BP
endetr
Data AnalystData ScientistBI AnalystBonn, Germany

Berke Pehlivan

Data Analyst with economics, product analytics, and business intelligence background.

Bonn-based M.Sc. Economics student and Product Analytics working student focused on SQL, Python, BI dashboards, CRO, forecasting, customer analysis, and business decision support.

Download ResumeView ProjectsLinkedInGitHub

5

professional roles

3

target roles

2

portfolio projects

DE

Germany-based

Revenue

€39K

Margin

28%

Risk

Score

ARisk band
BBBRisk band
BBRisk band
BRisk band
SQL
Python
Power BI

Target roles

Data Analyst · Data Scientist · BI Analyst

Location

Bonn, Germany

Core stack

SQL · Python · ML · Power BI · PostgreSQL · A/B Testing

Strength

Business-focused analytics and reporting

About

Business context, technical execution, clear reporting.

A concise profile for analytics, BI, product analytics, and business decision-support roles.

I am Berke Pehlivan, an economics-trained data analyst based in Bonn, Germany. I am pursuing an M.Sc. in Economics at the University of Bonn while working part-time in Product Analytics at Redcare Pharmacy.

My work sits at the intersection of data, business performance, and product decision-making. I have experience analyzing customer behavior, A/B test results, onsite growth metrics, retail KPIs, financial reports, and operational data.

I am especially interested in Data Analyst, Business Analyst, and junior Data Scientist roles where I can use SQL, Python, BI tools, forecasting, customer analysis, and KPI reporting to support better decisions.

Machine LearningBusiness IntelligenceProduct AnalyticsCROForecastingData Visualization

Based in Bonn, Germany

M.Sc. Economics, University of Bonn

Product Analytics at Redcare Pharmacy

Focus: ML, BI, CRO, Forecasting, Reporting

Featured Proof

What this portfolio demonstrates.

The site is built to show both practical business analytics and technical execution, with RetailPulse as the flagship proof point.

End-to-end analytics workflow design

Dashboard-ready reporting outputs

Forecasting and customer segmentation

Product analytics and A/B testing experience

Business-facing reporting communication

Data quality and pipeline reliability thinking

Target Roles

Clear fit for analytics teams in Germany.

The portfolio is positioned around practical business analytics, BI, product insight, and applied data science.

Data Analyst

SQL, Python, dashboards, reporting, and business data analysis.

Data Scientist

Forecasting, segmentation, classification, and model evaluation.

BI Analyst

Power BI, Tableau, KPI dashboards, and recurring business reporting.

Business Analyst

Requirements, stakeholder reporting, KPI logic, and decision support.

Product Analyst

A/B testing, CRO, funnel analysis, and product performance insights.

Growth / CRO Analyst

Experimentation, customer journeys, conversion insights, and onsite growth.

Experience

From product analytics to retail and financial controlling.

My experience is presented as business contexts, not just job titles: product decisions, onsite growth, operational reporting, and financial performance.

12/2025 - Present

Student, Product Analytics | Part Time

Redcare Pharmacy

Cologne, Germany

Supporting product, onsite growth, and business teams with cleaner recurring analytics and more structured KPI visibility.

  • Analyzed product, web, and customer behavior data for data-driven decisions.
  • Maintained Power BI dashboards for product, funnel, conversion, and performance metrics.
  • Automated recurring Excel-based analyses, including zoning and performance reports.
  • Evaluated A/B test and experiment performance to identify opportunities for user experience and conversion improvements.
Power BIExcelProduct AnalyticsFunnel AnalysisA/B Testing

04/2025 - 12/2025

Student, Onsite Growth, CRO | Part Time

Redcare Pharmacy

Cologne, Germany

Worked with experimentation and behavioral analytics to support better onsite decisions and product team prioritization.

  • Interpreted and visualized A/B test results using Optimizely.
  • Analyzed user behavior and customer journey insights in Contentsquare.
  • Supported prioritization, setup, launch, and monitoring of A/B experiments.
OptimizelyContentsquareCROA/B TestingUser Behavior

11/2022 - 04/2024

Retail Supervisor | Full Time

Pattison Food Group / Nesters Market

Vancouver, Canada

Connected day-to-day retail operations with performance tracking, dashboarding, and practical business insight.

  • Monitored sales, cost, and operational KPIs using Power BI and Excel.
  • Analyzed purchasing behavior and promotional performance to identify sales and placement opportunities.
  • Created Excel dashboards and SQL-based reports for sales trends, vendor activity, and performance insights.
Power BIExcelSQLRetail KPIsOperational Reporting

06/2022 - 10/2022

Financial Control Specialist | Full Time

SOCAR / Millenicom

Istanbul, Turkey

Built financial discipline through reporting accuracy, variance analysis, monthly closing support, and budget alignment.

