delivered insights via dashboards (Tableau) and reports (SQL, Python, R), enabling leadership to track KPIs and measure effectiveness.
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Vodafone Turkey | Jun 2021 - Apr 2022

Data & Analytics Lead

- Collaborated with business stakeholders to align analytics initiatives with strategic priorities, delivering actionable insights through agile workflows. - Conducted advanced data analysis using Python, R, and SQL to uncover opportunities across CRM, campaigns, products, sales, channels, and network marketing. - Built and maintained end-to-end dashboards and ad-hoc and CRM reports using Tableau, Power BI, and SAP BO, enabling real-time performance tracking. - Designed and implemented silver layer data models (joins, calculated fields, standardized metrics) and gold layer KPIs for scalable, reliable reporting. - Led dashboard and reporting migration to new data architecture, ensuring alignment with evolving business needs. - Partnered with Data Engineering and Governance teams on ETL processes and implemented Hub-and-Spoke architecture to support governed, self-service analytics. - Presented complex insights to senior management through high-impact visual storytelling and strategic recommendations. - Drove measurable outcomes through A/B testing and data-driven decision support aligned with global telecom trends.

Yapi Kredi Bank (part of UniCredit Group at the time) | Sep 2018 - Jun 2021

Business Intelligence Specialist/Developer

During my tenure, Yapı Kredi was a part of UniCredit Group and Koc Group, and I actively contributed to BI & analytics projects aligned with UniCredit's global standards. - Delivered automated reporting systems and responsive dashboards (Power BI, Qlik Sense, QlikView, R), enabling strategic decision-making and leading migration from Qlik to Power BI. - Built SQL-based data models in silver layer and data marts using star/snowflake schemas, and implemented custom ETL pipelines with data engineering teams to ensure clean, reliable data flows. - Optimized ETL and reporting workflows using SQL and SAS, handling ad-hoc data requests and reducing manual effort for executive-level decision support. - Supported self-service BI across departments by creating certified datasets, defining access models, and standardizing documentation under governance frameworks. - Conducted predictive analytics in Python and R to assess business impact and optimize customer and workforce strategies. - Led BI training and stakeholder enablement, supporting Hub-and-Spoke architecture and increasing analytical maturity across teams. - Supported analytics initiatives across Risk, HR, Marketing, and Digital departments by delivering strategic dashboards and insights aligned with each function’s KPIs.

sahibinden.com | Jul 2017 - Sep 2018

Data Analyst / Data Scientist

- Managed Oracle Bluekai DMP and led all Ad Analytics processes within a digital marketplace environment, owning end-to-end analysis and reporting workflows. - Created ready-to-use target audiences and managed product enhancements as part of the S-Target product, combining segmentation strategy with product ownership responsibilities. - Applied advanced data analysis and data mining using SQL, R, and Google Analytics to enhance campaign performance, reduce churn, and align DMP and CRM strategy with marketing goals. - Performed in-depth analytics on Native Ads data using R for fraud detection, customer segmentation, pricing optimization, and ad text performance analysis, supporting data-driven decision-making. - Led A/B testing initiatives and continuously optimized targeting strategies across digital channels through iterative experimentation and conversions. - Built automated and R-based ad-hoc reports, delivering actionable insights to stakeholders and clearly communicating findings within agile project structures.

Figensoft | Sep 2016 - May 2017

Junior Software Developer/Intern

- Built interactive tools using C#, JavaScript, and HTML/CSS — foundational experience that still supports my technical adaptability in BI/Data roles.

My Education

Take a look at my formal education

Master's degree in Data ScienceUniversità degli Studi di Napoli Federico II | 2023
Certification Program in MarketingTurk Telekom Marketing School | 2018
Bachelor's degree in StatisticsMimar Sinan Fine Arts University | 2017

About Me

Ebru Yildirim

Turning data into business impact — with 8+ yrs in BI, analytics & DS. Skilled in SQL, Python, R, Tableau, Power BI. From prediction to decision, I deliver results. Open to EU or remote roles. Portfolio below.

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