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ernstdaiane/README.md

Hi, I'm Daiane 👋

Project Management | Business Analysis | Data Analytics

I'm an Project Management professional with experience working on B2B projects across Portugal, Spain, Estonia and the United States.

I enjoy bringing structure to ideas, connecting people and helping teams move projects forward with clarity.

More recently, my curiosity about how data can support better business decisions led me to expand my skills into Data Analytics. Today, I enjoy combining project management, business understanding and data to explore problems, improve processes and communicate insights clearly.

I'm particularly interested in the intersection of people, projects and data, especially within technology, SaaS and international environments.


What I work with

Data Analysis: Python · SQL · pandas · Statistical Analysis · A/B Testing

Business Intelligence: Power BI · Tableau · Excel · Data Visualization · KPI Analysis

Project & Business: Project Management · Stakeholder Management · Business Analysis · Process Improvement · Reporting

Tools: Git · GitHub · Jupyter Notebook · Streamlit


Featured Projects

Analysis of operator performance using business KPIs to identify high-priority cases, operational challenges and opportunities for improvement.

Skills: Python · pandas · KPI Analysis · Data Visualization · Business Analysis


Evaluation of an A/B experiment focused on user behaviour and conversion performance, using statistical testing to support a business recommendation.

Skills: Python · Statistical Analysis · A/B Testing · Business Decision-Making


Interactive web application developed with Streamlit to explore vehicle sales data and understand relationships between mileage, price and other characteristics.

Skills: Python · pandas · Plotly · Streamlit · Exploratory Data Analysis


Customer retention analysis combining predictive modelling and customer segmentation to identify churn risk, understand behavioural patterns and support targeted retention strategies.

Skills: Python · pandas · Machine Learning · Logistic Regression · Customer Segmentation · Business Analysis


SQL analysis of a digital book service exploring catalogue trends, reader ratings, reviews, publishers, authors and customer engagement.

Skills: SQL · PostgreSQL · JOINs · CTEs · Aggregation · Business Analysis


A little more about me

Before expanding into data, I built my career managing international projects and working closely with clients, teams and stakeholders from different countries.

I also studied English Language and Literature at university, and communication has always been an important part of the way I work.

For me, data is most valuable when it helps people understand a problem, make a better decision or move a project forward.


🤝 Let's connect

💼 LinkedIn: www.linkedin.com/in/daianeernst

📍 Lisbon, Portugal

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  1. telecom-operator-performance-analysis telecom-operator-performance-analysis Public

    Business analysis of telecom operator performance using KPIs, sensitivity analysis, statistical testing and Tableau.

    Jupyter Notebook 1

  2. ab-testing-recommendation-system ab-testing-recommendation-system Public

    A/B test analysis of a recommendation system using conversion funnels, statistical testing and business-focused experiment evaluation.

    Jupyter Notebook

  3. book-service-sql-analysis book-service-sql-analysis Public

    SQL business analysis of a digital book service exploring catalogue trends, ratings, reviews, publishers, authors and reader engagement.

    Jupyter Notebook

  4. model-fitness-churn-analysis model-fitness-churn-analysis Public

    Customer churn and retention analysis using predictive modelling, risk scoring and customer segmentation.

    Jupyter Notebook

  5. vehicle-sales-app vehicle-sales-app Public

    Interactive Streamlit application for exploring vehicle sales data, pricing patterns and mileage relationships.

    Jupyter Notebook