  • Conducted actual-versus-budget variance analysis and translated findings into business insights.
  • Prepared monthly and annual IFRS and non-IFRS financial reports for group-level performance reporting.
  • Supported monthly closing in SAP by reviewing financial data and recommending corrective adjustments.
SAPExcelIFRS ReportingBudgetingVariance Analysis

07/2021 - 06/2022

Financial Control Assistant Specialist | Intern

SOCAR / Millenicom

Istanbul, Turkey

Supported financial control and management reporting by preparing performance dashboards, monitoring transaction workflows, and connecting finance data with business decisions.

  • Prepared and analyzed financial statements, P&L reports, and KPI dashboards for monthly performance tracking.
  • Monitored invoice approval workflows and accounts payable/receivable data to improve transaction accuracy and reporting efficiency.
  • Tracked key business metrics, including subscriber acquisition costs, payment flows, and contract-related processes.
  • Collaborated with finance and marketing teams to support campaign performance evaluation and budget allocation decisions.
ExcelSAPP&L ReportingKPI DashboardsFinancial Analysis

Projects

Business-oriented analytics project portfolio.

Project work is presented around business context, analytics workflow, tools, and decision value. Every project is kept honest: portfolio simulations are described as simulations, and work-in-progress projects are marked clearly.

Revenue

39K

Risk

Score

Segments

4

Validate1
Load2
Forecast3
Export4

End-to-end analytics project

RetailPulse

E-commerce teams need reliable monthly data, clean KPI reporting, revenue forecasts, customer segments, and inactivity risk signals to support better business decisions.

Business value

This is presented honestly as a portfolio simulation. It demonstrates how I structure analytics work from raw data to business-ready outputs.

What I built

Recurring business data validation workflow
Clean PostgreSQL loading structure
Business KPI outputs
Revenue forecasting layer
Customer segmentation
Customer inactivity risk prediction
PythonPostgreSQLSQLPandasForecastingCustomer segmentationMachine learning
GitHubCase Study

Control

3.8%

Variant

4.2%

Lift

+0.4pp

Baseline

→

Treatment

Experimentation analytics project

Temporary project card

Conversion Uplift Experimentation Project

Product and growth teams need to understand whether an experiment actually improves conversion behavior and whether the result is strong enough to support a decision.

Business value

This project is included as a temporary work-in-progress card. The portfolio presents it carefully until the GitHub project is updated and finalized.

What I built

Experiment-focused analysis structure
Conversion uplift interpretation
Treatment versus control comparison
Decision-oriented summary outputs
Business value framing for CRO teams
Reusable project structure for future updates
PythonPandasExperimentationA/B testingConversion analysisBusiness reporting
GitHub

Skills

A practical stack for analytics, BI, and business decision support.

Technical Skills

PythonRSQLMySQLPostgreSQLNumPyPandasMatplotlibSeabornscikit-learn

Analytics & Data Science

RegressionClassificationClusteringModel evaluationRevenue forecastingTime series analysisCustomer segmentation

BI & Visualization

Power BITableauExcel dashboardsKPI reportingDashboard-ready outputs

Product & Web Analytics

OptimizelyContentsquareEcondaFullStoryA/B testingCROFunnel analysis

Business & Tools

EconomicsFinancial controllingRetail analyticsSAPQuickBooksJiraFigmaGitHub

Languages

Turkish: NativeEnglish: AdvancedGerman: Intermediate

Certifications

Compact proof of analytics learning.

Selected certificates are shown as skill badges to support the portfolio without making the page feel certificate-heavy.

SQL

SQL for Data Science

edX

Analytics

Professional Data Analyst

DataCamp

Python

Python for Data Science & ML Bootcamp

Udemy

Forecasting

Time Series Analysis in Python

Udemy

R

Time Series Analysis in R

DataCamp

Business

McKinsey Forward Program

McKinsey & Company

Education & Languages

Economics foundation with multilingual communication.

Academic training in economics and business administration, aligned with analytics and stakeholder reporting roles.

M.Sc. Economics

University of Bonn

Bonn, Germany / 10/2024 - Present

Diploma, Business Administration

ILAC International College

Vancouver, Canada / 10/2022 - 10/2023

B.A. Economics in English

Istanbul University

Istanbul, Turkey / 08/2017 - 06/2022

Languages

TurkishNative / C2
EnglishAdvanced / C1
GermanIntermediate / B1

Contact

Open to Data Analyst, Business Analyst, and Junior Data Scientist roles.

I am looking for opportunities where I can combine technical analytics with business understanding, improve reporting quality, and support better decisions.

EmailLinkedInGitHubResume
berke.pehli@gmail.com
linkedin.com/in/berkepehlivan

Runs

12/mo

Checks

8

Issues

2

Extract

1

Validate

2

Publish

3